摘要
采用溶胶-凝胶法,以秸秆活性炭、聚乙烯醇(PVA)和九水合硝酸铁为原料,成功制备了活性炭负载氢氧化铁复合吸附材料(活性炭负载(Fe(OH)_3),以XRD、SEM等表征手段对所得材料的形貌、组成及结构进行了表征。结果表明,通过溶胶-凝胶及低温煅烧,纳米级Fe(OH)_3粒子均匀分散在活性炭表面,而Fe(OH)_3的随负载量是影响复合吸附剂的重要影响因素。吸附实验结果表明,活性炭负载Fe(OH)3复合吸附剂对磷具有良好的去除效果,Fe(OH)_3的最佳负载量为5.6%,其最高吸附量可达5.56 mg/g。吸附等温线符合Freundlich等温吸附模式,且复合吸附剂对磷元素的吸附为优惠型吸附。
A sol-gel method for preparing Fe（OH）3 @ activated carbon was established. XRD analysis showed that the activated carbon was modified by Fe（ OH）3. SEM analysis exhibited that Fe（OH）3 particles distributed homogeneously on the surface of the activated carbon. BET surface area of composition absorbent varied with the Fe（OH）3 content. The experiment of phosphorus adsorption stated that the best adsorption capability was 5. 56 mg / g when the content of Fe（ H）3 was 5. 6%. The adsorption of phosphorus fitter Freundlich isotherm model.
出处
《实验室研究与探索》
CAS
北大核心
2016年第4期22-25,共4页
Research and Exploration In Laboratory
基金
浙江省环保厅支持项目(2013B016)
关键词
氢氧化铁
秸秆
活性炭
磷吸附
复合吸附剂
Fe（OH）＋3
rice stalk
activated carbon
phosphorus absorption
composition absorbent
