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论文类型：期刊论文

发表时间：2011-04-15

发表刊物：JOURNAL OF MEMBRANE SCIENCE

收录刊物：Scopus、SCIE、EI

卷号：372

期号：1-2

页面范围：322-330

ISSN号：0376-7388

关键字：VOCs; HFMR; Toluene; TCE

摘要：Contamination of air by volatile organic components (VOCs) is a serious health concern in the present industrial age. To address this issue, a study was devoted to the development of a hollow fiber membrane bioreactor (HMBR), where microorganisms immobilized on the outside of a polyvinylidene fluoride (PVDF) membrane contribute to removing toluene and trichloroethylene (ICE) from air passing through the filter. Waste gas containing toluene and TCE as contaminants was passed through the membrane and shifted to a liquid phase. The performance of fibrous-bed biofilm was evaluated with toluene as carbon source. After over 9 months of continuous operation, long-term performance was demonstrated. The hollow fiber membrane provided a large gas-liquid interface which enabled the efficient removal of the pollutants. Under inlet concentrations of 450-2400 mg m(-3) for toluene and 100-160 mg m(-3) for TCE, the maximum elimination capacity of toluene and TCE were 0.275 g m(-2) h(-1) and 0.0016 g m(-2) h(-1), corresponding to a volumetric of toluene membrane removal rate of 1479 g m(-3) h(-1) and 8.5 g m(-3) h(-1), respectively. During the experiments, 95% of toluene as well as 22.1% of TCE removal efficient were observed. No intermediate products such as dichloroethylenes (DCE) and vinyl chloride (VC) were detected during cometablism. Overall, the feasibility of sustained higher anaerobic biotreatment of toluene and TCE in a HFMR was approved. (C) 2011 Elsevier B.V. All rights reserved.