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| The effect of cadmium on phosphate removal by immobilized Chlorella |
| LI Ding-Jian1, VAN Guo-An2, XU Ming-Fang3, CAO Huang-Sheng1 |
| 1. Instiute of Hydrobiology, Jinan University, Guangzhou 510632, China; 2. Department of Environmental Science, Wuhan University, Wuhan 430072, China; 3. Department of Bioengineering, Jinan University, Guangzhou 510632, China |
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Abstract The effect of cadmium on phosphate removal from settled domestic wastewater by Chlorella vulgaris entrapped in cadmium alginate was studied under different light intensities and different pH, and the experiment was employed in laboratory. The result showed that, 1)the effect of cadmium on algal phosphate removal varied from day to day, and peaked in the first day; 2)under some conditions, the content of phosphate removed increased when cadmium was added, however, cadmium inhibited the uptake of phosphate by algae generally; and 3) the treatment of immobilization to algae smoothed the disruption of cadmium. In the next experiment, more attention should be paid to conduct research in the relationship between light intensities/pH and cadmium.
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Received: 25 February 2003
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