改性活性炭纤维的制备及对重金属吸附性能的研究  

Preparation of modified activated carbon fiber and the adsorption properties for heavy metals

作　　者：成悦 季伟伟 邵敏 万玉山 CHENG Yue;JI Weiwei;SHAO Min;WAN Yushan(Changzhou University School of Environmental and Safety Engineering,Changzhou 213164,China)

机构地区：[1]常州大学环境与安全工程学院,江苏常州213164

出　　处：《工业水处理》2023年第5期114-121,共8页Industrial Water Treatment

基　　金：江苏省研究生科研与实践创新计划(SJCX21_1263)。

摘　　要：通过氢氧化钠-高温煅烧法对活性炭纤维(ACF)进行复合改性,制备出改性活性炭纤维ACF-Na-HT,利用扫描电镜(SEM)、红外光谱(FTIR)、X射线衍射(XRD)等分析手段对改性前后的ACF进行表征。采用ACF-Na-HT对含镉废水进行吸附处理,利用批量实验对不同的影响因素进行探究,并对吸附过程进行热力学及动力学研究。结果表明,ACF-Na-HT对含镉废水的Cd^(2+)去除率可达到98%,Cd^(2+)吸附量为17.7 mg/g,且吸附过程符合Lang?muir等温吸附模型和准二级吸附动力学模型。Modified activated carbon fiber ACF-Na-HT was prepared by composite modification of activated carbon fiber(ACF)with sodium hydroxide and high temperature calcination.The activated carbon fiber before and after modification was characterized by SEM,FTIR and XRD.Adsorption of heavy metal cadmium contaminated wastewater was studied by ACF-Na-HT,different influencing factors were investigated by batch experiments,and thermodynamics and kinetics of adsorption were studied.The results showed that the removal rate of ACF-Na-HT from heavy metal cadmium contaminated wastewater could reach 98%and the adsorption capacity was 17.7 mg/g.The adsorption process is in line with Langmuir isothermal adsorption model and quasi second-order adsorption kinetic model.

关 键 词：活性炭纤维 改性 吸附 镉 

分 类 号：X703.1[环境科学与工程—环境工程]