生物炭负载铁酸锰对水溶液中对氨基苯胂酸的吸附  

ADSORPTION PERFORMANCE OF P-ARSANILIC ACID IN AQUEOUS SOLUTION BY BIOCHAR SUPPORTED MANGANESE FERRATE

作　　者：李培培 周雨舟 向宇佳 周耀渝[1] 朱红梅[1] 荣湘民[1] LI Pei-pei;ZHOU Yu-zhou;XIANG Yu-jia;ZHOU Yao-yu;ZHU Hong-mei;RONG Xiang-min(College of Resources and Environment,Hunan Agricultural University,Changsha 410128,China)

机构地区：[1]湖南农业大学资源环境学院

出　　处：《环境工程》2020年第1期75-79,86,共6页Environmental Engineering

基　　金：青年科学基金项目(51709103)

摘　　要：以酒糟、一水合硫酸锰(MnSO 4·H 2O)和六水三氯化铁(FeCl 3·6H 2O)作为原料,采用共沉淀法制备阿散酸吸附剂MFB-MCs。对MFB-MCs进行SEM和TEM分析和表征,并考察了溶液初始pH值、吸附剂量、温度和时间对阿散酸吸附效果的影响。结果表明:MFB-MCs能够有效吸附水溶液中阿散酸;溶液初始pH对MFB-MCs吸附水中阿散酸的影响较大,在pH值为2.0,吸附剂量为1 g/L,温度为25℃,吸附时间为1440 min,阿散酸初始浓度为20 mg/L时,其去除率达到82.27%;MFB-MCs对阿散酸的吸附过程符合伪二级动力学模型,主要受化学吸附控制;同时符合Fredundlich等温线模型,属于多层吸附。The p-arsanilic acid adsorbent MFB-MCs was prepared by co-precipitation method with vinasse,manganese sulfate monohydrate(MnSO 4·H 2O)and ferric chloride hexahydrate(FeCl 3·6H 2O)as the raw materials.The SEM and TEM analysis and characterization of MFB-MCs were carried out.The effects of initial solution pH,adsorption dose,temperature and time on the adsorption of p-arsanilic acid were investigated.The results showed that MFB-MCs could effectively remove the p-arsanilic acid in aqueous solution;the influences of initial pH on adsorption process of MFB-MCs to p-arsanilic acid in water was greater.With the condition of temperature of 25℃,initial solution pH of 2.0,the adsorption dose of 1 g/L,after 1440 minutes adsorption,the removal rate of p-arsanilic acid with initial concentration of 20 mg/L reached 82.27%;the adsorption process of MFB-MCs on p-arsanilic acid conformed to the pseudo-second-order kinetic model,so it was mainly controlled by chemical adsorption.At the same time,the adsorption process conformed to the Freundlich isotherm model,which belonged to multi-layer adsorption process.

关 键 词：生物炭 铁氧体 对氨基苯胂酸 吸附 

分 类 号：X703[环境科学与工程—环境工程]