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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51871

Title: Innovative encapsulated oxygen-releasing beads for bioremediation of BTEX at high concentration in groundwater
Authors: Chi-Wen Lin
Chih-Hung Wu
Pei-Yu Guo
Shih-Hsien Chang
Contributors: 國立臺灣海洋大學:地球科學研究所
Keywords: Encapsulated oxygen-releasing bead
BTEX
Immobilization
Polyvinyl alcohol
Bioremediation
Date: 2017-05
Issue Date: 2019-01-03T02:21:09Z
Publisher: Journal of Environmental Management
Abstract: 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.
Relation: 204(1) pp.12-16
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51871
Appears in Collections:[應用地球科學研究所] 期刊論文

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