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The presence of significant amounts of heavy metals in industrial sludge poses a severe threat to the environment and human health. In this study, bioleaching of heavy metals from electroplating industrial sludge was investigated using indigenous Acidithiobacillus ferrooxidans as the bacterial agent. The effect of sludge loading on the efficiency of heavy metal removal by bioleaching was studied....
The discharge of high flood water (2010) into reservoirs located in the Upper Vistula River catchment and into the overloaded Vistula River channel may strongly affect water and sediment quality. To investigate the contamination of the flooded area in the center of Cracow, total of 32 sediment samples were collected along the length of the Vistula River and also from the cross section in the floodplain...
We can observe new reasons for improving water protection policies: climate change calls for higher security for drinking water sources, increasing demand for improving water quality for swimming purposes in recreational areas, higher pressure on responsibility for water quality crossing national borders. Our paper presents an application of combinatorial auction theory to the problem of cleaning...
One hundred strains of Gram-negative bacteria were isolated from a brackish water Lagoon, Küçükçekmece in Istanbul-Turkey. Identification studies showed that 31% of the isolated bacteria were Escherichia coli, 28% were Citrobacter, and 12% were Enterobacter. Antibiotic and heavy metal resistances exhibited by these bacteria were evaluated. In antibiotic susceptibility tests, 68% of the isolates appeared...
In order to explore the composition characteristics and distribution pattern of organic carbon (OC) in river sediments, river sediments and riverbank soils were sampled from upstream to downstream of the Majia and Tuhai rivers in northern China, and then determined for heavy fraction organic carbon (HFOC) and light fraction organic carbon (LFOC). Results showed that the HFOC had a significant correlation...
In converting cropland to grassland and forest, more carbon is sequestered in grassland soil and forest biomass, but the mitigation of global warming potential (GWP) is not clear. In this study, we use the longterm conversion from cropland to grassland (28 y) and forest (14 y) to comprehensively assess the impact on GWP of soil carbon (C), nitrogen (N), CO₂, and N₂O emissions. The results showed that...
The use of organic residues and waste for production of biogas as an energy source is a viable option for waste management and reduction of greenhouse gas emissions. However, before any eventual utilization of biogas, hydrogen sulfide (H₂S) and carbon dioxide (CO₂) must be removed since those contaminants are highly undesirable in combustion systems. This work deals with the construction and examination...
Ecological risks of heavy metal toxicity such as Cd, Cu, Pb, Zn, Cr, As, and Hg through crops (wheat and rice) grown in the Tianjin sewage irrigation area in northern China were studied in this paper. Wheat and rice samples as well as related soil samples from 77 select blocks were collected. The second grade of standards for Tianjin soil environmental quality was used for soil risk assessment. Chinese...
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