期刊论文

Ding, D.

中文

环境科学学报

0253-2468

2012

32

10

2384-2393

10.13671/j.hjkxxb.2012.10.013

国家自然科学基金项目（No.50774047）； 湖南省科技厅重点项目（No.2010GK2025）； 湖南省教育厅重点项目（No.10A103）~~；

本校为第一且通讯机构

先后采用盐酸羟胺和紫外光辐射,对绳状青霉(Penicillium funiculosum)进行诱变,并用红外光谱分析了诱变绳状青霉细胞表面官能团的变化,采用静态吸附试验研究了铀溶液的pH、温度、初始铀浓度、吸附时间、菌体投加量等因素对其吸附铀的影响.通过对动力学模型、等温吸附模型和热力学方程进行拟合,研究了诱变绳状青霉吸附铀的行为.采用扫描电镜、能谱仪和红外光谱仪分析了吸附前后诱变绳状青霉细胞表面的形貌、化学组成和官能团结构的变化,进而探讨了吸附过程可能涉及的反应机理.结果表明,诱变绳状青霉在pH=6时吸附铀的效果最好,8h即达到吸附平衡,最大吸附量为200mg·g~(-1),对铀的吸附为细胞表面的...

Penicillin funiculosum was mutated by hydroxyl-ammonium chloride and ultraviolet radiation in succession, and the alterations of functional groups on the surfaces of the dead cells of the mutated Penicillin funiculosum were analyzed by FTIR. Static experiments were conducted on the effects of pH, temperature, initial concentration of uranium, contact time and dosage on the biosorption of uranium from aqueous solutions by the mutated Penicillin funiculosum. The biosorption performances of the mutated Penicillin funiculosum for uranium were inves...