Effects of compost stability and contaminant concentration on the bioremediation of PAHs-contaminated soil through composting

Bioremediation of heavily hydrocarbon-contaminated drilling wastes by composting

“…In fact, several authors report higher hydrocarbon degradation rates, particularly of PAHs, at mesophilic (25-45°C) than at thermophilic temperatures. This would be associated with the variety of microorganisms, and the proper functioning of the enzymatic systems related to the degradation of target compounds, within mesophilic temperature range (Van Gestel et al 2003;Antizar-Ladislao et al 2004Sayara et al 2010).…”

“…Finally, it should be made clear that, since several authors reported that hydrocarbon losses due to volatilization were not significant with respect to biological degradation (2-5 % of the initial concentration) (Namkoong et al 2002;Hesnawi and McCartney 2006;Sayara et al 2010), it was not considered necessary to measure abiotic hydrocarbon losses, in order to assess the actual composting impacting factors in drilling cuttings hydrocarbons removal efficiency.…”

Analysis of Jet Fuel for the Judgment of Soil Polluter

“…석유의 생성원리는 정확하게 밝혀지지는 않았지만 유기생명체들이 지하에 묻혀 오랜 기간 동안 분해되어 현재의 석유형태로 전환되었다 고 유추하고 있다 [4]. 다시 말하면 수백, 수십만 년의 오랜 생성기간을 통해 안정한 형태의 탄화수소화합물로 전환되었기 때문에, 누유사고 시, 석유가 분해되기까지 상당한 시간이 요구된다 [5].…”

The effects of white-rot fungi Trametes versicolor and Bjerkandera adusta on microbial community structure and functional genes during the bioaugmentation process following biostimulation practice of petroleum contaminated soil

“…Fungi are robust organisms and more tolerant than bacteria to high concentrations of contaminants and they have been used extensively for bioremediation purpose from nineteen century (Ti sma and Zeli, 2010). Despite some challenges with using bioaugmentation, the use of fungi has received more consideration since the fungi can be easily incorporated by soil structure (Sayara et al, 2010). Furthermore, they can grow in low nutrient, humidity and pH conditions (Mollea et al, 2005).…”

“…These fungi are well-known for their ligninolytic activities in nature (Pointing, 2001;Han et al, 2004). However, with their non-specific enzyme system, whiterot fungi are able to decompose different compounds including PAHs (Sayara et al, 2010). Various members of white-rot fungi have been used for treatment of PAHs-contaminated soil through bioaugmentation process (Mohan et al, 2008;Acevedo et al, 2011;Ting et al, 2011).…”