腐殖质还原菌去除U(Ⅵ)的试验研究  

Study on Removal U(Ⅵ) by Humic-reducing Bacteria

作　　者：顾中华[1] 谢水波[1,2] 刘迎九[1] 刘金香[2] 李仕友[2] 

机构地区：[1]南华大学污染控制与资源化技术湖南省高校重点实验室,湖南衡阳421001 [2]南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2013年第1期42-45,52,共5页Journal of University of South China：Science and Technology

基　　金：国家自然科学基金资助项目(11175081);湖南省科技计划重点基金资助项目(2011SK2015)

摘　　要：试验探讨了腐殖质还原菌去除U(Ⅵ)的特性与效果,重点考察了温度、pH、AQS、U(Ⅵ)浓度等因素对腐殖质还原菌去除U(Ⅵ)的影响.试验结果表明,腐殖质还原菌对低浓度U(Ⅵ)有很好的去除效果,其去除U(Ⅵ)的最适温度为30℃左右,最佳pH在6.0左右,AQS的最佳用量约为1.0 mmol/L.红外光谱分析表明,羧基、酰胺基和磷酸基团是腐殖质还原菌除铀过程中占主导地位的官能团.The characteristics and performance of the humic-reducing bacteria （HRB） to remove U （ VI ） in wastewater were examined. The impact of temperature, pH values, AQS, electron donor sodium lactate and U （ VI ） concentrations was studied. Experimental results showed that HRB was efficent to remove low concentration U （ VI ）. The optimum reduction U （VI） condition was that temperature was about 30 ℃, pH was about 6.0, AQS was about 1.0 mmol/L. The IR spectroscopic analysis suggested that carboxyl, amide and phosphate groups of humic-reducing cell were the dominant functional groups involved in bacteria-uranium interaction.

关 键 词：U(Ⅵ) 腐殖质还原菌 蒽醌-2-磺酸钠 生物修复 

分 类 号：X771[环境科学与工程—环境工程]