多孔活性炭吸附去除阿散酸的研究  

Study on the removal of Arsanilic acid by adsorption of porous activated carbon

作　　者：陈琼 范洪涛 王赟 马有良[1] 孙挺[2] CHEN Qiong;FAN Hong-tao;WANG Yun;MA You-liang;SUN Ting(Schoel of Science and Chemical Engincering,Ningxia Institute«f Science and Technology,Shizuishan 753000,Ningxia,China;Collrge ol Srience,Northeastern University,Shenyang110819,Liaoning,China;College of Petrochemical Enginerring.Liaoning Petrochemical Uivervitv,Fu-hun 113001,Lisoting,China;College of Erwvironment,ShenyanuUnivensity,Shenyang 110044,Laoming,China)

机构地区：[1]宁夏理工学院理学与化学工程学院,宁夏石嘴山753000 [2]东北大学理学院,辽宁沈阳110819 [3]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [4]沈阳大学环境学院,辽宁沈阳110044

出　　处：《化学研究与应用》2024年第4期841-850,共10页Chemical Research and Application

基　　金：宁夏高等学校科学研究项目(No.NGY2022154)资助;宁夏自然科学基金(2022AAC03340)资助。

摘　　要：阿散酸常被用作饲料添加剂进入动物机体,大部分未被动物机体代谢,会随排泄物进入环境,造成砷污染。本文以榛子壳为原料,用四种活化剂制备了活性炭,经过筛选以ZnCl2为活化剂,600℃下热解制得的多孔活性炭AC(Zn-600)吸附能力最强。当pH=6.0,阿散酸初始浓度为500 mg·L^(-1),接触30min,AC(Zn-600)对阿散酸的饱和吸附量可达131.3 mg·g^(-1),温度升高有利于吸附的发生。AC(Zn-600)中含有较多含氧官能团,存在大量微孔,主要以孔隙吸附、静电、氢键和π-π与阿散酸作用,阿散酸在AC(Zn-600)上的吸附以化学吸附为主,Langmuir等温吸附模型和准一级动力学模型更适合描述吸附过程。Arsanilic acid is common used as feed additive,which enters to animal body and not be metabolized,will flow into the environment with feces,can be caused arsenic pollution.In this paper,hazelnut shell was used as raw material to prepare activated carbon with four kinds of activators.After filtering,AC(Zn-600)has the strongest adsorption capacity which activated by ZnCl2 and pyrolysis at 600℃.When pH=6.0,the initial concentration of Arsanilic acid is 500 mg·L^(-1),contact time is 30 minutes,the saturation adsorption capacity of AC(Zn-600)for Arsanilic acid can reached 131.3 mg·L^(-1),increasing temperature is conducive to adsorption.AC(Zn-600)contains more oxygen-containing functional groups and a large number of micropores,mainly through pore adsorption,electrostatic interaction,hydrogen bonding and-interaction with Arsanilic acid.The adsorption of Arsanilic acid on AC(Zn-600)is mainly chemisorption,Langmuir isothermal adsorption model and Pseudo-first-order kinetic model are more suitable to describe the adsorption process.

关 键 词：榛子壳 多孔活性炭 吸附 阿散酸 

分 类 号：O614.4[理学—无机化学]