氯化铁改性椰壳活性炭去除2,4-二氯苯酚的吸附性能研究  

Adsorption Performance of FeCl_(3) Modified Coconut Shell Activated Carbon for the Removal of 2,4-Dichlorophenol

作　　者：刘雪平[1] 闫晓乐 张焕 张瀚月 田丽 宋忠贤 毛艳丽[1] 张霞[1] 延旭 康海彦[1] LIU Xue-ping;YAN Xiao-le;ZHANG Huan;ZHANG Han-yue;TIAN Li;SONG Zhong-xian;MAO Yan-li;ZHANG Xia;YAN Xu;KANG Hai-yan(Henan Key Laboratory of Water Pollution Control and Rehabilitation,Henan University of Urban Construction,Pingdingshan 467000,China)

机构地区：[1]河南城建学院河南省水体污染与防治重点实验室,河南平顶山467000

出　　处：《化学试剂》2022年第6期835-840,共6页Chemical Reagents

基　　金：河南科技攻关项目(202102310280,212102310068,202102310287)。

摘　　要：以椰壳活性炭为原料,进行氯化铁改性,探究其对2,4-二氯苯酚吸附性能影响的研究。通过静态吸附实验得到了最佳改性条件,使得对2,4-二氯苯酚吸附性能进一步得到提升,并结合实际水体酸碱性探究,对模拟废水实验进行了pH探究,进一步优化了材料对实际水体的适用性。研究表明,氯化铁浓度为0.8 mol/L、改性时间为24 h条件下改性得到的炭材料(BC-F)吸附性能最佳,吸附剂的最佳使用量应为0.04 g,吸附过程应在弱酸或碱性环境中进行,在实际水体中实用性较好;且该吸附过程符合准一级动力学和Freundlich等温吸附方程,以化学吸附为主。In this study,ferric chloride-modified coconut shell-derived activated carbon(AC)was prepared,the effect of ferric chloride modification on the adsorption performance of 2,4-dichlorophenol was investigated.The optimum modification conditions were obtained through static adsorption experiments,which significantly improved the adsorption performance of 2,4-dichlorophenol.The pH of the simulated wastewater experiment was also investigated in combination with the acidity and alkalinity of actual wastewater to further optimize the applicability of the as-modified material.This study presented that the best adsorption performance of ferric chloride-modified AC was obtained with a dosage of 0.8 mol/L ferric chloride concentration and a modification time of 24 h;also,the adsorption process was suggested to be carried out in a weakly acidic or alkaline environment,which was close to the practical condition in the actual wastewater.Furthermore,the adsorption process was testified to conform to the quasi-level kinetics and Freundlich isothermal adsorption equation that was governed by chemisorption.

关 键 词：椰壳活性炭 氯化铁改性 吸附 2 4-二氯苯酚 动力学 

分 类 号：X703[环境科学与工程—环境工程]