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 401 - 378 of 378 Journals sorted alphabetically
International Journal of Environment and Pollution     Hybrid Journal   (Followers: 3)
International Journal of Environment and Sustainable Development     Hybrid Journal   (Followers: 17)
International Journal of Environment and Waste Management     Hybrid Journal   (Followers: 2)
International Journal of Environment, Workplace and Employment     Hybrid Journal   (Followers: 7)
International Journal of Environmental Engineering     Hybrid Journal   (Followers: 6)
International Journal of Environmental Health Engineering     Open Access   (Followers: 1)
International Journal of Environmental Health Research     Hybrid Journal   (Followers: 3)
International Journal of Environmental Policy and Decision Making     Hybrid Journal   (Followers: 3)
International Journal of Environmental Research     Hybrid Journal  
International Journal of Environmental Research and Public Health     Open Access   (Followers: 22)
International Journal of Environmental Science and Technology     Hybrid Journal   (Followers: 6)
International Journal of Environmental Studies     Hybrid Journal   (Followers: 5)
International Journal of Exergy     Hybrid Journal   (Followers: 2)
International Journal of Global Environmental Issues     Hybrid Journal   (Followers: 4)
International Journal of Global Sustainability     Open Access   (Followers: 2)
International Journal of Global Warming     Hybrid Journal  
International Journal of Greenhouse Gas Control     Partially Free   (Followers: 5)
International Journal of Hygiene and Environmental Health     Hybrid Journal   (Followers: 7)
International Journal of Logistics Research and Applications : A Leading Journal of Supply Chain Management     Hybrid Journal   (Followers: 16)
International Journal of Mining and Geo-Engineering     Open Access  
International Journal of Phytoremediation     Hybrid Journal   (Followers: 1)
International Journal of Process Systems Engineering     Hybrid Journal   (Followers: 1)
International Journal of Recycling of Organic Waste in Agriculture     Open Access   (Followers: 1)
International Journal of Reliability and Safety     Hybrid Journal   (Followers: 11)
International Journal of Renewable Energy Development     Open Access   (Followers: 6)
International Journal of Social Sciences and Management     Open Access   (Followers: 2)
International Journal of Soil, Sediment and Water     Open Access   (Followers: 4)
International Journal of Stress Management     Full-text available via subscription   (Followers: 6)
International Journal of Sustainable Construction Engineering and Technology     Open Access   (Followers: 7)
International Journal of Sustainable Engineering     Hybrid Journal   (Followers: 4)
International Journal of Sustainable Materials and Structural Systems     Hybrid Journal   (Followers: 1)
International Journal of Sustainable Society     Hybrid Journal   (Followers: 2)
International Journal of the Commons     Open Access   (Followers: 2)
International Journal of Toxicology     Hybrid Journal   (Followers: 17)
International Journal of Water Resources and Environmental Engineering     Open Access   (Followers: 12)
International Review of Environmental and Resource Economics     Full-text available via subscription   (Followers: 4)
Iranian Journal of Health and Environment     Open Access  
ISLE: Interdisciplinary Studies in Literature and Environment     Hybrid Journal   (Followers: 3)
Isotopes in Environmental and Health Studies     Hybrid Journal  
JACEE (Journal of Advanced Civil and Environmental Engineering)     Open Access  
Jahangirnagar University Environmental Bulletin     Open Access  
Journal for the History of Environment and Society     Open Access   (Followers: 3)
Journal of Bioremediation & Biodegradation     Open Access   (Followers: 1)
Journal of Earth Science & Climatic Change     Open Access   (Followers: 14)
Journal of Petroleum & Environmental Biotechnology     Open Access   (Followers: 1)
Journal of Advances in Environmental Health Research     Open Access   (Followers: 2)
Journal Of Advances In Natural Sciences     Open Access   (Followers: 1)
Journal of Aging and Environment     Hybrid Journal   (Followers: 4)
Journal of Agricultural and Environmental Ethics     Hybrid Journal   (Followers: 8)
Journal of Agricultural Chemistry and Environment     Open Access   (Followers: 3)
Journal of Agriculture and Ecology Research International     Open Access  
Journal of Air Pollution and Health (رتبه علمی- پژوهشی)     Open Access  
Journal of Anatolian Environmental and Animal Sciences     Open Access  
Journal of Applied Ecology     Hybrid Journal   (Followers: 211)
Journal of Applied Meteorology and Climatology     Hybrid Journal   (Followers: 42)
Journal of Applied Sciences and Environmental Management     Open Access   (Followers: 1)
Journal of Applied Toxicology     Hybrid Journal   (Followers: 19)
Journal of Applied Volcanology     Open Access   (Followers: 7)
Journal of Applied Water Engineering and Research     Hybrid Journal  
Journal of Arid Environments     Hybrid Journal   (Followers: 12)
Journal of Biochemical and Molecular Toxicology     Hybrid Journal   (Followers: 4)
Journal of Biosystems Engineering     Full-text available via subscription  
Journal of Chemical Ecology     Hybrid Journal   (Followers: 4)
Journal of Civil Engineering and Environmental Sciences     Open Access  
Journal of Climate     Hybrid Journal   (Followers: 56)
Journal of Climate Change and Health     Open Access   (Followers: 6)
Journal of Coastal Research     Hybrid Journal   (Followers: 31)
Journal of Contaminant Hydrology     Hybrid Journal   (Followers: 19)
Journal of Earth, Environment and Health Sciences     Open Access   (Followers: 2)
Journal of East African Natural History     Full-text available via subscription   (Followers: 7)
Journal of Ecology     Hybrid Journal   (Followers: 142)
Journal of Ecology and Environment     Open Access   (Followers: 3)
Journal of Economic Development, Environment and People     Open Access   (Followers: 11)
Journal of Energy & Natural Resources Law     Hybrid Journal   (Followers: 5)
Journal of Energy and Environment Technology of Graduate School Siam Technology College     Open Access  
Journal of Environment and Earth Science     Open Access   (Followers: 11)
Journal of Environment and Ecology     Open Access   (Followers: 10)
Journal of Environment Pollution and Human Health     Open Access   (Followers: 3)
Journal of Environmental Analysis and Progress     Open Access  
Journal of Environmental and Agricultural Studies     Open Access   (Followers: 1)
Journal of Environmental and Public Health     Open Access   (Followers: 16)
Journal of Environmental Assessment Policy and Management     Hybrid Journal   (Followers: 5)
Journal of Environmental Chemical Engineering     Hybrid Journal   (Followers: 5)
Journal of Environmental Economics and Policy     Partially Free   (Followers: 4)
Journal of Environmental Education     Hybrid Journal   (Followers: 7)
Journal of Environmental Engineering and Landscape Management     Open Access   (Followers: 8)
Journal of Environmental Engineering and Science     Hybrid Journal   (Followers: 2)
Journal of Environmental Extension     Full-text available via subscription  
Journal of Environmental Geography     Open Access   (Followers: 6)
Journal of Environmental Law     Hybrid Journal   (Followers: 22)
Journal of Environmental Management     Hybrid Journal   (Followers: 44)
Journal of Environmental Management     Open Access   (Followers: 1)
Journal of Environmental Management and Tourism     Open Access   (Followers: 13)
Journal of Environmental Media     Hybrid Journal  
Journal of Environmental Planning and Management     Hybrid Journal   (Followers: 26)
Journal of Environmental Policy & Planning     Hybrid Journal   (Followers: 14)
Journal of Environmental Professionals Sri Lanka     Open Access  
Journal of Environmental Protection     Open Access   (Followers: 1)
Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances and Environmental Engineering     Hybrid Journal   (Followers: 5)
Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes     Hybrid Journal   (Followers: 5)
Journal of Environmental Science and Technology     Open Access   (Followers: 7)
Journal of Environmental Sciences     Full-text available via subscription   (Followers: 8)
Journal of Environmental Statistics     Open Access   (Followers: 4)
Journal of Environmental Studies and Sciences     Partially Free   (Followers: 2)
Journal of Environmental Sustainability     Open Access   (Followers: 7)
Journal of Environments     Open Access  
Journal of Exposure Science and Environmental Epidemiology     Hybrid Journal   (Followers: 6)
Journal of Fisheries and Environment     Open Access  
Journal of Forest and Natural Resource Management     Open Access  
Journal of Freshwater Ecology     Hybrid Journal   (Followers: 14)
Journal of Geography, Environment and Earth Science International     Open Access  
Journal of Geoscience and Environment Protection     Open Access  
Journal of Great Lakes Research     Hybrid Journal   (Followers: 5)
Journal of Green Building     Full-text available via subscription   (Followers: 10)
Journal of Hazardous Materials     Hybrid Journal   (Followers: 12)
Journal of Hazardous Materials Advances     Open Access  
Journal of Health Management     Hybrid Journal   (Followers: 10)
Journal of Health Organisation and Management     Hybrid Journal   (Followers: 29)
Journal of Housing and the Built Environment     Hybrid Journal   (Followers: 9)
Journal of Human Behavior in the Social Environment     Hybrid Journal   (Followers: 6)
Journal of Hydrology X     Open Access   (Followers: 5)
Journal of Industrial Ecology     Hybrid Journal   (Followers: 17)
Journal of Integrative Environmental Sciences     Hybrid Journal   (Followers: 4)
Journal of International Maritime Safety, Environmental Affairs, and Shipping     Open Access   (Followers: 1)
Journal of Iron and Steel Research International     Hybrid Journal   (Followers: 7)
Journal of Korean Society of Environmental Engineers     Open Access  
Journal of Land Use Science     Hybrid Journal   (Followers: 3)
Journal of Management and Sustainability     Open Access   (Followers: 7)
Journal of Mega Infrastructure & Sustainable Development     Hybrid Journal  
Journal of Natural Resources and Development     Open Access   (Followers: 2)
Journal of Natural Sciences Research     Open Access   (Followers: 1)
Journal of Occupational and Environmental Hygiene     Hybrid Journal   (Followers: 6)
Journal of Operational Oceanography     Hybrid Journal   (Followers: 5)
Journal of Organizational Behavior     Hybrid Journal   (Followers: 59)
Journal of Outdoor and Environmental Education     Hybrid Journal   (Followers: 2)
Journal of Pharmacological and Toxicological Methods     Hybrid Journal   (Followers: 7)
Journal of Plant Science and Phytopathology     Open Access  
Journal of Policy Analysis and Management     Hybrid Journal   (Followers: 28)
Journal of Population and Sustainability     Open Access  
Journal of Reliable Intelligent Environments     Hybrid Journal  
Journal of Renewable and Sustainable Energy     Hybrid Journal   (Followers: 11)
Journal of Research in Forestry, Wildlife and Environment     Open Access   (Followers: 5)
Journal of Rural and Community Development     Open Access   (Followers: 1)
Journal of Safety Engineering     Open Access   (Followers: 37)
Journal of Safety Research     Hybrid Journal   (Followers: 89)
Journal of School Violence     Hybrid Journal   (Followers: 6)
Journal of Sustainability and Environmental Management     Open Access   (Followers: 4)
Journal of Sustainable Development     Open Access   (Followers: 25)
Journal of Sustainable Development Studies     Open Access   (Followers: 15)
Journal of Sustainable Society     Open Access   (Followers: 2)
Journal of the American Planning Association     Hybrid Journal   (Followers: 18)
Journal of the Atmospheric Sciences     Hybrid Journal   (Followers: 83)
Journal of Tropical Ecology     Hybrid Journal   (Followers: 15)
Journal of Urban and Environmental Engineering     Open Access   (Followers: 5)
Journal of Urban Ecology     Open Access   (Followers: 5)
Journal of Vietnamese Environment     Open Access   (Followers: 1)
Journal of Water and Environmental Nanotechnology     Open Access   (Followers: 1)
Journal of Water Security     Open Access   (Followers: 6)
Julius-Kühn-Archiv     Open Access  
Jurnal Kesehatan Lingkungan     Open Access  
Jurnal Manusia dan Lingkungan     Open Access  
Jurnal Pengendalian Pencemaran Lingkungan     Open Access  
Jurnal Presipitasi     Open Access   (Followers: 1)
Jurnal Rekayasa Kimia & Lingkungan     Open Access  
Jurnal Sains & Teknologi Lingkungan     Open Access  
Jurnal Wilayah dan Lingkungan     Open Access  
Knowledge Management Research & Practice     Hybrid Journal   (Followers: 16)
Koedoe : African Protected Area Conservation and Science     Open Access   (Followers: 2)
Lake and Reservoir Management     Hybrid Journal   (Followers: 7)
Landscape Ecology     Hybrid Journal   (Followers: 61)
Landscapes     Hybrid Journal   (Followers: 18)
Latin American Journal of Management for Sustainable Development     Hybrid Journal  
Letras Verdes. Revista Latinoamericana de Estudios Socioambientales     Open Access  
Limnological Review     Open Access   (Followers: 3)
Living Reviews in Landscape Research     Open Access  
Local Environment: The International Journal of Justice and Sustainability     Hybrid Journal   (Followers: 8)
Low Carbon Economy     Open Access   (Followers: 4)
Luna Azul     Open Access  
M+A. Revista Electrónica de Medioambiente     Open Access  
Macquarie Journal of International and Comparative Environmental Law     Full-text available via subscription   (Followers: 7)
Madagascar Conservation & Development     Open Access   (Followers: 2)
Management International Review     Hybrid Journal   (Followers: 7)
Management of Environmental Quality: An International Journal     Hybrid Journal   (Followers: 2)
Management of Sustainable Development     Open Access   (Followers: 4)
Marine Ecology     Hybrid Journal   (Followers: 27)
Marine Ecology Progress Series MEPS     Hybrid Journal   (Followers: 34)
Marine Environmental Research     Hybrid Journal   (Followers: 31)
Marine Pollution Bulletin     Hybrid Journal   (Followers: 36)
Materials for Renewable and Sustainable Energy     Open Access   (Followers: 6)
Medio Ambiente y Urbanizacion     Full-text available via subscription  
Mediterranean Geoscience Reviews     Hybrid Journal  
Membranes     Open Access   (Followers: 3)
Metabarcoding and Metagenomics     Open Access  
Michigan Journal of Sustainability     Open Access   (Followers: 1)
Microbial Risk Analysis     Full-text available via subscription  
Microplastics and Nanoplastics     Open Access   (Followers: 1)
Mine Water and the Environment     Hybrid Journal   (Followers: 5)
Mitigation and Adaptation Strategies for Global Change     Open Access   (Followers: 8)
Modeling Earth Systems and Environment     Hybrid Journal   (Followers: 1)
Monteverdia     Open Access   (Followers: 1)

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Iranian Journal of Health and Environment
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2008-2029 - ISSN (Online) 2008-3718
Published by Tehran University of Medical Sciences Homepage  [21 journals]
  • The effects of poneh essential oil (free and nonoliposomes forms) on
           chemical, biological and sensory characteristics of minced silver carp
           fish at 4 °C

    • Authors: Mohammad Ahmady
      Abstract: Background and Objective: Nowadays, the application of procedures to minimize oxidative and microbial spoilage in marine products is economically and hygienically important. This study was performed to determine the effect of free and nanoliposome forms of poneh (Mentha pulegium L.) essential oil to increase the shelf life and improve the sensory characteristics of silver carp minced fish (Hypophthalmichthys molitrix) during storage time.
      Materials and Methods: In this study, the antibacterial properties of 1 and 2% essential oil and nanoliposomes form on the microbial population of minced silver carp fish inoculated with Bacillus cereus and Escherichia coli were measured. Also, chemical tests (DPPH (2,2-Diphenyl-1-picrylhydrazyl assay, measurement of iodine peroxide (PV), pH, total volatile nitrogen (TVB-N) and thiobarbituric acid (TBARs)) and sensory properties of minced silver carp were evaluated during 12 days of refrigerated storage.
      Results: The results showed that the addition of poneh essential oil (free and nanoliposomes) according to the microbial results and the results of chemical experiments can effectively prevent microbial growth and chemical spoilage (p
       
  • Educational need assessment for empowering health and environmental
           specialists

    • Authors: Hassan Aslani
      Abstract: Background and Objective: By accurately identifying environmental issues, individuals can acquire skills to better solve environmental problems. To this end, the most appropriate method is to assess the educational needs of individuals to pave the way for the promotion of environmental knowledge. The present study aims to assess the need for training courses to empower professionals to increase their knowledge of environmental issues and educate others to take an important step in improving environmental health in society.
      Materials and Methods: The present study was a descriptive needs assessment study using Delphi technique. In the first stage, the designed questionnaire was given to 150 people (faculty members, experts and students) to express their opinions in the proposed areas. In the second stage, a supplementary questionnaire entitled General needs for faculty members, specialized needs for experts and general and specialized needs for students were provided to individuals and the importance of the issues from their point of view was examined. Finally, the most important issues were prioritized by experts. Data analysis was performed using SPSS-26 software.
      Results: The total number of educational needs extracted from the first stage of Delphi was 120 items, of which 31 items related to general needs (11 teaching and evaluation areas, 10 research areas and 10 communication and personal development items) and 89 items related to specialized needs. (27 cases of air pollution, 23 cases of waste management, 17 cases of wastewater treatment and reuse of wastewater, 10 cases of water treatment and pollution and 12 cases of soil pollution and its removal methods). In the second and third rounds, the importance of these items was determined by the target groups by scoring, and at the end, the first five priorities of each item were identified.
      Conclusion: The results of this study, considering the comprehensive review of three target groups and determining and prioritizing the needs for each group, can increase the level of environmental awareness and empowerment of experts, which ultimately enhance the efficiency of the system and is an important step for environmental educational planning.
       
  • Evaluation of groundwater quality for drinking purposes in Kashan using
           water quality indicators

    • Authors: Amir Hossein Mahvi
      Abstract: Background and Objective: Groundwater is the primary water source for drinking and agricultural activities in arid and semi-arid regions. Rainfall, land use, geological structure, aquifer mineralogy, and duration of water contact with the environment in the basement are the main factors affecting the chemical quality of groundwater. This study aimed to determine the physicochemical properties of groundwater by considering the water quality index (WQI) and its quality assessment for drinking water.
      Materials and Methods: In this study, 71 wells of Kashan were sampled in summer 2020 with three samplings from each well, and physical and chemical parameters were studied, water quality index was determined using mathematical methods, and Pearson correlation coefficient was determined. Correlation analysis was used. Finally, the collected data were analyzed using SPSS-16 software, Excel 2013, and statistical tests. 
      Results: The calculated WQI of 71 wells in Kashan shows that 67% of the wells were of excellent quality, and 33% were of good quality in terms of water quality parameters. In total, out of 71 samples, the numerical index of water quality was 44.94, and the water was of excellent quality.
      Conclusion: The results show that ions such as sodium, sulfate, and chlorine are directly related to the counting in an area and increase the concentrations of EC and TDS, and can impair the balance of anionic and cationic aqueous solution. It was also found that more than half of the wells have excellent quality due to using water wells for drinking.
       
  • Analytical assessment of Mahabadchai river water quality using Iran water
           quality index

    • Authors: Habib Nazarnejad
      Abstract: Background and Objective: With the industrialization of communities, population increase and use of surface water, river pollution has been increased by agricultural, industrial pollutants and urban wastewater. Therefore, investigation of river pollution for regional and environmental planning is of great importance. To evaluate surface water pollution, a number of surface water quality indices have been investigated.
      Materials and Methods: Iran water quality index for surface water resources (IRWQISC) approach was used to evaluate the water quality of the Mahabadchai river, Iran. Sampling was carried out along the Mahabadchai river based on some criteria such as approximately to drainage areas for landfills/domestic and agricultural effluents.
      Results: Pearson correlation coefficient between physical, chemical and microbial parameters of water showed that fecal coliform, BOD, COD, nitrate, ammonium, phosphate, turbidity and total hardness had a significant positive relationship with each other at 99% confidence. According to this index, upstream samples of the river are classified as good, mid-stations relatively good to moderate category, and downstream samples of the river are classified as relatively bad.
      Conclusion: Based on the relationship between each variable, fecal coliform, BOD, COD, ammonium, and turbidity were more effective in determining the IRWQISC. Most of the examined variables showed low concentrations in upstream areas of the river while their concentration gradually increased along the river to downstream areas, especially close to urban and industrial districts.
       
       
  • A managerial analysis of Iran’s renewable energy development strategies
           to reduce greenhouse gases and improve health

    • Authors: Reza Arjmandi
      Abstract: Background and Objective: The present research has been performed to investigate the opportunities and challenges facing the Iran’s renewable energies development to reduce climate change and improve health and represent managerial solutions in power generation sector by SWOT-AHP analysis models.
      Materials and Methods: Using literature reviews and survey, the SWOT was applied to identify internal factors includeding strengths (S), and weaknesses (W), and external factors includeding opportunities (O), and threats (T). The strategies were drived to develop renewable energy in Iran. The proposal strategies were ranked by using the SWOT matrix and analytic hierarchy process (AHP) model.
      Results: According to the SWOT matrix calculations, total scores of internal and external factors were found as  4.1 and 4.4 of 5, respectively, which show high potentials of internal factors and opportunities. The most importannt factor of strengths (S) was found to be the great potentials of solar energy sources in Iran. The main priority of opportunities (O) is supportive laws to encourage the private sector. The most important weakness (W) was lack of comprehensive knowledge of managers and politicians about the benefits of renewable energy. The main threats (T) were low tendency of private invests, unpredictable inflation in Iran, and low prices for fossil fuels.
      Conclusion: The results of this research represent in four categories of SO, ST, WT, WO strategies. The important SO strategy is increasing guaranteed electricity purchase tariffs (GEPTs), and creating the renewable energy market. The most important strategies of ST were establishment of the renewable energy fund and assessment of exporting electricity by the private sector. The most dominant strategy of WT was modifying guaranteed electricity purchase contracts. The strategies of WO were found to be as following; convincing government agencies to provide the necessary infrastructure and support for knowledge-based companies. 
       
       
  • Potential ecological risk assessment of arsenic, cadmium, nickel and
           vanadium in the surface sediments of southern of Caspian Sea (case study:
           Khazar Abad, Sari Township)

    • Authors: Bahareh Lorestani
      Abstract: Background and Objective: Soils and sediments contamination with trace and toxic elements lead to potential ecological risk and adverse effects on human health and so have been the cause of increasing concern worldwide. Therefore, this study was carried out to potential ecological risk assessment of As, Cd, Ni and V in surface sediments of Khazar Abad, southern parts of Caspian Sea in 2019.
      Materials and Methods: In this descriptive cross-sectional study, a total of 36 surface sediment samples were collected from 12 sampling sites. After samples preparation, the elemental contents were determined using ICP-OES. Also, potential ecological risk factor (Eir) and cumulative potential ecological risk index (RI) were calculated. All statistical analyses were performed by SPSS software.
      Results: Based on the results obtained, the mean contents of As, Cd, Ni and V in analyzed samples were found to be 12.7, 0.191, 35.0, and 31.9 mg/kg, respectively. The computed values of Eir  showed that factor values were decreased in the order Cd> As> Ni> V. Additionally, the mean values of RI with 53.7 indicated that all the examined elements have the "low potential ecological risk".
      Conclusion: Accordingly, although the examined elements have shown a low potential ecological risk, cadmium with 46.4% and arsenic with 45.4% mean values of RI can cause for concern. Therefore, source identification and management of organic and inorganic pollutants and also periodic monitoring of water and sediments as the sink of environmental pollution are recommended.
       
  • Removal of imidacloprid insecticide in the photocatalytic activation of
           proxymonosulfate with modified magnesium oxide as catalyst using
           ultraviolet A

    • Authors: Gholamreza Moussavi
      Abstract: Background and Objective: Imidacloprid, a neonicotinide plant toxin, is used as an insecticide in agriculture. Due to its high degradation resistance and water solubility it is of highly concerns. Therefore, the aim of this study was to investigate the degradation of imidacloprid by modified magnesium oxide catalyst under irradiation of light and peroxymonosulfate.
      Materials and Methods: In this study, modification of magnesium oxide with nitrogen was made by sol-gel method and then iron oxide nanoparticles was used as a magnetic source. Operational parameters were catalyst loading, peroxymonosulfate concentration, reaction time and common anions (nitrate, bicarbonate and chloride). Residual concentration of contaminant was measured by high performance liquid chromatography (HPLC) and mineralization rate was evaluated by measuring TOC.
      Results: The results of the study showed that the photocatalytic degradation of the pollutant in the optimal condition was as following: catalyst concentration= 150 mg/L, peroxymonosulfate = 75 mg/L and reaction time= 60 min was 88%. Moreover, at optimum condition, the rate of mineralization was obtained 52%. Results comparison for prepared catalyst under light and dark condition indicated that the as-made catalyst is photocatalytic.
      Conclusion: The as-prepared catalyst can be activated as a photocatalyst under LED light and proxymonosulfate for removal of organic pollutants.
       
       
  • Utilisation possibilities of textile waste for the production of medium
           density fiberboard

    • Authors: Pantea Omrani
      Abstract: Background and Objective: Nowadays, in metropolitan areas, principled and hygienic waste management is very important. Recycling is one of the most appropriate options in waste management. Hereof, the present study was aimed to investigate the possibility of using textile waste fibers in the manufacture of Medium Density Fiberboard (MDF).
      Materials and Methods: This experimental study was performed on lab-scale. Fabric waste was prepared by separation method at source from a clothing manufacturer in Tehran and converted into fibers. Test boards were made with weight percentage of mixing textile waste fibers to industrial fibers at three levels of 0:100, 10:90 and 15:85, respectively, 10% urea-formaldehyde adhesive, with 16 mm thickness and 0.7 g/cm3 density by hot press. Then, properties of the boards were measured including bending strength, modulus of elasticity, internal bond, hardness, water absorption and thickness swelling. The results were analyzed with ANOVA test.
      Results: The results of ANOVA showed that the effect of textile waste fibers on the bending strength, modulus of elasticity and swelling thickness of 2 and 24 hours of boards made at 5% probability level was significant. Additionally, the highest values of physical and mechanical properties are related to made boards with 10% of textile waste fibers.
      Conclusion: The results showed that it is possible to make MDF with textile waste fibers. The use of wastes such as fabrics in the production of new functional products can be considered as one of the strategies to reduce waste and thus to maintain human health and the environment.
       
       
  • The effect of establishment of health services offices affiliated to
           Tehran university of medical sciences on environmental health indicators
           in 2020

    • Authors: Mahmood Alimohammadi
      Abstract: Background and Objective: Outsourcing services to the private sector can be a step towards achieving the goals of community health promotion, job creation, better access to health services, and improving the quality of health services. In this regard, health service offices were established in Tehran to improve the health status of food preparation, distribution and sale centers and increase food safety based on government approval. This study aimed to evaluate the roles of health services offices on environmental health indicators. 
      Materials and Methods: In this descriptive-comparative study, nine health service offices supervised by Tehran University of Medical Sciences (located in South Tehran Health Center, Eslamshahr city, and Shahr-e Rey) were surveyed. Seven environmental health indicators measured in the years before the establishment of these Health Service Offices (2015-2017) were compared with those obtained after their establishment (2018-2019). The indicators data were analyzed using Excel, SPSS software, and statistical tests.
      Results: The result showed no significant difference in public places and centers for food preparation and distribution offenders, public places with health criteria, percentage of employees with a health training certificate, health care, and percentage of inspection coverage before and after establishment of health service offices (p>0.05). However, the relationship between the food preparation indicators and distribution centers with health criteria and public places and closed food preparation and distribution centers were significant (p> 0.05).
      Conclusion: This study is one of the first researches conducted to evaluate the effectiveness of health services offices on health-safety indicators in Iran. Therefore, more comprehensive monitoring and studies should be done to evaluate these offices' performance quality and their related cost-benefit analysis.
       
       
  • Optimization of the combined integrated fixed film activated sludge and
           photocatalytic process via iron oxide-titanium dioxide nanocomposite in
           treating pharmaceutical wastewater

    • Authors: Roya Mafigholami
      Abstract: Background and Objective: Pharmaceutical wastewater has a high level of pollution load that should be treated before discharging to the environment. Integrated processes using different mechanisms are one of the most fruitful methods in wastewater treatment. In this study, combined Integrated Fixed Film Activated Sludge (IFAS) and photocatalytic processes are utilized using of Fe3O4/TiO2 nanocatalysts to decrease the COD value of pharmaceutical wastewater.
      Materials and Methods: In this study, the variables of each process are optimized using Response Surface Methodology (RSM). In the IFAS process, the variables were dissolved oxygen (DO), media filling percentage and hydraulic retention time (HRT); while in the photocatalytic process, the effects of pH of wastewater, catalyst dose and reaction time were investigated.
      Results: In optimal conditions (DO 3 mg/L, HRT 24 h and media filling percentage 65%), COD removal rate was obtained 59.15%. With the initial concentration of 1725 mg/L COD and the mentioned efficiency, the concentration of COD in the effluent diminished to 704 mg/L. However, in the photocatalytic process, during optimal conditions (pH 6.8, reaction time 105 min and catalyst dose 60 mg/L), The efficiency of the process was determined 81%, which by considering the input COD (704 mg/L), the output concentration was reduced to 134 mg/L.
      Conclusion: According to the standards provided by the Environmental Protection Agency (EPA), the effluent from the combined process can be discharged into the environment.
       
       
  • Effect of coronavirus (Covid-19) pandemic on biological air pollutants: a
           case study of Valiasr hospital in Zanjan (2019-2020)

    • Authors: Arezoo Tavakoli
      Abstract: Background and Objective: Bioaerosols as small particles enter the body by inhalation and lead to respiratory diseases based on type, concentration, and exposure time. In sensitive workplaces such as medical centers, it is necessary to pay attention to the type and population of these pollutants and the possibility of nosocomial infections. In the present study, the population and type of bioaerosols (bacteria and fungi) in the air of different hospital wards under normal conditions, visiting hours, and Covid-19 pandemic was evaluated.
      Materials and Methods: Air sampling was carried out in different wards and ambient air of Valiasr Hospital of Zanjan during September 2019 (morning and visiting hours) and October 2020 (Corona pandemic) using an air sampling pump (Flite 3- SKC Ltd) with a flow of 14.1 L/min and then cultured in Sabaroud dextrose agar and nutrient agar.
      Results: The results showed that air pollution in wards such as infectious diseases and clinics in both periods was more than other wards. The microbial density during visiting hours (before the coronavirus outbreak) was almost 30% higher than normal conditions. In October 2020, due to the coronavirus outbreak and reduced traffic, microbial air pollution in the hospital decreased. In both periods of study, the frequency of gram-positive bacteria, especially Staphylococcus species (49%) was higher than other bacteria and among fungal species the frequency of Aspergillus (47%) was higher than others.
      Conclusion: This study showed that traffic restrictions caused by the coronavirus pandemic reduce microbial density in hospital space and this achievement can be used in the future with the aim of improving air quality and controlling nosocomial infections.
       
       
  • The impact of environmental pollutants emission (carbon dioxide) on life
           expectancy of men and women in Iran

    • Authors: Moslem Ansarinasab
      Abstract: Background and Objective: Among greenhouse gases, CO2 has a crucial role; thus, its impact on health indicators such as life expectancy is of great importance. Hence, one of the most important challenges in the health sector has been the impact of the environmental pollutants emission, namely CO2, on life expectancy of men and women.
      Materials and Methods: This is a descriptive-analytical and applied design with the health economics approach. The present paper examined the impact of pollutant emissions, namely CO2, per capita income, death rate and birth rate, separately on Iranians’ life expectancy. This analysis was conducted using Quantile regression with EViews10 software during the period 1960 - 2019. In this study, first, the impact of pollutant emissions on life expectancy of all Iranians was calculated. Then, the impact of CO2 on life expectancy of Iranian men and women in different quantiles was estimated.
      Results: The results confirm the impact of carbon dioxide emissions per capita on total life expectancy was -0.133 and the impact of this pollutant emission on life expectancy obtained -0.170 and -0.127 for men and women, respectively. Both effects were estimated as negative and significant. This effect on life expectancy of men was 0.43% higher than that of women. Furthermore, the impact of death on life expectancy was negative, while the effect of per capita income on life expectancy was positive. Also, birth rate had a positive impact on women's life expectancy, whereas, it showed a negative impact on men.
      Conclusion: The study revealed that CO2 emissions had a negative impact on total life expectancy of both men and women. Thus, in order to increase life expectancy in Iran, pollutants emission, namely CO2, should be controlled. These results can be a good guide to decision makers and macro-policy makers in Iran to control environmental pollutants to increase life expectancy.
       
       
 
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