榛壳吸附剂对铅离子和亚甲基蓝吸附性能研究  

Study on the adsorption of Pb(Ⅱ) and methylene blue by hazelnut shell powder

作　　者：吕琳琳[1,2] 姜效军[1] 姜爽[2] 郭宏伟[2] 刁全平[2] 贾莲[2] 

机构地区：[1]辽宁科技大学化学工程学院,鞍山114051 [2]鞍山师范学院化学与生命科学学院,鞍山114007

出　　处：《化工新型材料》2017年第8期196-197,201,共3页New Chemical Materials

基　　金：辽宁省博士研究基金项目(20141124);鞍山市科技局高端人才培养计划资助项目(20153473)

摘　　要：榛子壳中富含纤维素、半纤维素、木质素,非常适合用来吸附水体中的阳离子。为了深入研究榛子壳粉吸附剂对阳离子的吸附机制,以铅离子(Pb^(2+))和阳离子染料亚甲基蓝(MB)为例,研究了在榛子壳粉吸附剂吸附Pb^(2+)和MB的动力学吸附特性、等温吸附特性,并进行了热力学分析。研究结果表明准二级吸附动力学方程非常适合拟合榛子壳粉吸附剂对Pb^(2+)和MB的吸附过程,榛子壳粉吸附剂吸附Pb^(2+)和MB的最大吸附量分别为65.02mg/g和46.28mg/g。榛子壳粉吸附剂吸附Pb^(2+)的过程为放热过程,吸附MB的过程为吸热过程。The hazelnut shell waste with rich in cellulose,hemicellulose and lignin is very suitable for the adsorption of positive ion in the water.In order to study the adsorption mechanism of hazelnut shell powder on positive ion,Pb（Ⅱ） and cationic dye methylene blue（MB）used as an example.The kinetic adsorption properties and isothermal adsorption property of Pb（Ⅱ） and MB in hazelnut shell powder were studied,and the thermodynamic analysis was carried out.The results showed that the pseudo-second-order model was suitable for the adsorption of Pb（Ⅱ） and MB on HS,and the maximum adsorption capacities of Pb（Ⅱ） and MB were 65.02mg/g and 46.28mg/g,respectively.The process of hazelnut shell powder adsorbent of Pb（Ⅱ） was an exothermic process,and the process of hazelnut shell powder adsorbent of methylene blue was an endothermic process.

关 键 词：榛子壳 生物吸附 Pb(Ⅱ) 亚甲基蓝 吸附动力学 

分 类 号：O647.3[理学—物理化学] X703[理学—化学]