標題: Versatility of fluorene metabolite (phenol) in fluorene biodegradation by a sulfate reducing culture
作者: Kumar, Mathava
Liao, Wei-Chih
Tsai, Jen-Chieh
Lin, Jih-Gaw
環境工程研究所
Institute of Environmental Engineering
關鍵字: Fluorene;Biodegradation;Sulfate-reducing culture;Central composite design;Phenol;Versatility
公開日期: 1-Jun-2011
摘要: Biodegradability of fluorene and the versatility of fluorene metabolite (i.e. phenol) in fluorene biodegradation by a sulfate-reducing enrichment culture were investigated. Batch experiments (with 5 mg l(-1) fluorene) were designed via the central composite design to examine the effects of sulfate (5-35 mM) and biomass (5-50 mg l(-1)) concentrations (variables) on fluorene degradation (response). The experimental results revealed that fluorene removal was more influenced by the biomass concentration than the sulfate concentration. The optimal sulfate and biomass concentrations for fluorene biodegradation (90% removal) were found to be 14.4 mM and 37.8 mg l(-1), respectively. Under the optimal conditions, a set of biodegradation experiments were repeated to evaluate both the biodegradability of fluorene metabolite and the potential effect of phenol accumulation on fluorene degradation. The outcomes indicated a slow phenol degradation rate, i.e. 0.02 mg l(-1) d(-1). Moreover, a small reduction in the fluorene biodegradation efficiency was observed in the presence and accumulation of phenol. However, this sulfate reducing culture is a valuable resource for the simultaneous degradation of fluorene and phenol. (C) 2011 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ibiod.2011.02.003
http://hdl.handle.net/11536/23367
ISSN: 0964-8305
DOI: 10.1016/j.ibiod.2011.02.003
期刊: INTERNATIONAL BIODETERIORATION & BIODEGRADATION
Volume: 65
Issue: 3
起始頁: 522
結束頁: 526
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