National Taiwan Ocean University Institutional Repository:Item 987654321/51841
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题名: Innovative encapsulated oxygen-releasing beads for bioremediation of BTEX at high concentration in groundwater
作者: Lin
Chi-Wen
Chih-Hung Wu
Pei-Yu Guo
Shih-Hsien Chang
贡献者: 國立臺灣海洋大學:地球科學研究所
关键词: Encapsulated oxygen-releasing bead
BTEX
Immobilization
Polyvinyl alcohol
Bioremediation
日期: 2017-12
上传时间: 2018-12-27T03:19:09Z
出版者: Journal of Environmental Management
摘要: Abstract: Both a low concentration of dissolved oxygen and the toxicity of a high concentration of BTEX inhibit the bioremediation of BTEX in groundwater. A novel method of preparing encapsulated oxygen-releasing beads (encap-ORBs) for the biodegradation of BTEX in groundwater was developed. Experimental results show that the integrality and oxygen-releasing capacity of encap-ORBs exceeded those of ORBs. The use of polyvinyl alcohol (PVA) with high M.W. to prepare encap-ORBs improved their integrality. The encap-ORBs effectively released oxygen for 128 days. High concentration of BTEX (480 mg L−1) inhibited the biodegradation by the free cells. Immobilization of degraders in the encap-ORB alleviated the inhibition. Scanning electron microscope analysis reveals that the BTEX degraders grew on the surface of encap-ORB after bioremediation. The above results indicate that the encap-ORBs were effective in the bioremediation of BTEX at high concentration in groundwater.
關聯: 204(1) pp.12-16
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51841
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