活性炭负载亚铁离子去除水中溴酸盐研究  

REMOVAL OF BROMATE FROM WATER USING FERROUS ION SUPPORTED ON ACTIVATED CARBON

作　　者：唐敏康[1] 肖爱红[1] 许建红[2] 高乃云[2] 陈苹[1] 

机构地区：[1]江西理工大学,江西赣州341000 [2]同济大学,上海200092

出　　处：《水处理技术》2015年第5期58-62,共5页Technology of Water Treatment

基　　金：国家自然科学基金项目(51208364;51178321)

摘　　要：采用浸润法制备活性炭负载亚铁离子复合材料(GAC-Fe(II)),并利用扫描电镜(SEM)对负载不同铁含量的GAC-Fe(II)进行表征。考察了不同反应条件下GAC-Fe(II)对Br O3-的去除效率,并探讨其去除机理。结果表明,在铁的质量分数为1.222%时材料对Br O3-的去除最佳,去除率为99%;吸附等温实验表明,Langmuir模型能更好地描述其对Br O3-的等温吸附过程;Br O3-的去除率在弱酸性及中性条件下较好;吸附动力学实验表明,GAC-Fe(1.222%)对Br O3-的反应过程更符合准2级吸附动力学方程;机理分析表明,GAC-Fe(1.222%)对Br O3-的去除包括吸附和还原2种机制,80%的Br O3-被GAC-Fe(II)还原为无毒的Br-。Ferrous ion supported on activated carbon（GAC-Fe（II）） was synthesized by infiltration method, and the different iron contents of the GACFe（II） were characterized by scanning electron microscopy（SEM）. The removal of Br O3-with GAC-Fe（II） under different reaction conditions and its removal mechanisms were assessed. The results showed that the removal of Br O3-was best when the mass fraction of iron was 1.222% and removal rate was 99%; adsorption isotherm experiments showed that the isothermal adsorption of Br O3-process could be described well by the Langmuir model; the removal rate of Br O3-under the condition of weak acid and neutral was relatively high. Adsorption kinetics experiments showed that the reaction process of Br O3-removal by GAC-Fe（1.222%） was in line with the secondary adsorption dynamics equation; mechanism analysis showed that the Br O3-removal by GAC-Fe（1.222%） included two mechanisms： adsorption and reduction, and 80% of Br O3-was reduced to innocuous Br-by GAC-Fe（II）.

关 键 词：活性炭 亚铁离子 溴酸盐 还原 吸附动力学 

分 类 号：X703.1[环境科学与工程—环境工程]