期刊论文

Peng, Guo-Wen(pgwnh@sohu.com)

中文

中国有色金属学报

1004-0609

2016

26

7

1568-1575

10.19476/j.ysxb.1004.0609.2016.07.027

Project supported by the Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation,China 国家自然科学基金资助项目 湖南省科技厅项目 Projects 长沙理工大学电力与交通材料保护湖南省重点实验室开放基金资助项目

本校为第一且通讯机构

为了解决耐辐射奇球菌(DR)容易以悬浮态生长,菌体与水的密度差较小,吸附铀后难以分离等问题,首先使用氯化亚砜对羧基化磁性纳米Fe_3O_4粒子进行酰氯功能化,以此作为DR菌固定载体,再与二乙烯三胺化学修饰的DR菌进行固定化,得到一种新型功能化磁性耐辐射奇球菌吸附剂NFGDR,并通过红外光谱仪和扫描电镜分别表征吸附剂NFGDR的结构。考察溶液pH值、吸附时间、铀初始浓度和吸附剂投加量等因素对吸附剂NFGDR吸附铀的影响,对吸附动力学模型和吸附等温模型进行分析。结果表明:吸附剂NFGDR表面具有大量吸附铀的基团,吸附铀后表面形态发生变化;吸附铀的最佳条件是pH值为5、吸附时间为80 min、铀初始浓度为1...

In order to solve the problems such as Deinococcus radiodurans (DR) growing in a suspended state, the small difference between the bacteria density and the water density, and the hard separation after uranium adsorption, the novel functional magnetic Deinococcus radiodurans adsorbent NFGDR was prepared. At first, the carboxylation magnetic Fe3O4nanoparticle was chloride functionalization using sulfoxide chloride, and it was immobilized with the chemical modification DR using Diethylenetriamine as the magnetic carrier. FT-IR and SEM were used to characterize NFGDR, and the effects of pH value, ...