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| Study on oil-containing wastewater treatment using microorganisms immobilized by wood crumbs |
| GUO Jing-yi, YIN Hua, PENG Hui, YE Jin-shao, ZHANG Na, WANG Hui-xia, LU Xian-yan |
| Department of Environmental Engineering, Jinan University, Guangzhou 510632, China |
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Abstract Microorganism QK-1 was immobilized on wood crumbs and the effect of crude oil removal from aqueous solution by the immobilized QK-1 was tested. The removal rate of the crude oil by the immobilized QK-1 was higher than that by only QK-1 or the mixture of QK-1 and wood crumbs. The removal rate was 75.5~94.3% when the crude oil concentration was 10.0~30.0 g·L-1, and the optimum strain dosage was 15.0 g·L-1(dry weight). The results indicated that the culture medium was a crucial factor in oil removal, especially carbon and nitrogen contents. The optimum composition of immobilized culture medium was as follows:sucrose, 10.0 g·L-1; barmene, 6.0 g·L-1; yeast extract, 1.5 g·L-1; pH 8.0.
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Received: 25 April 2005
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