期刊
BIORESOURCE TECHNOLOGY
卷 129, 期 -, 页码 485-494出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.11.111
关键词
Moving bed sequencing batch reactor; Polyurethane foam cubes; Simultaneous 4-chlorophenol and nitrogen removal; Packing volume; Batch experiment
资金
- Universiti Sains Malaysia under the Research University (RU) [1001/PKIMIA/814149]
- USM Fellowship Scheme
- MyBrain 15 (MyPhD) programme
Moving bed sequencing batch reactors (MBSBRs) packed with 8% (v/v) of 8-, 27- and 64-mL polyurethane (PU) foam cubes, respectively, were investigated for simultaneous 4-chlorophenol (4-CP) and nitrogen removal at increasing 4-CP concentration. When the 4-CP concentration exceeded 300 mg L-1, the MBSBR with 27-mL foam cubes was observed to outperform the other MBSBRs in removing 4-CP and nitrogen. The reasons were: (I) there were more biomass in inner layer of the 27-mL cubes, compared to that of the 8-mL cubes, which was more shielded from the inhibitory effect of 4-CP and (2) the 27-mL cubes were more mobile than the 64-mL cubes. Although increasing 4-CP concentration to 600 mg L-1 resulted in incomplete removal of 4-CP in the MBSBRs, results of the batch reactor with 27-mL foam cubes showed that complete 4-CP removal within the REACT period could be achieved by increasing the packing volume to 20%. (C) 2012 Elsevier Ltd. All rights reserved.
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