Comparative Bioremediation of Petroleum Hydrocarbon-Contaminated Soil by Biostimulation, Bioaugmentation and Surfactant Addition  

作　　者：Elise A. Asquith Phillip M. Geary Annette L. Nolan Craig A. Evans 

机构地区：[1]School of Environmental and Life Sciences, The University of Newcastle, NSW 2308, Australia [2]Enviropacific Services PrY Ltd., NSW 2297, Australia

出　　处：《Journal of Environmental Science and Engineering(A)》2012年第5期637-650,共14页环境科学与工程（A）

摘　　要：A bench-scale biopiling experiment was conducted to hydrocarbon bioremediation in a chronically contaminated soil compare the ability of different techniques to enhance petroleum After 195 days, 10%-32% removal of TPHs （total petroleum hydrocarbons） occurred in unamended soil （control）. Biostimulation by inorganic nutrient addition enhanced TPH removal （49%） confirming that bioremediation was nutrient limited and the soil contained a well-adapted hydrocarbonoclastic microbial community. The addition of organic amendments including green waste at 25% and 50% （w/w） and a commercial product called DaramendTM had a further biostimulatory effect （50%-66%, 34%-59% and 69%-80% TPH removal respectively）. Bioaugmentation using two commercially available petroleum hydrocarbon degrading microbial cultures with nutrients enhanced TPH removal in the case of RemActivTM （60%-69%）, but had a marginal effect using Recycler 102 （49%-55%）. The effect of a non-ionic surfactant in green waste amended soil was variable （52%-72% TPH reduction）, but its potential to enhance biodegradation presumably by promoting contaminant bioavailability was demonstrated. High degradation of artificially added polycyclic aromatic hydrocarbons （PAHs） occurred after 106 days （75%-84%）, but significant differences between the control and treatments were unapparent, suggesting that spiked soils do not reflect the behavior of contaminants in genuinely polluted and weathered soil.

关 键 词：BIOREMEDIATION petroleum hydrocarbons BIOAUGMENTATION BIOSTIMULATION surfactant. 

分 类 号：X55[环境科学与工程—环境工程] TQ423.2[化学工程]