期刊
BIORESOURCE TECHNOLOGY
卷 139, 期 -, 页码 87-93出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.04.037
关键词
Tetrahydrofuran; Biodegradation; Immobilization; Activated carbon fiber; Packed-bed reactor
资金
- National Science Foundation of China [20907043]
- National High Technology Research and Development Program of China [2012AA063102]
- Zhejiang Provincial Natural Science Foundation [Y4100339]
A novel entrapment matrix, calcium alginate (CA) coupled with activated carbon fiber (ACF), was prepared to immobilize Pseudomonas oleovorans DT4 for degrading tetrahydrofuran (THF). The addition of 1.5% ACF increased the adsorption capacity of the immobilized bead, thus resulting in an enhanced average removal rate of 30.3 mg/(L h). The synergism between adsorption and biodegradation was observed in the hybrid CA-ACF beads instead of in the system comprising CA beads and freely suspended ACF. The effective diffusion coefficient of the CA-ACF bead was not significantly affected by bead size, but the bead's value of 1.14 x 10(-6) cm(2)/s (for the bead diameter of 0.4 cm) was larger than that of the CA bead by almost one order of magnitude based on the intraparticle diffusion-reaction kinetics analysis. Continuous treatment of the THF-containing wastewater was succeeded by CA-ACF immobilized cells in a packed-bed reactor for 54 d with a >90% removal efficiency. (C) 2013 Elsevier Ltd. All rights reserved.
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