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.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Lin CW,Wu CH,Guo PY,Chang SHdoi
10.1016/j.jenvman.2017.05.035subject
Has Abstractpub_date
2017-12-15 00:00:00pages
12-16issue
Pt 1eissn
0301-4797issn
1095-8630pii
S0301-4797(17)30494-2journal_volume
204pub_type
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