黄原酸化凹凸棒土对甲基橙的脱除性能研究  

The Research on Xanthate-attapulgite Removal Performance of Methyl Orange

作　　者：李芳蓉[1] 王荣民[2] LI Fangrong;WANG Rongmin(Gansu University of Traditional Chinese Medicine,Pharmacy Department,Dingxi 743000,China;North West Normal University,Chemical Engineering College.Lanzhou 130010,China)

机构地区：[1]甘肃中医药大学药学教学部,定西743000 [2]西北师范大学化学化工学院,兰州730070

出　　处：《内蒙古农业大学学报（自然科学版）》2022年第1期114-120,共7页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家自然科学基金项目(21865030);甘肃省教育科学“十三五”规划项目(GS[2019]GHB2150);甘肃中医药大学定西校区校级教改重点项目(JGZD201903)。

摘　　要：黄原酸化改性凹凸棒土制备得黄原酸化凹凸棒土(XA)。以X射线衍射(XRD)分析和扫描电镜(SEM)分析其表征结构,结果表明黄原酸化改性成功;XA应用于对甲基橙(MO)模拟废水,对MO具有良好的脱除性能。采用单因素试验得到其最佳脱除条件:在室温、自然pH(5.10~6.20)、MO模拟废水的初始质量浓度ρ;=300 mg·L^(-1)、XA的加入量为m=3.0 g·L^(-1)、振荡吸附时间t=30 min的条件下,甲基橙的脱色率R高达99.83%,处理后废水中MO残余质量浓度ρ_(e)=0.510 0 mg·L^(-1),达到国家排放标准,且处理后沉降快速,固液分离简便。Attapulgite was modified by using wet process and xanthate-attapulgite(XA)has been prepared. Characterized by XRD and SEM analysis,the result shows that the XA has been synthesized successfully. XA has good adsorption effect on methyl orange.Through the single factor study,which obtained the optimum experimental conditions:at R. T.,pH=5.10~6.20,methyl orange initial mass concentration of 300 mg/L,the dosage of XA is 3.0 g/L,contact time is 30 min. under the conditions of adsorption and the removal rate of methyl orange be achieved 99.83%,the residual concentration of methyl orange is 0.510 0 mg/L,can meet the national discharge standards. For a description of methyl orange by XA is more typical of the monolayer adsorption,and the adsorption is easy. Its prominent advantages are simple and fast post-processing of solid-liquid separation.

关 键 词：凹凸棒土 黄原酸基凹凸棒土 甲基橙 脱除性能 

分 类 号：X703[环境科学与工程—环境工程]