Biodegradation of diesel-contaminated soil: A soil column study

Journal of The Chinese Institute of Chemical Engineers Pub Date : 2008-09-01 DOI:10.1016/j.jcice.2008.03.006

Pao-Wen Grace Liu , Liang-Ming Whang , Ming-Chieh Yang , Sheng-Shung Cheng

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引用次数: 40

Abstract

This study simulated in situ bioremediation for diesel-contaminated soil by a column operation. Several bioremediation approaches were conducted to examine the feasibility. Four lab-scale soil columns were operated specific to the following approaches: nutrient enhancement (NE), bioaugmentation (BA), biostimulation (BS), and sterilized soil (SS). Within 330 days of operation, the residual total petroleum hydrocarbon-diesel (TPH_d) was degraded from 10,290 mg TPH_d/dry soil to 3026, 1851, 4105, and 6506 mg TPH_d/kg dry soil by Columns NE, BA, BS, and SS, respectively. The diesel-degradation efficiency was 67%, 80%, 45%, and 24%, accordingly. Microbial diversity was monitored with molecular biotechnology DGGE. It was found that introduced bacteria CC-CF3 and CC-JG39 become undetectable after 90 days of operation, but another introduced bacteria, CC-RS1, evidently remained with small signals during the last time stage of operation.

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柴油污染土壤的生物降解:土壤柱的研究

本研究模拟了用柱式操作对柴油污染土壤进行原位生物修复。研究了几种生物修复方法的可行性。四种实验室规模的土壤柱分别针对以下方法进行操作:营养增强(NE)，生物增强(BA)，生物刺激(BS)和灭菌土壤(SS)。运行330天内，通过NE、BA、BS和SS柱，将残余总石油烃柴油(TPHd)从10290 mg TPHd/kg干土降解为3026、1851、4105和6506 mg TPHd/kg干土。柴油降解效率分别为67%、80%、45%和24%。利用分子生物技术DGGE监测微生物多样性。结果发现，引入菌CC-CF3和CC-JG39在操作90天后已无法检测到，而另一种引入菌CC-RS1在操作最后阶段仍明显保持小信号。

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Journal of The Chinese Institute of Chemical Engineers

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