Critical factors for enhancing the bioremediation of a toxic pollutant at high concentrations in groundwater: Toxicity evaluation, degrader tolerance, and microbial community

doi:10.1016/j.jenvman.2020.111487

中山醫學大學機構典藏 CSMUIR > 中山醫學大學研究成果 > 期刊論文 > Item 310902500/23945

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题名:	Critical factors for enhancing the bioremediation of a toxic pollutant at high concentrations in groundwater: Toxicity evaluation, degrader tolerance, and microbial community
作者:	Lin, CW;Liu, SH;Wu, CF;Chang, SH
关键词:	Bioremediation;H2O2;Biotoxicity;Sulfolane degrader;DGGE
日期:	2021
上传时间:	2022-08-05T09:45:22Z (UTC)
出版者:	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
ISSN:	0301-4797
摘要:	Groundwater near refinery and natural gas plants often contain elevated concentrations of toxic sulfolane. Studies on any concentration of sulfolane are limited. Column experiment was conducted to investigate the effects of adding a low dose of H2O2 and nutrient on bioremediation. Vibrio fischeri light inhibition test was used evaluate the toxicity of effluents. The continuous column experiment conditions were sulfolane at 100 mg L-1, dissolved oxygen at 7 mg L-1, absence of phosphorus, and very short hydraulic retention time (7.9 h). A low dose of H2O2 (5.88 mM) enhanced the sulfolane (27.1%) and COD removal (11.8%) in comparison with the control set. Adding nutrient increased bicinchoninic acid protein assay levels, sulfolane removal (99.6%) and COD removal (80.3%). Addition of both H2O2 and nutrient further improved COD removal (90.3%) and COD/sulfolane ratio (0.90) and toxicity removal (Vibrio fischeri light inhibition ratio < 1%). Batch experiment indicated the degraders tolerated sulfolane up to 400 mg L-1. The DGGE method and dendrogram analysis were utilized to investigate the changes of degrader community structure.
URI:	http://dx.doi.org/10.1016/j.jenvman.2020.111487 https://www.webofscience.com/wos/woscc/full-record/WOS:000593975000003 https://ir.csmu.edu.tw:8080/handle/310902500/23945
關聯:	JOURNAL OF ENVIRONMENTAL MANAGEMENT ,2021,v277
显示于类别:	[中山醫學大學研究成果] 期刊論文

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