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Microbial fuel cells (MFCs) and electrocoagulation cells (ECCs) are two emerging technologies in the treatment of wastewater. The integration between MFCs and ECCs has not been reported yet. This work studied the ability to couple MFCs with an ECC to form an integrated system for wastewater treatment. Two types of wastewater were examined: synthetic wastewater containing a mixture of glucose and soluble...
In this study, bacteria and methanogens involved in the decomposition of dairy cattle manure have been characterized via cultivation on selective microbiological media by the viable plate count technique. In addition, DNA was extracted from digested samples, and the 16S rRNA gene was amplified using six primer sets specific to bacterial and archaeal domain via PCR. The sequences of the PCR products...
Population characteristics of Unio crassus, an endangered freshwater mussel in many countries, are very important. In this study, we have attempted to determine the environmental conditions of Aydın-Çine Creek and the biometric properties of U.crassus. The largest length during the study period was 92.50 mm in February, and the smallest length was 37.03 mm in April. In addition, the heaviest individual...
The existing waste management system in the Republic of Moldova is still in a developing stage and it faces some serious problems. Therefore, this research focuses on examination the waste management situation in Moldovan rural and urban areas. It describes challenges connected to Moldovan waste management such as unauthorized landfills, illegal dumps or insufficient public services. However, the...
This study developed the hybrid partial-nitrification and anammox (HPNA) reactor to increase efficiency in ammonia nitrogen (NH₄⁺-N) removal. The HPNA reactor contained a fixed bed filled with biofilm carrier and a fluidized bed with mechanical stirrer to maximize withholding the sludge. The reactor achieved a total nitrogen (TN) removal efficiency of 70% and NH₄⁺-N removal efficiency of 84%. The...
The rise in the human population is a major factor contributing toward increased environmental contamination. Rampant industrialization and urbanization has resulted in the discharge of hazardous materials in the environment, making it unfit for life. Inorganic pollutants accumulate themselves in edible or non-edible parts of the cultivated crops and as a result they become part of the food chain...
The forests of the eastern Black Sea in Turkey are populated by Oriental spruce (Picea orientalis (L.) Link.), a heterogeneous species in terms of the quality of wood. Oriental spruce forests have been managed and used for lumbering in lack of consideration of the homogeneity of the trees. Furthermore, it is necessary to know what kinds of Oriental spruce have been found and which of them produce...
We studied the anti-cold shock performance of activated sludge microbes (ASM) with magnetic field (MF) strengthening under slow and rapid cooling and rewarming. From stage S3 to S4, the TTC-DHA (triphenyltetrazolium chloride dehydrogenase) of reactor A₂ and B₂ were 98.5% and 72.5% higher than that of reactor A₁ and B₁, which showed that MF had a better strengthening effect on TTC-DHA under slow temperature...
Our paper presents the possibility of applying the DRASTIC model as a useful tool to support the process of local and regional development planning. The study was carried out in the catchment of Stare Miasto Reservoir in Central Poland. In order to plan the policy to protect the reservoir and groundwater, the assessment of groundwater vulnerability to pollution was made by means of the DRASTIC model...
Mining and processing of metal ores are often significant sources of heavy metal contamination of river sediments. Heavy metal contamination of river sediments resulting from mining and smelting represents a major concern due to the potential risk involved. This study was performed to investigate the content of heavy metal (Cd, Cr, Fe, Mn, Ni, Cu, Pb, Hg, As, and Ba) cations in the sediments of the...
The flash flood early warning method based on dynamic critical precipitation is proposed, which takes into account the percentage saturation of soil moisture content in double-excess model. A series of historical precipitation data of various gauge stations in the upper catchment of the study area at the early warning cross-section are set as the input parameters, thereby the runoff generation and...
Phytochelatins are known to play an essential role in xenobiotic detoxification in some plants. Until now, their synthesis in plants exposed to platinum group elements (PGEs), especially Pd and Rh, has not been directly proven. The influence of PGEs on the natural environment, especially on living organisms, is particularly important in view of increasing emissions of these elements from automotive...
Based on coastline, water depth, and remote sensing image data of Sanmen Bay over the past 50 years, this research analyzed quantitatively coastline temporal-spatial evolution characteristics and underwater topography evolution characteristics. The results showed that the total coastline length of Sanmen Bay first decreased and then increased during the last 50 years. The most obvious change of total...
In karst areas, in order to ascertain the relationship between soil active organic carbon fractions and soil nutrient elements, topsoil samples (the sampling points were set at 80-m intervals) were collected for the analysis of soil physicochemical properties. In the sampling area, land use was divided into upland, paddy, and shrub land. The results showed that dissolved organic C (DOC) and microbial...
This study investigates the effects of bird droppings on mercury pollution levels in soil, specifically on the speciation and total concentration of mercury (Hg) in soil from Tongli Wetland, East China. Thirty soil samples and four bird dropping samples were collected from Tongli Wetland along with fifteen eggshells and five feathers from Heron Branch birds. Results indicated that bird droppings affect...
In this study, tri-butyl-phosphate (TBP)-kerosene is used as the extraction solvent to remove phenols from coal gasification wastewater, and the complex mechanism of the extraction is investigated. An effect experiment is conducted to determine the complex structures, the enthalpy change of reaction, and the effect of extraction solvent concentration and temperature on the distribution coefficient...
Aiming at China’s “2030 target,” and given the key role of industrial sectors in CO₂ emission reduction, this paper selects the path of allocating carbon emission allowance among different industrial sectors. By selecting CO₂ accumulation emissions, the industry-added value and the CO₂ emission efficiency which is calculated by the super-SBM model, a carbon intensity distribution model has been established...
Phthalates represent endocrine disrupting chemicals, with harmful effect on the hormonal balance of the human body. Food is a substantial source of exposure to phthalates. The aim of study was to investigate association between phthalate exposure of children and their parents from Slovakia (children n = 51, parents n = 27) and their consumer practices. We analysed urine samples by high performance...
Arid and semi-arid zones frequently present salinity problems in soils. The agriculture of the municipality of Ahome, Sinaloa has an agricultural region where its soils are characterized by problems of salinity and sodicity – conditions that reduce production. Salinity can be detected by implementing remote sensing techniques; there are ways to enhance the detection of satellite salinity through the...
The dramatic growth in urbanization and population in Riyadh, Saudi Arabia have brought some environmental challenges that need to be efficiently dealt with. One of these challenges is finding the proper management for hugely produced municipal solid wastes (MSW). Recycling of MSW via composting is a possible option of its management and has recently received more attention, although compost ability...
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