松塔基炭材料的制备及其对Zn^(2+)的吸附性能研究  

Preparation of pine cone-based carbon material and its adsorption properties for zinc ion

作　　者：张栋[1,2] 武瑞燕 李倩文[2] 刘丽艳[2] 马丽春[2] 曹俊岩[2] 安富强[1,2] 焦纬洲[1] 

机构地区：[1]中北大学超重力化工过程山西省重点实验室,山西太原030051 [2]中北大学理学院,山西太原030051

出　　处：《应用化工》2017年第1期19-24,28,共7页Applied Chemical Industry

基　　金：国家青年科学基金资助项目(5110423);国际科技合作计划资助项目(2011DFA51980);山西省国际科技合作计划资助项目(2015081043);山西省科技攻关资助项目(20140313002-4);超重力化工过程山西省重点实验室开放基金项目(CZL201501))

摘　　要：以松塔为原料,通过碱活化、炭化制得了一系列含氮松塔基炭材料。采用静态法研究了炭材料对Zn^(2+)的吸附性能。结果表明,松塔基炭材料AC_(PC-400-3)、AC_(PC-700-3)的比表面积分别为306.78,718.1 m^2/g,平均孔径分别为2.29,2.09 nm。AC_(PC-400-3)的吸附过程符合二级动力学方程,而AC_(PC-700-3)则符合颗粒内扩散模型。AC_(PC-400-3)对Zn^(2+)的吸附量达到42.95 mg/g。等温吸附数据符合Freundlich方程,炭材料对锌离子的吸附属于单分子层吸附,吸附容量在一定范围内随温度、pH升高而增大。另外,AC_(PC-4 00-3)具有较好的再生与重复使用性能。A series of activated carbon materials was prepared using pine cone as raw material activated by alkali and carbonized. The adsorption properties of various carbon materials were studied by static method. The results showed that the specific surface areas of AC（PC-400-3） and ACPC-700-3are 306. 78 m^2/ g and718. 1 m^2/ g,and the average pore diameters are 2. 29 nm and 2. 09 nm,respectively. The adsorption process of AC（PC-400-3） towards Zn^2＋could be well described by the second order reaction,and the adsorption process of AC（PC-700-3） could be well described by the particle diffusion model. The adsorption capacity of AC（PC-400-3） towards Zn^2＋could reach 42. 95 mg/g. The adsorption data could be well described by the Freundlich equation. This indicated that the adsorption is a monolayer adsorption. The adsorption capacity increases with the increase of temperature and p H in studied range. Additional,ACPC-400-3has better regeneration and reusable performance.

关 键 词：炭材料 松塔 吸附 锌离子 

分 类 号：TQ127.1[化学工程—无机化工] O647.33[理学—物理化学]