Bio-F生物吸附剂对水中铁锰的去除与特性

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491和380 mgg. 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>005). 较高的c(Ca2+)和c(Mg2+)可明显抑制Bio-F去除Fe2+和Mn2+的能力（P<005)，但高c(PO₄3-)则可促进该吸附过程（P>005). Bio-F经10次再生后对Fe2+和Mn2+的去除率分别达9727%和9467%. Bio-F无毒安全，采用Bio-F处理高铁锰饮用水具有应用潜力. 

Iron and Manganese Removal from Water by Bioadsorbent Bio-F

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(P>0.05).The removal rates of Fe2+ and Mn2+ were significantly inhibited by Ca2+ and Mg2+ at high concentrations(P>0.05).In contrast,the removal rates were enhanced by PO43-(P>0.05).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.