Bioremediation of petroleum hydrocarbon contaminated soil: Effects of strategies and microbial community shift

Pao Wen Grace Liu, Tsung Chain Chang, Liang Ming Whang, Chun Hsuan Kao, Po Tseng Pan, Sheng Shung Cheng

研究成果: Article同行評審

151 引文 斯高帕斯(Scopus)

摘要

Biodegradation of petroleum hydrocarbon oil (14,000 mg kg-1) were investigated in six biopiles batches, differing in the remediation strategy: bioaugmentation (selected consortium and kitchen waste were introduced), biostimulation (added with rhamnolipid, high-level, or low-level nutrient), and bioaugmentation plus biostimulation (added both with rhamnolipid and bacterial consortia). After the 140-day operation, the kitchen waste (KW) and the low-level nutrient (NEL) batches achieved the highest total petroleum hydrocarbon degradation efficiency (>80%). The result of the hydrocarbon analysis revealed that the bioaugmentation approaches were the most effective ones in removing aromatic component (64% and 68%), and KW and NEL were the only two approaches that can remove the polar component with positive efficiency, 11% and 21%, respectively. The terminal-restriction fragment length polymorphism percentage (T-RFLP) abundance applied with nonmetric multidimensional scaling indicated a similarity of the bacterial communities during the early fastest remediation stage. The results of the oligonucleotide array targeting the ribosomal internal transcribed spacer (ITS) region, along with the hydrocarbon fractional analysis, indicated a successive degradation completed by the bacterial-fungi consortia. Before Day 70, the bacterial community was dominant in decomposing the saturated and partially aromatic hydrocarbons. After Day 70, the fungal community found to be dynamic and responsible for degradation of the polar hydrocarbons composing of recalcitrant metabolites.

原文English
頁(從 - 到)1119-1127
頁數9
期刊International Biodeterioration and Biodegradation
65
發行號8
DOIs
出版狀態Published - 2011 12月

All Science Journal Classification (ASJC) codes

  • 微生物學
  • 生物材料
  • 廢物管理和處置

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