期刊论文

Adsorption of U （ Ⅵ ） by Deinococcus Radiodurans in Water

中文

金属矿山

1001-1250

2014

1

150-153

湖南省教育厅项目（编号:10C1142 2011-2013）； 国家自然科学基金项目（编号:51274124）；

本校为第一机构

为探索治理铀污染的新工艺、新方法,对耐辐射奇球菌吸附铀(Ⅵ)的影响因素进行了研究.结果表明,溶液的pH值、吸附时间和吸附剂投加量对铀去除率影响显著.在含铀(Ⅵ)模拟废水pH =5、吸附时间为180 min、初始浓度为50 mg/L的情况下,投加0.2 g/L的耐辐射奇球菌体吸附剂,铀(Ⅵ)吸附率可达92.30％;随着铀(Ⅵ)初始浓度的提高,铀吸附率微幅下降,吸附量几乎与铀(Ⅵ)浓度成正比.对吸附机理的探讨表明,耐辐射奇球菌对铀(Ⅵ)的吸附行为符合Freundlich等温模型和准二级动力学模型.

The factors influencing adsorption of U （Ⅵ） by Deinococcus radiodurans was studied in order to find out new methods of reducing uranium pollution. The Results showed that pH and adsorption time have significant effect on removal rate of uranium in solution. The removal rate of U （ Ⅵ ） reached 92. 30% with wastewater pH value of 5, adsorption time for 180 mi- nutes,initial concentration of 50 mg/L, and Deinococcus radiodurans dosage of O. 2 g/L. With the increase of U （ Ⅵ ）, initial concentration of uranium adsorption rate decreased sli...