Subjects -> ENVIRONMENTAL STUDIES (Total: 913 journals)
    - ENVIRONMENTAL STUDIES (810 journals)
    - POLLUTION (31 journals)
    - TOXICOLOGY AND ENVIRONMENTAL SAFETY (54 journals)
    - WASTE MANAGEMENT (18 journals)

ENVIRONMENTAL STUDIES (810 journals)            First | 1 2 3 4 5     

Showing 201 - 378 of 378 Journals sorted alphabetically
Energy and Environment Research     Open Access   (Followers: 13)
Energy and Environmental Engineering     Open Access   (Followers: 5)
Energy, Ecology and Environment     Hybrid Journal  
Entrepreneurship and Sustainability Issues     Open Access  
EnviroLab Asia     Open Access  
Environment & Ecosystem Science     Open Access   (Followers: 2)
Environment and Behavior     Hybrid Journal   (Followers: 24)
Environment and Development Economics     Hybrid Journal   (Followers: 43)
Environment and Ecology Research     Open Access   (Followers: 9)
Environment and Natural Resources Research     Open Access   (Followers: 5)
Environment and Planning A : Economy and Space     Full-text available via subscription   (Followers: 57)
Environment and Planning B : Urban Analytics and City Science     Full-text available via subscription   (Followers: 39)
Environment and Planning C : Politics and Space     Full-text available via subscription   (Followers: 45)
Environment and Planning D : Society and Space     Full-text available via subscription   (Followers: 76)
Environment and Planning E : Nature and Space     Hybrid Journal   (Followers: 4)
Environment and Pollution     Open Access   (Followers: 10)
Environment and Society     Open Access   (Followers: 9)
Environment Conservation Journal     Open Access   (Followers: 6)
Environment International     Hybrid Journal   (Followers: 15)
Environment Systems & Decisions     Hybrid Journal   (Followers: 1)
Environment, Development and Sustainability     Hybrid Journal   (Followers: 39)
Environment, Space, Place     Full-text available via subscription   (Followers: 9)
Environment: Science and Policy for Sustainable Development     Hybrid Journal   (Followers: 40)
Environmental & Engineering Geoscience     Full-text available via subscription   (Followers: 5)
Environmental & Socio-economic Studies     Open Access   (Followers: 1)
Environmental Advances     Open Access  
Environmental and Climate Technologies     Open Access   (Followers: 3)
Environmental and Molecular Mutagenesis     Hybrid Journal   (Followers: 4)
Environmental and Sustainability Indicators     Open Access   (Followers: 6)
Environmental and Water Sciences, public Health and Territorial Intelligence Journal     Open Access   (Followers: 2)
Environmental Bioindicators     Hybrid Journal   (Followers: 2)
Environmental Challenges     Open Access   (Followers: 1)
Environmental Chemistry     Hybrid Journal   (Followers: 9)
Environmental Chemistry and Ecotoxicology     Open Access  
Environmental Chemistry Letters     Hybrid Journal   (Followers: 4)
Environmental Claims Journal     Hybrid Journal   (Followers: 1)
Environmental Communication: A Journal of Nature and Culture     Hybrid Journal   (Followers: 16)
Environmental Development     Hybrid Journal   (Followers: 3)
Environmental Disease     Open Access   (Followers: 3)
Environmental DNA     Open Access   (Followers: 1)
Environmental Economics     Open Access   (Followers: 3)
Environmental Education Research     Hybrid Journal   (Followers: 16)
Environmental Engineering Science     Hybrid Journal   (Followers: 9)
Environmental Ethics     Hybrid Journal   (Followers: 12)
Environmental Evidence     Open Access   (Followers: 1)
Environmental Fluid Mechanics     Hybrid Journal   (Followers: 11)
Environmental Forensics     Hybrid Journal  
Environmental Geosciences     Full-text available via subscription   (Followers: 6)
Environmental Geotechnics     Hybrid Journal   (Followers: 6)
Environmental Hazards     Hybrid Journal   (Followers: 3)
Environmental Health     Open Access   (Followers: 12)
Environmental Health Insights     Open Access   (Followers: 5)
Environmental History     Hybrid Journal   (Followers: 29)
Environmental Impact Assessment Review     Hybrid Journal   (Followers: 22)
Environmental Innovation and Societal Transitions     Hybrid Journal   (Followers: 9)
Environmental Justice     Hybrid Journal   (Followers: 12)
Environmental Law Review     Full-text available via subscription   (Followers: 23)
Environmental Management     Open Access   (Followers: 54)
Environmental Management and Sustainable Development     Open Access   (Followers: 9)
Environmental Microbiology Reports     Hybrid Journal   (Followers: 9)
Environmental Modeling & Assessment     Hybrid Journal   (Followers: 18)
Environmental Modelling & Software     Hybrid Journal   (Followers: 35)
Environmental Monitoring and Assessment     Hybrid Journal   (Followers: 39)
Environmental Nanotechnology, Monitoring and Management     Open Access   (Followers: 1)
Environmental Policy and Governance     Hybrid Journal   (Followers: 16)
Environmental Pollutants and Bioavailability     Open Access  
Environmental Pollution     Hybrid Journal   (Followers: 26)
Environmental Processes : An International Journal     Hybrid Journal  
Environmental Research     Hybrid Journal   (Followers: 11)
Environmental Science & Policy     Hybrid Journal   (Followers: 19)
Environmental Science & Technology     Hybrid Journal   (Followers: 191)
Environmental Science & Technology Letters     Hybrid Journal   (Followers: 8)
Environmental Science : Atmospheres     Open Access   (Followers: 1)
Environmental Science : Water Research & Technology     Hybrid Journal   (Followers: 8)
Environmental Science and Ecotechnology     Open Access   (Followers: 4)
Environmental Science and Pollution Research     Hybrid Journal   (Followers: 11)
Environmental Science and Sustainable Development : International Journal Of Environmental Science & Sustainable Development     Open Access   (Followers: 12)
Environmental Science: Advances     Open Access   (Followers: 3)
Environmental Sciences     Hybrid Journal   (Followers: 5)
Environmental Sciences Europe     Open Access   (Followers: 2)
Environmental Skeptics and Critics     Open Access  
Environmental Smoke     Open Access  
Environmental Sociology     Hybrid Journal   (Followers: 2)
Environmental Sustainability     Hybrid Journal   (Followers: 1)
Environmental Systems Research     Open Access   (Followers: 2)
Environmental Technology     Hybrid Journal   (Followers: 2)
Environmental Technology & Innovation     Full-text available via subscription  
Environmental Technology Reviews     Hybrid Journal  
Environmental Toxicology     Hybrid Journal   (Followers: 11)
Environmental Toxicology & Chemistry     Hybrid Journal   (Followers: 22)
Environmental Toxicology and Pharmacology     Hybrid Journal   (Followers: 9)
Environmental Values     Full-text available via subscription   (Followers: 10)
Environments     Open Access  
Erwerbs-Obstbau     Hybrid Journal  
eScience     Open Access   (Followers: 2)
Estuaries and Coasts     Hybrid Journal   (Followers: 23)
Ethics & the Environment     Full-text available via subscription   (Followers: 7)
Ethics in Science and Environmental Politics     Hybrid Journal   (Followers: 5)
Ethics, Policy & Environment     Hybrid Journal   (Followers: 11)
Ethiopian Journal of Environmental Studies and Management     Open Access   (Followers: 3)
Études caribéennes     Open Access   (Followers: 1)
Euro-Mediterranean Journal for Environmental Integration     Hybrid Journal  
European Energy and Environmental Law Review     Full-text available via subscription   (Followers: 14)
European Environment: The Journal of European Environmental Policy     Hybrid Journal   (Followers: 5)
European Journal of Ecology     Open Access   (Followers: 1)
European Journal of Environmental and Civil Engineering     Hybrid Journal   (Followers: 5)
European Journal of Environmental Sciences     Open Access   (Followers: 1)
European Spatial Research and Policy     Open Access   (Followers: 9)
Evolutionary Ecology     Hybrid Journal   (Followers: 25)
Expert Opinion on Environmental Biology     Hybrid Journal  
Exposure and Health     Hybrid Journal  
Facta Universitatis, Series : Working and Living Environmental Protection     Open Access   (Followers: 1)
FIGEMPA : Investigación y Desarrollo     Open Access   (Followers: 1)
Fire Ecology     Open Access   (Followers: 2)
Food and Chemical Toxicology     Hybrid Journal   (Followers: 18)
Food and Ecological Systems Modelling Journal     Open Access  
Food and Environment Safety     Open Access   (Followers: 3)
Fordham Environmental Law Review     Open Access   (Followers: 4)
Forest Ecology and Management     Hybrid Journal   (Followers: 61)
Foresta Veracruzana     Open Access  
Forestry Chronicle     Full-text available via subscription   (Followers: 9)
Freshwater Biology     Hybrid Journal   (Followers: 32)
Fronteiras : Journal of Social, Technological and Environmental Science     Open Access  
Frontier of Environmental Science     Open Access   (Followers: 2)
Frontiers in Climate     Open Access   (Followers: 4)
Frontiers in Ecology and the Environment     Hybrid Journal   (Followers: 72)
Frontiers in Environmental Science     Open Access   (Followers: 1)
Frontiers in Water     Open Access  
Frontiers of Environmental Science & Engineering     Hybrid Journal   (Followers: 3)
Future Cities and Environment     Open Access   (Followers: 6)
FUTY Journal of the Environment     Full-text available via subscription  
Geo : Geography and Environment     Open Access   (Followers: 7)
Geo-Image     Open Access   (Followers: 1)
Geoacta     Open Access   (Followers: 2)
Geochemical Transactions     Open Access   (Followers: 2)
Geochronometria     Open Access   (Followers: 1)
Geoenvironmental Disasters     Open Access   (Followers: 3)
Geoforum     Hybrid Journal   (Followers: 25)
GeoHealth     Open Access  
Geology, Geophysics and Environment     Open Access   (Followers: 2)
Géomorphologie : relief, processus, environnement     Open Access   (Followers: 1)
GeoScience Engineering     Open Access  
Geospatial Health     Open Access   (Followers: 1)
Geosystems and Geoenvironment     Open Access  
Global Challenges     Open Access  
Global Environment     Full-text available via subscription   (Followers: 1)
Global Environmental Change     Hybrid Journal   (Followers: 45)
Global Journal of Environmental Science and Management     Open Access   (Followers: 6)
Global Journal of Environmental Sciences     Full-text available via subscription  
Global Sustainability     Open Access   (Followers: 3)
Golden Gate University Environmental Law Journal     Open Access   (Followers: 3)
Grassland Science     Hybrid Journal  
Green Energy & Environment     Open Access   (Followers: 2)
Greenhouse Gas Measurement and Management     Hybrid Journal  
Groundwater for Sustainable Development     Full-text available via subscription   (Followers: 5)
Harvard Environmental Law Review     Free   (Followers: 13)
Health Services Management Research     Hybrid Journal   (Followers: 16)
Health, Safety and Environment     Open Access   (Followers: 34)
Hereditas     Open Access   (Followers: 1)
Hidrobiológica     Open Access  
Historia Ambiental Latinoamericana y Caribeña     Open Access   (Followers: 2)
História, Natureza e Espaço - Revista Eletrônica do Grupo de Pesquisa NIESBF     Open Access  
Home Health Care Management & Practice     Hybrid Journal   (Followers: 1)
Horticulture, Environment, and Biotechnology     Hybrid Journal   (Followers: 11)
Human & Experimental Toxicology     Hybrid Journal   (Followers: 8)
Human Ecology     Open Access   (Followers: 24)
Hydrology: Current Research     Open Access   (Followers: 9)
Ideas in Ecology and Evolution     Open Access   (Followers: 9)
IMA Journal of Management Mathematics     Hybrid Journal   (Followers: 1)
Indonesian Green Technology Journal     Open Access  
Indonesian Journal of Conservation     Open Access  
Indonesian Journal of Sustainability Accounting and Management     Open Access  
Indoor Air     Hybrid Journal   (Followers: 2)
Information Systems Management     Hybrid Journal   (Followers: 10)
Informs Journal on Applied Analytics:     Full-text available via subscription   (Followers: 15)
Ingeniería Hidráulica y Ambiental     Open Access  
Inhalation Toxicology     Hybrid Journal   (Followers: 8)
Innovative Infrastructure Solutions     Hybrid Journal  
Integrated Environmental Assessment and Management     Hybrid Journal   (Followers: 8)
Interdisciplinary Environmental Review     Hybrid Journal   (Followers: 3)
International Aquatic Research     Open Access   (Followers: 4)
International Archives of Occupational and Environmental Health     Hybrid Journal   (Followers: 7)
International Electronic Journal of Environmental Education     Open Access   (Followers: 1)
International Environmental Agreements: Politics, Law and Economics     Hybrid Journal   (Followers: 14)
International Journal of Acarology     Hybrid Journal   (Followers: 1)
International Journal of Agricultural and Environmental Information Systems     Full-text available via subscription   (Followers: 1)
International Journal of Alternative Propulsion     Hybrid Journal   (Followers: 23)
International Journal of Applied Earth Observations and Geoinformation     Open Access   (Followers: 1)
International Journal of Corrosion     Open Access   (Followers: 10)
International Journal of Critical Infrastructures     Hybrid Journal   (Followers: 2)
International Journal of Disaster Risk Reduction     Hybrid Journal   (Followers: 18)
International Journal of Disaster Risk Science     Open Access   (Followers: 14)
International Journal of Ecological Economics and Statistics     Full-text available via subscription   (Followers: 5)
International Journal of Ecology & Development     Full-text available via subscription   (Followers: 2)
International Journal of Energy and Environmental Engineering     Open Access   (Followers: 3)
International Journal of Energy and Water Resources     Hybrid Journal  
International Journal of Environment     Open Access   (Followers: 3)
International Journal of Environment and Climate Change     Open Access   (Followers: 22)
International Journal of Environment and Geoinformatics     Open Access   (Followers: 4)
International Journal of Environment and Health     Hybrid Journal   (Followers: 5)

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Journal Cover
Euro-Mediterranean Journal for Environmental Integration
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 2365-6433 - ISSN (Online) 2365-7448
Published by Springer-Verlag Homepage  [2469 journals]
  • Fluid overpressure assessment in the Berkine basin and its consequences
           for wellbore stability and water table contamination

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      Abstract: Abstract Several water contamination accidents have been reported in the Kebili, Nefta and Hassi Messaoud regions situated in the Saharan Platform. Two major ecological disasters in Jemna and Hassi Berkaoui, which are parts of the same region, were investigated and well documented. In this work, an evaluation of water contamination risks was conducted, taking into account the pore pressure profile. The objectives were firstly to identify the potential overpressure dangers, and then to propose adequate solutions or recommendations to reduce the accident risks. The formation pressure profile in the Berkine basin was characterized by calculation and modelling methods based on logging data and drilling parameters. The used software computed the pore pressure using the d-exponent and sonic Eaton's method. Also, accurate local formation pressure surveys were used to calibrate and validate the results achieved at different control points. As a result, five overpressure intervals in the Berkine basin were highlighted that affect the wellbore stability and cause a potential risk of reservoir fluid exchange. The overpressure intervals are hosted in evaporite series of the Late Cretaceous, Early Jurassic–Late Triassic and Devonian intervals. It was concluded that the environmentally sensitive water tables in the Berkine basin are the Complex Terminal hosted in Tertiary sands to Senonian carbonates and the Continental Intercalaire aquifer hosted in Barremian and Albian sandstones. Both water tables are widely used in Saharan oases, contain good-quality water resources and have different pressure amplitudes. Nevertheless, pore pressure studies confirm that these aquifers exhibit a risk of high contamination by oil exploration activities. Based on the resulting pressure profile and the actual wellbore weak points, the source of danger was identified and a new well architecture and exhaustive cement bond evaluation were recommended for sustainable water-table protection and wellbore integrity.
      PubDate: 2022-06-09
       
  • Physicochemical and microbiological properties and moisture adsorption
           

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      Abstract: Rebaudioside A is one of the major sweet components found in stevia. The great importance of rebaudioside A in the sweeteners market requires that its physicochemical and microbiological qualities are studied. Therefore, this work aimed to evaluate the microbiological and physical-chemical parameters of commercial rebaudioside A. Its moisture and ash contents and its pH were determined, and the results showed that the commercial sample met the standard established by JECFA. Moreover, the microbiological results indicated that there was no microbiological contamination. Beside this, the mineral and phenolic contents were determined; the total phenolic content was found to be 2.78 ± 0.431 mg GAE/g, and the mineral composition results showed that different minerals (Ca, K, P, and S) were present in the sweetener sample. Furthermore, moisture adsorption isotherms were evaluated in this work at 30 and 40 °C using a gravimetric technique, given that sorption isotherms data are a key tool for predicting the commercial and optimum storage conditions required for ensuring the quality of rebaudioside A. The sorption isotherms were found to be of type III, with the sorption capacity decreasing with increasing temperature. Experimental data were fitted using the GAB model, and the monolayer moisture content and surface area tended to decrease as the temperature increased. Results indicated that commercial rebaudioside A is stable due to no adsorption of moisture up to a water activity value of 0.85. Graphical abstract
      PubDate: 2022-05-31
       
  • Effect of waste concrete on the compressibility of clay from the Bouhanak
           region (Algeria)

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      Abstract: Abstract The disposal and management of waste resulting from construction, renovation, and demolition activities is one of the thorny problems that are prevalent in urban and rural areas of many developed and emerging countries around the world. The protection of the environment and natural resources currently represent a major socio-economic issue for geo-environmental specialists. In Algeria, one of the main objectives of protecting the environment and the ecosystem is to efficiently and effectively recycle waste from the construction industry. The recovery of construction and demolition waste (C&D) is essential and constitutes a path towards sustainable development. From this perspective, our work aims to valorize concrete waste by using it to improve the behavior of compressible soil in the Bouhanak–Tlemcen region (in the northwest of Algeria). Experimental compressibility (oedometric) tests were carried out on soil incorporating 10%, 15%, and 20% concrete waste by dry weight of the natural sample. The results showed good compressible soil response, while the impact of waste concrete is reduced.
      PubDate: 2022-05-24
       
  • Sintering and mechanical properties of biomaterials based on the
           tricalcium phosphate and magnesium fluoride

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      Abstract: Abstract The sintering and the mechanical properties of tricalcium phosphate–magnesium fluoride composites have been investigated. The rupture strengths of the samples were studied using the Brazilian test. This property increased with both the sintering temperature and magnesium fluoride addition. The maximum mechanical strength of the composites, 9 MPa, was reached at 1300 °C. The highest performance was obtained for the tricalcium phosphate containing 7.5 wt% MgF2. This amelioration of performance is due to the presence of a liquid phase between the tricalcium phosphate and magnesium fluoride and the formation of a new compound. In fact, the value of the rupture strength is close to that of enamel (8–12 MPa). X-ray diffraction analysis of the composites revealed the presence of magnesium phosphate and fluorapatite. The IR spectra showed that most bands are associated with the phosphate group of tricalcium phosphate. The microstructure of the composites shows a new needle form, which is probably related to the new phases.
      PubDate: 2022-05-18
       
  • Holistic hydrological approach to the fire event on August 2021 in Evia,
           Greece

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      Abstract: Abstract The impact of forest fires on the exposure of humans, properties, the environment, and the economy to flooding is of the utmost importance. This research paper proposes a holistic approach to specific fire events based on flood-susceptibility assessment, investigation of hydrological changes at the basin scale, and flood mapping of susceptible areas. The study area consists of two main river basins in the north of Evia Island, located in Greece, which suffered a devastating 8-day fire in August 2021. The multi-criteria decision analysis (MCDA) method is initially used for flood-susceptibility determination using a geographic information system (GIS). Also, the time–area (TA) diagram method is implemented in the GIS for unit hydrograph (UH) determination, which allows the calculation of the flood hydrographs (utilizing the Hydrological Engineering Center’s Hydrological Modeling System, HEC-HMS) at the outlets of five subbasins belonging to the above two basins for both pre- and post-fire events. The third step in the approach concerns flood mapping of the outlets of the subbasins using the River Analysis System (HEC-RAS) software. The results from the HEC-HMS show that fire has a significant impact on the hydrological responses of basins, since it increases their imperviousness, increasing the peak discharge and reducing the time to peak during a rainfall event. Moreover, according to the floodplain maps, a large portion of the agricultural activity, country roads, and infrastructure are flooded. In general, the proposed approach provides necessary and useful findings for fire-affected areas, which can be exploited by decision makers to prevent human losses, ecological costs, and economic losses and to achieve environmental integration.
      PubDate: 2022-05-17
       
  • Elaboration of low-cost ceramic membranes using aluminum alloy 6063:
           application for membrane filtration

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      Abstract: Abstract This study focused on the development of low-cost membranes in flat and tubular configurations, which were prepared from mixtures of kaolin, feldspar, sand, and aluminum alloy 6063 as novel supports for membrane filtration. Flat configurations were produced by dry pressing, whereas tubular configurations were obtained by an extrusion method. A comparison was made between supports of the same composition obtained by pressing and by extrusion in terms of microstructure and properties. Results showed that the addition of metal to the porcelain matrix has a positive effect on the cermet properties. Moreover, the mechanical strength either increases or decreases gradually in the presence of aluminum alloy. On the other hand, the porosity, pore distribution and water permeability of the ceramic supports increase proportionally with the ratio of aluminum alloy to porcelain matrix for flat and tubular configurations.
      PubDate: 2022-05-13
       
  • Predicting COVID-19 future trends for different European countries using
           Pearson correlation

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      Abstract: Abstract The ability to accurately forecast the number of COVID-19 cases and future case trends would certainly assist governments and various organisations in strategising and preparing for the newly infected cases well in advance. Many predictions have failed to foresee future COVID-19 cases due to the lack of reliable data; however, such data are now widely available for predicting future trends in COVID-19 after more than one and a half years of the pandemic. Also, various countries are closely monitoring other countries that are experiencing a surge in COVID-19 cases in the expectation of similar scenarios, but this does not always produce correct results, as no research has identified specific correlations between different countries in terms of COVID-19 cases. During the past 18 months, many nations have watched countries whose COVID-19 cases have risen sharply, in anticipation of handling the situation themselves. However, this did not provide accurate results, as no research was conducted that compared countries to determine if their COVID-19 case trends were correlated. As official data on COVID-19 cases has become increasingly available, using the Pearson correlation technique to pinpoint the countries that should be closely monitored will help governments plan and prepare for the number of infections that are expected in the future at an early stage. In this study, a simple and real-time prediction of COVID-19 cases incorporating existing variables of coronavirus variants was used to explore the correlation among different European countries in terms of the number of COVID-19 cases officially recorded on a daily basis. Data from selected countries over the past 76 weeks were analysed using a Pearson correlation technique to determine if there were correlations between case trends and geographical position. The correlation coefficient (r) was employed for identifying whether the different countries in Europe were interrelated, with r > 0.85 indicating they were very strongly correlated, 0.85 > r > 0.8 indicating that they were strongly correlated, 0.8 > r > 0.7 indicating that they were moderately correlated, and r < 0.7 indicating that the examined countries were either weakly correlated or that a correlation did not exist. The results showed that although some neighbouring countries are strongly correlated, other countries that are not geographically close are also correlated. In addition, some countries on opposite sides of Europe (Belgium and Armenia) are also correlated. Other countries (France, Iceland, Israel, Kosovo, San Marino, Spain, Sweden and Turkey) were either weakly correlated or had no relationship at all.
      PubDate: 2022-05-12
       
  • Coupling air stripping process and anaerobic digestion for the treatment
           of landfill leachate: organics degradation and cytotoxicity evaluation

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      Abstract: Abstract Landfill leachate (LFL) from a controlled discharge in Tunisia was found to be highly loaded with ammonia. This study investigated the feasibility of an air stripping process aiming to mitigate the inhibitory effect of ammonia. Optimization of this process, using an orthogonal central composite design, intended to reduce the ammonia concentration and also to fix it in a safe range for the subsequent anaerobic process. Optimization showed that, to remove 60% of ammonia, pH, air flow rate, and reaction time should be fixed at 10.8, 6 L min−1, and 18 h, respectively. The air stripping process improved the anaerobic digestion (AD) of leachate in an upflow anaerobic fixed bed reactor. Chemical oxygen demand (COD) removal efficiency exceeded 80% at an organic loading rate (OLR) of 1.3 g COD L−1 day−1. Analysis of the organic compounds monitored by gas chromatography coupled to mass spectrometry (GC–MS) showed that contaminants were efficiently removed after the anaerobic process. Cytotoxicity was significantly reduced subsequent to the air stripping and anaerobic process.
      PubDate: 2022-04-28
       
  • Antifungal activity of volatile organic compounds (VOCs) produced by
           Streptomyces olivochromogenes S103 against Candida albicans

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      Abstract: Abstract The genus Streptomyces remains a major source of novel pharmaceutically relevant compounds with antimicrobial activity. A screening method was carried out using ten strains of the genus Streptomyces, isolated from Tunisian soil (Ain Drahem), against Candida albicans pathogenic yeast. The antifungal activity of volatile compounds (VOCs) of Streptomyces isolates was released with the double dish method and the separate compartments dish method. This screening allowed us to select strain S103, which showed the highest inhibition rate against Candida albicans up to 65%. This strain was identified as Streptomyces olivochromogenes on the basis of its morphological characteristics, and 16S rRNA gene sequence analysis. After 14 days of incubation, solid-phase microextraction followed by gas chromatography-mass spectrometry (SPME–GC–MS) identified 15 volatile organic compounds produced by this strain. Among these, the most abundant volatile substance was d-limonene, with 55.81% of total peaks. Bioassay with standard d-limonene showed that 200 µl per plate completely inhibited C. albicans growth by fumigation. Hence, microbial VOCs may be a new therapeutic alternative to combat the high incidence of Candida infections.
      PubDate: 2022-04-21
       
  • Evaluating the importance of urban green spaces: a spatial analysis of
           citizens’ perceptions in Thessaloniki

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      Abstract: Abstract In Greek cities, urban green spaces are scarce and well below acceptable standards. However, policy makers and planners are not prioritizing long-term planning strategies for urban green and do not attempt to engage citizens in relevant decision-making and urban planning processes. In this context, a web-based public survey was conducted in the city of Thessaloniki (Greece) during the COVID-19 pandemic, aiming to identify citizens’ attitudes, satisfaction levels, actual behaviour and future expectations about urban green spaces (UGS). It also aimed to measure the effect of COVID-19 (mobility) restrictions on UGS visitation. All these issues were explored through a spatial lens, by developing measurable and mappable results suitable for future urban planning decisions. According to these results, citizens tend to report a very low satisfaction level about the current state of UGS (in terms of their adequacy and quality), and they tend to travel a great distance to reach an urban park (about 2 km on average). Moreover, the results indicate that spatial differences are very significant in terms of UGS availability and accessibility. Another important outcome of this study is that, unlike in other cities, the frequency of visiting green spaces in Thessaloniki did not increase during the pandemic. On the contrary, a slight downward trend was observed, maybe due to the combined effect of restriction measures and the lack of proximity/availability of UGS to local population groups. The maps produced in this study may thus facilitate well-informed planning decisions related to the development of new green projects.
      PubDate: 2022-04-12
       
  • Mapping of potential sites for rainwater harvesting structures using GIS
           and MCDM approaches: case study of the Toudgha watershed, Morocco

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      Abstract: Abstract The Toudgha watershed, located in southeastern Morocco, is characterized by an arid climate and an erratic spatiotemporal rainfall distribution. In this area, rainwater harvesting structures play a considerable role in water supply application and ensure integrated water management. The main aim of this work was to develop water mobilization construction plans based on multi-criteria analysis in order to optimize the selection of sites for rainwater harvesting structures. Several criteria that control the availability of rainwater harvesting structure construction were selected and analyzed using remote sensing, geographic information systems, and the analytical hierarchy process, and were integrated in order to weight the influence of the selected criteria. As a result, and based on the multi-criteria decision maker, the potential areas were mapped and classified on the basis of their suitability for rainwater harvesting structure construction. Available areas for water harvesting systems accompanying agricultural activities and ecological tourism cover 87.72% of the total area of the watershed. Suitable zones for groundwater recharge due to fracture permeability were estimated to comprise about 12.35% of the total area of the watershed. Potential sites for rainwater harvesting structures, especially hill dams, account for 5.93% of the total area. The suitability of hill dams construction was confirmed by evaluating the storage capacities of four proposed dams. The results of this study provide decision makers with a useful map for water mobilization planning aimed at providing an additional water supply for various uses.
      PubDate: 2022-03-10
      DOI: 10.1007/s41207-022-00294-7
       
  • Environmental impact assessment of protected designation of origin (PDO)
           foods: the case of Vostizza Corinthian currants in Greece

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      Abstract: Abstract This study deals with the environmental impact assessment resulting from the cultivation and processing of a protected designation of origin product, namely the “Currants of Vostizza.” Currants are dried ripe fruits of the vine plants. The cultivation of the currant has a long history in Greece and has played a key role in the development of the country. The present study aims to quantify the life-cycle environmental impacts and highlight the potential options for improving both the cultivation and processing of the product. Production inventory data were collected via the use of a questionnaire applied to farmers, while processing data were collected from a major processing and exporting company. The impact assessment results reveal that processing of the currants is the dominant life-cycle stage in terms of environmental impact, owing to the use of fossil-based electricity contributing to all of the impact categories, ranging from 68% contribution to photochemical oxidation down to 12% contribution to eutrophication, followed by packaging cardboard and ammonia nitrate used as fertilizer, ranging from 3% to 25% contribution to all impact categories.
      PubDate: 2022-03-10
      DOI: 10.1007/s41207-022-00297-4
       
  • Correction to: The kinetics and equilibrium sorption of methylene blue on
           plant residues in aqueous solution

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      PubDate: 2022-03-08
      DOI: 10.1007/s41207-022-00299-2
       
  • Groundwater quality evolution in the agro-based areas of southern Tunisia:
           environmental risks of emerging farming practices

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      Abstract: Abstract Increasing agricultural production is associated with serious contamination issues with different natural resources—principally groundwater resources, which are constantly used for irrigation in quasi-total agro-regions under arid and semi-arid climatic conditions. Different types of trace elements and heavy metals are measured at high levels in shallow aquifer water tables in agricultural lands. This nonpoint pollution represents a huge challenge, as it is often difficult to survey and remediate. In the agro-based region of SW Tunisia, the impacts of agricultural activities on natural resources have raised special concern about the availability of these resources in sufficient quantities and with suitable quality. Thus, the evolution of trace elements in deep groundwater resources [Complex Terminal (CT) and Continental Intercalaire (CI)] used for irrigation was assessed with respect to farming practices (irrigation rate, fertilizer application, etc.). Data from field survey and laboratory analyses proved that the concentrations of some trace elements, namely nitrate (NO3−), phosphate (PO42−), potassium (K+), bromine (Br), and fluorine (F−), in the sampled groundwater exceed the recommended values for irrigation waters, as they locally exceed 300 mg/L. According to the collected data, the contamination of these deep confined aquifers is spread across the study area and has been occurring continuously for more than 10 years. This pollution constrains the sustainable use of these resources and leads to numerous environmental issues. Furthermore, it brings serious health risks, as the contaminated deep aquifers are used for both agriculture and drinking purposes. The mismanagement of agricultural activities and farming practices has induced quality degradation of reservoirs at depths of more than 1500 and 2000 m, indicating that limited knowledge of the properties of the hydrogeological system is the main factor constraining a thorough understanding of the hydrodynamic behavior of the aquifers. Detailed, consistent, interdisciplinary characterization of these deep resources is required in order to implement promising management actions.
      PubDate: 2022-03-08
      DOI: 10.1007/s41207-021-00289-w
       
  • Hydrogeochemical assessment to characterize the water quality for
           agricultural use in Mexanna and Bougous dams in the province of El Tarf,
           Algeria

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      Abstract: Abstract The Mexa and Bougous dams were built to control river floods and supply crop-irrigation and drinking water. This study aimed to characterize the hydrogeochemical state in the region containing the dams, which influences the quality of the waters and thus their suitability for agricultural use, given the extent of the river networks that naturally transport sediments and pollutants into the reservoirs via streams. Thus, some physicochemical and organic parameters, including electrical conductivity, calcium, magnesium, sodium, potassium, chloride, bicarbonate, sulfate, biological oxygen demand, nitrite, ammonium, and phosphate, were used as benchmarks to examine the stiffness of the water pollution. Sampling was carried out during May and September of 2011 and 2012. The obtained results showed that, according to the Stiff diagram, the dominant hydrogeochemical facies is calcium bicarbonate in waters that do not have calcium levels in excess of 3 meq/l and bicarbonate levels in excess of 2.4 meq/l. The organic pollution index disclosed that the waters have evolved from a moderate to a high degree of organic pollution due to the accumulation of pollutants and nutrients from waste disposal and fertilizers. The samples fell into the C2-S1 class in the Richards diagram; this implies that the waters are suitable for plants that are salt tolerant, but that the use of these waters can cause problems for clay soils. However, in the long term, irrigation with the dam waters may pose difficulties for agriculture due to the resulting increase in the electrical conductivity of the soil. This study concludes that water salinity and alkalinity affect crop suitability, meaning that the temporal monitoring of water quality is needed to avoid adverse consequences for crop production.
      PubDate: 2022-03-01
      DOI: 10.1007/s41207-022-00291-w
       
  • Ammonium nitrate explosion at the main port in Beirut (Lebanon) and air
           pollution: an analysis of the spatiotemporal distribution of nitrogen
           dioxide

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      Abstract: Abstract An explosion of the ammonium nitrate (AN) stored at Beirut Port devastated the city on Tuesday 4 August 2020. Such an explosion produces pollutants such as nitrogen oxides (NOx). The most common NOx is nitrogen dioxide (NO2), which is present in the atmosphere due to natural and anthropogenic processes. The presence of NO2 is used as indicator of air pollution. However, the specific contribution of NO2 to air quality is uncertain due to the presence of other constituents, especially particulate matter (PM10). Research has shown that extended exposure to NO2 may result in serious health effects. This study investigated the impact of the explosion on NO2 levels in the atmosphere above Beirut and the surrounding area. NO2 data from the Sentinel-5P program were used to map the levels of NO2. Furthermore, ground-monitoring data were used to assess the levels of PM10 and ozone (O3) due to the evident association between these constituents and NO2. Results showed that NO2 levels were higher than before the blast. However, 7 days after the explosion, NO2 levels had returned to normal, while the levels of PM10 and O3 remained normal following the explosion. However, a slight increase in the daily average atmospheric pressure was noticed after the explosion, which was attributed to the decomposition of ammonium nitrate.
      PubDate: 2022-02-26
      DOI: 10.1007/s41207-022-00296-5
       
  • Wastewater Pollution Prevention for volatile organic compounds (Benzene,
           Toluene, Ethylbenzene, and Xylene) using cloud point extraction and
           regeneration of surfactant by evaporation

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      Abstract: Abstract The aim of this work was the cloud point extraction (CPE) of volatile organic compounds, namely benzene, toluene, ethylbenzene, and p-xylene (BTEX), from aqueous solutions using the readily biodegradable nonionic surfactant PONPE 7.5. Binary water/surfactant and pseudo-binary (in the presence of solute) phase diagrams were plotted. The extraction results for four quantities—Extraction efficiency (E), residual concentrations of solute and surfactant in the dilute phase (Xs,w and Xt,w, respectively), and volume fraction of coacervate at equilibrium (Фc)—were expressed as functions of the wt.% surfactant and the temperature. The effect of sodium sulfate and cetyltrimethylammonium bromide (CTAB) addition was also studied, and the possibility of recycling the surfactant was demonstrated. The results obtained for each parameter upon applying CPE to remove BTEX were represented on three-dimensional diagrams using response surface methodology (RSM). We sought the optimal tradeoff between the parameters that govern CPE efficiency according to the initial concentration of surfactant and the temperature. E was found to increase with surfactant concentration and hydrocarbon alkylation degree in the following order: B < T < E < X, with respective maximum values of 75, 83, 90, and 95%, without the addition of sodium sulfate or CTAB. The concentration of the solute in the coacervate increased as the temperature, surfactant or additive concentration, and degree of alkylation of the aromatic solute increased.
      PubDate: 2022-02-23
      DOI: 10.1007/s41207-022-00292-9
       
  • Urban environmental issues in the metropolitan area of Sfax City, Tunisia:
           could an integrated management solve the problem'

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      Abstract: Abstract The major challenge facing Sfax, the second-largest city in Tunisia, is how to shift successfully and smoothly toward green and innovative sustainable development. Indeed, Sfax is traumatized by more than a half-century of irrelevant environmental choices and, at the same time, it aspires to take advantage of the national circumstances in multiple transitions, driven by a real desire to get rid of a stressful environmental heritage. Therefore, its struggle with the transition to an efficient and ecofriendly economy will not be simple. Within this context, a group of researchers from various scientific backgrounds from Sfax University have joined their efforts and went through more than 270 previously published documents over the past three decades aiming to revive the concept of environmental integration in Sfax. These scholars, although belonging to different scientific fields, succeeded in synthesizing the latest scientific works related to the region dealing with local environmental components and threats, water resources, wastewater handling, solid waste management, urban development, and infrastructure. An outcome on the current status of this modern traumatized city and an assessment of several local technological advances of the region, as well as a thorough investigation of the various dedicated reconciliation plans were drawn. Further, it was possible to sketch a double entry matrix showing the various affected zones and potential environmental risks that should be considered. Scores were assigned to the affected zones to assess the incurred danger and propose possible remedies. This paper provides a holistic view of the complex environmental systems in Sfax, and demonstrates how efforts of local, regional, and national authorities can address the environmental challenges. This review is intended to fairly highlight the environmental problems in the city, with the ultimate goal of encouraging the re-conversion of the city into a competitive and sustainable Mediterranean metropolis city, in accordance with the Barcelona Convention.
      PubDate: 2022-02-19
      DOI: 10.1007/s41207-022-00295-6
       
  • Soil salinity assessment in the region of Bordjia (Algeria)

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      Abstract: Abstract The present study deals with the salinization problem in the plain of Bordjia, which has caused considerable loss of its arable lands. The plain is located in the northwest of Algeria, which makes it essential to use irrigation in this plain because of its semi-arid climate. Physicochemical and mineralogical analyses revealed a clayey-silty texture with medium plasticity, and the predominant minerals were illite and kaolinite. A comparison of different variables (CEC, pH, SAR, and ESP) showed that the soil exhibits a very saline ascending salt profile, thus classifying it as a saline-sodium soil, with severe to very severe alkalinity. The results for the electrical conductivity showed that the salinity is more concentrated in the southern region of the plain. Based on a spatial interpolation method derived from geostatistics, it was possible to map the variation in salinity and  the salinity in unsampled places. The spatial distribution of the salinity was then obtained from the electrical conductivity data and classified. Analysis of studied samples showed that the soil in the plain is a saline halomorphic soil dominated by the presence of soluble salts. Simple linear regressions of the CEC with the specific surface area (SS) and the clay percentage (C%) indicated that CEC is more significantly correlated with the SS than with the C%. The rising salinity profile is linked to the water level in the dry soil, which causes salts to rise through capillary action. High salt concentrations are accumulated in the soil matrix at the soil surface. It seems obvious that the progression of salinity is affected by the hot climate in the study region.
      PubDate: 2022-02-02
      DOI: 10.1007/s41207-022-00290-x
       
  • Hydrological modelling using the distributed hydrological model CEQUEAU in
           a semi-arid mountainous area: a case study of Ourika watershed, Marrakech
           Atlas, Morocco

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      Abstract: Abstract The Hydrological modelling in a semi-arid mountainous area is very challenging due to the irregular climate and the spatial variability of vegetation cover and topography. The hydrological model CEQUEAU was used with a daily time step on the arid and semi-arid mountainous region of the Ourika watershed. The capability of the model to simulate the daily streamflow was evaluated. The sensitivity analysis was carried out to understand which parameters had the largest influence on model outputs. The results show that the calibration and validation simulations of the daily stream flows could be considered satisfactory. The sensitivity analysis demonstrated that each of the model parameters (snowmelt and soil parameters) had a certain degree of influence on model Behaviour. The model was more sensitive to Threshold of rain-snow transformation (STRNE), Infiltration coefficient in the LOWER ZONE reservoir (CIN) and Infiltration threshold of the UPPER ZONE reservoir towards the LOWER ZONE reservoir (HINF) parameters. However, the Coefficient taken away at a potential rate by evapotranspiration (HPOT) parameters of low draining of the LOWER ZONE reservoir (CVNB), Intermediate draining threshold of the UPPER ZONE reservoir (HINT), Threshold of high draining of the LOWER ZONE reservoir (HNAP) and Threshold of water, had no significant influence on the model performance in relation to the Nash criterion.
      PubDate: 2022-01-31
      DOI: 10.1007/s41207-021-00287-y
       
 
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