Increasing concerns over health and ecological impacts of contaminated sites are leading to the development of cost effective remediation techniques for reducing the mass, mobility and/or toxicity of contaminated soils and groundwater. Amongst these, in situ chemical oxidation techniques are evolving as an effective way of remediating contaminated soil. In situ chemical oxidation involves the i...

Soil microbial community plays a major role in removal of polycyclic aromatic hydrocarbons (PAHs) from soil, and bioremediation potentially offers an attractive economic approach to the clean-up polluted areas. To evaluate contribution different groups soil PAH degradation, enzymatic activity phospholipid fatty acids (PLFAs) were analysed mesocosm trial three soils (two natural one industrial) ...

Heavy metal/metalloids (HMs) and polycyclic aromatic hydrocarbons (PAHs) in soil have caused serious environmental problems, compromised agriculture quality, detrimental effects on all forms of life including humans. There is a need to develop appropriate effective remediation methods resolve combined contaminated problems. Although conventional technologies exist tackle soils, application bioc...

Arsenic contamination in a large area of agricultural fields on the Guandu Plain of northern Taiwan was confirmed in a survey conducted in 2006, but research concerning the relationship between bioavailable As concentrations in contaminated soils and crop production in Taiwan is not available. Pot experiments were conducted to examine the growth and accumulation of As in four vegetable crops gr...

A potential nitrification rate test (PNR) was used to identify metal toxicity in field-contaminated soils. The test was applied to metal salt-spiked soils, to 27 uncontaminated soils, and to 15 soils that are contaminated by former metal smelting activities. Four agricultural soils (pH 4.5-6.6) were spiked with various rates of CdCl2 (0-200 mg Cd/kg dry wt) or ZnCl2 (0-3,000 mg Cd/kg dry wt) an...

We selected the Guanting Reservoir in Beijing, China as a case where an industrial area locates on the upwind corner to study the influence of human activities and natural processes on the distribution of polycyclic aromatic hydrocarbons (PAHs) in soils. Soil PAH concentrations in the study area follow a log-normal probability distribution function, suggesting that distribution of PAH in soils ...

Contaminated land burdens the economy of many countries and must be dealt with. Researchers have published thousands documents studying developing soil sediment remediation treatments. Amongst targeted pollutants are polycyclic aromatic hydrocarbons (PAHs), described as a class persistent organic compounds, potentially harmful to ecosystems living organisms. The present paper reviews discusses ...

it is known that native oil-degrading microorganisms are ubiquitous. they can be isolated from contaminated soils. in this study, biodegradation experiments were carried out to evaluate the efficiency of pollutant removal by adding the selected microorganisms. five mixed cultures and 3 single bacteria strains, pseudomonas sp., arthrobacter sp. and mycobacterium sp. were isolated from hydrocarbo...

Antarctica is an attractive target for human exploration and scientific investigation, however the negative effects of human activity on this continent are long lasting and can have serious consequences on the native ecosystem. Various areas of Antarctica have been contaminated with diesel fuel, which contains harmful compounds such as heavy metals and polycyclic aromatic hydrocarbons (PAH). Bi...