Abstract:Distribution of MC-LR during the extraction of phycocyanin was studied. A microcystin-degrading strain was immobilized by activated carbon fiber (ACF), and the effect factors, such as the pretreatment methods of activated carbon fiber, dosage of activated carbon fiber, pH value, temperature and the initial concentration of MC-LR were investigated. The results showed that 81.2% of MC-LR existed in the ultrafiltrate during the phycocyanin extraction. The immobilized strain presented significantly better performance in MC-LR removal than the non-immobilized strain. The performance of ACF which was pretreated with (1+9) HCl was much better than others. The optimum removal conditions were as follows: dosage of activated carbon fiber was 10g/L, the temperature was 35℃, the pH value was 8.0, and the initial concentration of MC-LR was 13.6mg/L. Therefore, immobilized strain showed a certain tolerance towards the pH value and the temperature. And MC-LR could be removed effectively in the range of pH5 to pH9, 10℃~35℃.
袁媛, 吴涓, 李玉成, 王宁. 活性炭纤维固定化菌对微囊藻毒素MC-LR的去除研究[J]. 中国环境科学, 2014, 34(2): 403-409.
YUAN Yuan, WU Juan, LI Yu-Cheng, WANG Ning. Removal of microcystin-LR by a microcystin-degrading strain immobilized by activated carbon fiber. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(2): 403-409.