期刊论文

中文

原子能科学技术

1000-6931

2015

49

1

26-33

10.7538/yzk.2014.youxian.0007

11175081:国家自然科学基金 21177053:国家自然科学基金 51408293:国家自然科学基金 2013432110003:高等学校博士学科点专项科研基金 13K085:湖南省高校创新平台资助项目 13K086:湖南省高校创新平台资助项目

本校为第一机构

通过驯化培养得到了以硫酸盐还原菌（S RB ）为优势菌属的活性颗粒污泥，研究了微氧条件（氧浓度为0.6～1.0 mg／L）下其对废水中U（Ⅵ）的去除性能，利用傅里叶红外光谱（FTIR）、扫描电镜（SEM ）和X射线能谱（EDS ）分析了其对U （Ⅵ）的去除机理，采用连续提取法考察了铀在颗粒污泥上的沉积形态。实验结果表明，微氧条件下SRB颗粒污泥结合并转化U （Ⅵ）的过程主要分为两步：初期（前30 min）吸附和后期微生物还原沉淀作用，SRB颗粒污泥对U（Ⅵ）的去除率达98.89％。FTIR、SEM 和EDS分析表明，颗粒污泥表层上酰胺基、羧基、羟基、磷酸基等均参与了对U （Ⅵ）的沉积，同时 Na^＋、M g^2＋等与...

The bioremediation behavior and mechanism of sulfate reducing bacteria (SRB) granular sludge which was artificially domesticated were studied. U(VI) removal by SRB granular sludge was investigated under micro-aerobic condition with the concentration of oxygen 0.6-1.0 mg/L, then the removal mechanism was analyzed with FTIR, SEM and EDS, and finally the deposit morphology of uranium was studied with the sequential extraction procedure. The results show that U(VI) removal by SRB granular sludge mainly occurs following a 2-step process which is initial adsorption(the first 30 min) and microbial re...