Bio-F生物吸附剂对水中铁锰的去除与特性  

Iron and Manganese Removal from Water by Bioadsorbent Bio-F

作　　者：赵良元[1] 朱迟[1] 蒋金辉[1] 杨娇艳[1] 赵进[1] 杨劭[1] 

机构地区：[1]华中师范大学生命科学学院,湖北武汉430079

出　　处：《环境科学研究》2012年第4期425-430,共6页Research of Environmental Sciences

基　　金：国家水利部948项目(200731);中央高校科研基本业务费(CCNU09A01027);国家自然科学基金项目(30900054)

摘　　要：以Bio-F(Bio-F生物吸附剂)为材料,研究其对水中Fe2+和Mn2+的去除能力与特性.结果表明,Bio-F可同时去除水中Fe2+和Mn2+且吸附过程符合Lagergren一级动力学模型.Langmuir吸附等温线能较好地描述Bio-F吸附Fe2+和Mn2+的过程,表现为单分子层化学优惠吸附,其对Fe2+和Mn2+的最大饱和吸附量分别达4.91和3.80 mg/g.Bio-F对Fe2+和Mn2+的吸附为吸热反应且在pH 6～7范围内可保持86%以上吸附能力(P>0.05).较高的c(Ca2+)和c(Mg2+)可明显抑制Bio-F去除Fe2+和Mn2+的能力(P<0.05),但高c(PO43-)则可促进该吸附过程(P>0.05).Bio-F经10次再生后对Fe2+和Mn2+的去除率分别达97.27%和94.67%.Bio-F无毒安全,采用Bio-F处理高铁锰饮用水具有应用潜力.The adsorption capabilities and characteristics of Fe2＋ and Mn2＋ in water by a new bioadsorbent（Bio-F） were studied.It was found that Bio-F could effectively remove Fe2＋ and Mn2＋ simultaneously from water via adsorption,and the adsorption kinetics data fitted the Lagergren first-order equation.The adsorption process of Fe2＋ and Mn2＋ removal could be described by the Langmuir adsorption isotherm.The maximum adsorption capacities for Fe2＋ and Mn2＋ were 4.91 and 3.80 mgg respectively,and the adsorption process was an endothermic process.The removal rates of Fe2＋ and Mn2＋ were maintained above 86% at pH 6-7（P0.05）.The removal rates of Fe2＋ and Mn2＋ were significantly inhibited by Ca2＋ and Mg2＋ at high concentrations（P0.05）.In contrast,the removal rates were enhanced by PO43-（P0.05）.The removal rates reached 97.27% for Fe2＋ and 94.67% for Mn2＋ after ten regenerations.Since Bio-F is non-toxic,the results indicated that Bio-F could be potentially applied for Fe2＋ and Mn2＋ removal from drinking water in rural areas.

关 键 词：铁 锰 Bio-F 吸附 

分 类 号：X704[环境科学与工程—环境工程]