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: | 1-六月-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 |
顯示於類別: | 期刊論文 |