活性炭纤维负载钙的制备及其对铅的吸附性能  

Preparation of activated carbon fiber loaded with calcium adsorbent and its adsorption propreties of Pb(Ⅱ)

作　　者：赵越[1] 徐红波[1] 李嫚[1] 朱晓林[2] 

机构地区：[1]辽宁科技大学化学工程学院,辽宁鞍山114051 [2]辽宁科技大学工商管理学院,辽宁鞍山114051

出　　处：《辽宁科技大学学报》2015年第6期423-429,共7页Journal of University of Science and Technology Liaoning

基　　金：辽宁省教育厅科学研究基金项目(L2015262);鞍山市科技计划项目基金资助(201308)

摘　　要：研究活性炭纤维负载Ca(Ⅱ)盐(Ca-ACF)吸附剂的制备及其对Pb(Ⅱ)的吸附性能。文中考察了ACF的比表面积、溶液pH值、吸附剂用量、负载Ca(Ⅱ)盐的种类与浓度等因素对Pb(Ⅱ)吸附性能的影响。结果表明,比表面积为1 500 m2/g的活性炭纤维负载0.25 mol/L CaCl2时,活性炭纤维对Pb(Ⅱ)的吸附效果最好,其对Pb(Ⅱ)的吸附行为符合Langmuir吸附等温模型。当p H值为6、吸附剂加入量为0.2 mg/m L,静态饱和吸附容量达到201.25 mg/g,重复使用时性能稳定,具有处理含Pb(Ⅱ)废水的应用前景。Activated carbon fiber loaded with Ca（Ⅱ ） （Ca-ACF） adsorbent was prepared, and its adsorption propreties of Pb （ Ⅱ ） were studied. The effects of various parameters such as specific surface area of ACF, solution pH, dosage of adsorbent, the species of loaded and concentration with Ca （Ⅱ ） on the adsorption pro- preties of Pb （ Ⅱ） were assessed. The results showed that elected with a specific surface area of 1 500 m^2/g of ACF loaded with 0.25 mol/L of CaC12 had better Pb（ Ⅱ ） adsorption efficiency. Equilibrium data ofPb（ Ⅱ ） ad- sorption fitted well with Langmuir isotherm model. When adsorbent dosage was 0.2 mg/mL and at pH 6, the maximum static adsorption capacity of the sorbem for Pb（ Ⅱ ） was 201.25 mg/g. The sorbent showed good stability and reusability for Pb （ Ⅱ ）. The sorbent can potentially be used for the treatment of waste water containing Pb（ Ⅱ ）.

关 键 词：活性炭纤维 Ca(Ⅱ)盐 吸附 铅 

分 类 号：O643[理学—物理化学] X52[理学—化学]