Frontiers in Environmental Engineering
Open Access journal
ISSN (Print) 2326-5779 - ISSN (Online) 2326-5787
Published by Science and Engineering Publishing Company [49 journals]
- Analysis of a Externally Modified Combustion Engine to Operate with a
Immiscible Fuel of 80% Gasoline and 20% Water
Abstract: Analysis of a Externally Modified Combustion Engine to Operate with a Immiscible Fuel of 80% Gasoline and 20% Water
Author Melchor Llosa DemartiniJuan Carlos Cuba Solan
In this paper, we present the results of the analysis of a combustion engine modified to operate with an immiscible fuel that has a ratio of 80% water and 20% gasoline. The project consisted also in redesigning the intake and exhaust system circuits of the engine and we observed that there was a substantial change in the composition of exhaust gases, finding that this change was an environment friendly solution to vehicle pollution.
- Conservation and Management of Wetlands in Pandihing Bird Sanctuary of
Sibsagar District, Assam
Abstract: Conservation and Management of Wetlands in Pandihing Bird Sanctuary of Sibsagar District, Assam
Author Shukla AcharjeeNitashree Mil
Wetlands are the most common and integral feature of the fluvial landscape of Assam. The wetlands are locally known as “Beel”, “Jolah”, “Pitoni” etc. The beels in Assam are water bodies of different size and shapes, generally connected to the rivers the Brahmaputra, Barak and their tributaries. Panidihing Bird Sanctuary of Sibsagar district is very rich in wetland ecosystem. The wetlands play a vital role in the creation of good ecosystem balance and in maintaining healthy environmental condition of the area. In spite of their well recognized importance, the wetlands of Panidihing area presently suffer from degeneration and ecodegradation. These wetlands at present, however constitute a fast disappearing habitat in the Panidihing area. In this paper, an attempt is made to highlight the severity of the wetlands as sanctuary and provides a framework for the better management of the sanctuary.
- Determination of Acrylamide in Water with Static Injection
Abstract: Determination of Acrylamide in Water with Static Injection Chemiluminescence Method
Author Shouhua CaiJing SunXiaoling Yan
In this work, multiple regression analysis was carried out via experiments and data analysis to attain the optimal reacting conditions of the KMnO4-H2SO4-Na2SO3 chemiluminescence system for acrylamide concentration detection through static injection analysis, i.e. KMnO4:3.8×10-4 mol/L; Na2SO3:1.8×10-3 mol/L; H2SO4:3.6×10-2 mol/L. In addition, the correlation and the linear regression equation of acrylamide concentration and relative luminous intensity were obtained under the optimal reacting conditions.
- Methods of Extraction of Precious Metals from High Carbon Rock
Abstract: Methods of Extraction of Precious Metals from High Carbon Rock
Author Evgenii I. MedvedevVladimir P. MolchanovMihail A. Medko
Manifestations of regional uglerodizatsii in the etamorphicc-omplex are Riphean age of the northern part of Khankaisky terrane. Using various methods of physicochemical analysis reveals elevated concentrations (10-4-10-6 wt.%) of gold and platinum group lements (PGE) in all petrographic varieties of rocks of this complex. According to x-ray fluorescence analysis of described a wide range of geochemically different types of rare and traceelements: Ti, V, Ni, Cr, Pt, Pd, Re, Rh, Os, Ir, Cu, Hg and Au, Ag, Ta, Nb, Sr, Rb, Zr, La, W, Sn, Pb, Zn has been distinguished . In this connection, the development of technique of extracting of gold and platinum group metals from high-carbon rock off the Khankaisky area, is very important.
- Methodological Aspects of Assessment of Potential Toxic Pollution of
Hydrosphere and Environment by Mining Industry Objects
Abstract: Methodological Aspects of Assessment of Potential Toxic Pollution of Hydrosphere and Environment by Mining Industry Objects
Author Igor’ V. KemkinRaisa A. Kemkin
The article discusses questions related to the integrated use of mineralogo-geochemical research methods of ore deposits under exploration and mathematical modeling of behavior of ore minerals in the hypergene zone for qualitative and quantitative assessment of potential ecological threat of pollution by toxic elements, that is one aspect of reducing risk of technogenic disasters related to the mining activities of human.
- Inferential Sensors for Emission Monitoring: an Industrial Perspective
Abstract: Inferential Sensors for Emission Monitoring: an Industrial Perspective
Author Gregorio CiarloNunzio Bonavit
Industrial plants, to comply with environmental regulation, have to monitor, store and report emission data. The traditional and most performing approach, and therefore the most applied one, is represented by the Continuous Emission Monitoring Systems (CEMS), where a continuous stream of data is acquired by rapid-response instruments, displayed in real-time and stored for archiving and reporting purposes. However in the last years advanced modeling technologies have made available a powerful complement to the hardware based analyzers which are the heart of most CEMS. Modeling technologies can provide strong support to existing emission management systems, by means of what is known as a Predictive Emission Monitoring System (PEMS). These systems do not measure emissions through any hardware device, but use computer models to predict emission concentrations on the ground of process data (e.g. fuel flow, load, and ambient air temperature). They actually represent a relevant application arena for the so-called Inferential Sensor technology which has quickly proved to be invaluable in modern process automation and optimization strategies. While lots of applications prove that software systems provide accuracy comparable to that of hardware-based CEMS, virtual analyzers are able to offer additional features and capabilities which are often not properly considered by end-users. Depending on local regulations and constraints, PEMS can be exploited either as primary source of emission monitoring or as an enhancement to hardware-based CEMS. The present paper aims at providing feedback from industrial field experience related to both the approaches. Lessons learnt at two large projects in O&G Production and Refinery will be used as examples which justify the quickly growing confidence on this modern and efficient technology.
- Influence of Hard Water Ions on the Growth of Salmonella in Poultry
Abstract: Influence of Hard Water Ions on the Growth of Salmonella in Poultry Processing Water
Author Ronald Holse
The influence of magnesium and calcium ions in process water on the growth of Salmonella was evaluated and related to the contamination in process wastewater. Salmonella typhimurium was grown in the laboratory and exposed to 500 mg/kg and 1000 mg/kg of magnesium and calcium ions to simulate hard process water. Growth curves exhibited a lag time that measured the inhibitory influence of these ions. Results were compared to the application of trisodium phosphate solutions commonly used as a disinfectant. Exposure to hard water ions showed antimicrobial activity toward S. typhimurium comparable to treatment with 5% trisodium phosphate. This is significant to poultry washing and chilling operations where process water directly contacts poultry carcasses and becomes contaminated with pathogenic bacteria transferred into process wastewater.
- Estimation and Analysis of Carbon Emissions in Hubei Province Based on
Abstract: Estimation and Analysis of Carbon Emissions in Hubei Province Based on Energy Consumption
Author Yanping HouYinrong Che
Hubei Province is at its 12th-Five Year Plan development stage with accelerating urbanization and new industrialization, which is surely driving the increase of energy consumption. Therefore, it is extremely important, in the broad background of calling for low carbon development from the world wide, that economic development is achieved and carbon emissions is reduced at the same time. This study was aimed to learn about the current situation of carbon emission from energy consumption in Hubei Province, China and give suggestions on related policies. In this study, industrial space was first classified into 3 groups of agricultural space, living and industrial-commercial space and transportation industrial space. Then, carbon emission from energy consumption was estimated using the method I of IPCC. The results showed that living and industrial-commercial land use imposed the biggest pressure on the environment in Hubei Province, followed by transportation industrial land use and then agricultural production land use. Although carbon emission from energy consumption is effectively controlled to some extent when economy is developed in Hubei Province, energy dependence has not been changed.