污泥-锯末混合ZnCl2活化制备活性炭

吴东强 马培勇  胡淞 邢献军 张贤文

doi:10.12034/j.issn.1009-606X.217400

过程工程学报 >

2018 , Vol. 18 >Issue 4: 792 - 798

DOI: https://doi.org/10.12034/j.issn.1009-606X.217400

材料工程

污泥-锯末混合ZnCl₂活化制备活性炭

吴东强马培勇胡淞邢献军张贤文

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1. 合肥工业大学汽车与交通工程学院，安徽合肥 230009
2. 合肥工业大学机械工程学院，安徽合肥 230009
3. 合肥工业大学先进能源技术与装备研究院，安徽合肥 230009
4. 安徽省环境保护产业发展促进会，安徽合肥 230000

收稿日期: 2017-11-16

修回日期: 2018-01-16

网络出版日期: 2018-08-15

基金资助

国家自然科学基金项目

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Preparation of activated carbon from sludge and sawdust with ZnCl₂ as activator

Dongqiang WU Peiyong MA Song HU Xianjun XING Xianwen ZHANG

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1. School of Automobile and Transportation Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
2. School of Mechanical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
3. Institute of Advanced Energy Technology & Equipment, Hefei University of Technology, Hefei, Anhui 230009, China
4. Anhui Province Environmental Protection Industry Development Association, Hefei, Anhui 230000, China

Received date: 2017-11-16

Revised date: 2018-01-16

Online published: 2018-08-15

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摘要

以城市污水厂二沉池污泥为主要原料、固体ZnCl2为活化剂，添加一定量锯末，在高温管式炉中采用化学活化法制备污泥活性炭，通过单因素实验考察了锯末添加率、盐料比、活化温度、活化时间对污泥活性炭吸附性能的影响. 结果表明，锯末添加量为20%、盐料质量比为2.0、活化温度为550℃、活化时间为15 min时，所得活性炭碘吸附性能最优，达679.25 mg/g；污泥活性炭具有发达的孔结构，其比表面积达609.68 m2/g，总孔容为0.51 cm3/g，平均孔径为3.51 nm.

关键词： 污泥; 活性炭; 氯化锌; 干混; 制备; 吸附; 孔隙结构

本文引用格式

吴东强马培勇胡淞邢献军张贤文 . 污泥-锯末混合ZnCl₂活化制备活性炭[J]. 过程工程学报, 2018 , 18(4) : 792 -798 . DOI: 10.12034/j.issn.1009-606X.217400

Abstract

The sludge based activated carbon was prepared by activation of ZnCl2 in a pyrolytic furnace with the sludge from municipal wastewater treatment plants and sawdust. And single factor experiments were conducted to explain the effects of four factors, sawdust addition rate, material salt ratio, activation temperature and activation time, on the adsorption performance of sludge activated carbon. The results showed that the optimum adsorption capacity of activated carbon can reach 679.25 mg/g when the mass fraction of the sawdust in the mixture 20%, the material/salt mass ratio of 2, the activation temperature of 550℃ and the activation time of 15 min, respectively. The sludge activated carbon has developed pore structure, the specific surface area up to 609.68 m2/g, the total pore volume comes to 0.51 cm3/g, and the average pore size is 3.51 nm.

Key words： sludge; activated carbon; zinc chloride; dry mixing; preparation; absorption; pore structure

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