###
有色金属(冶炼部分):2022,(2):99-105
←前一篇   |   后一篇→
本文二维码信息
码上扫一扫!
负载二氧化锰的磁性蔗渣炭对铅离子的吸附
秦玲, 关宇霆, 晋刚, 顾珀炜, 粟海锋
(广西大学化学化工学院)
Adsorption of Pb2+ by MnO2-loaded Magnetic Bagasse Carbon
QIN Ling, GUAN Yu-ting, JI Gang, GU Po-wei, SU Hai-feng
(School of Chemistry and Chemical Engineering,Guangxi University)
摘要
图/表
参考文献
相似文献
本文已被:浏览 1656次   下载 1622次
投稿时间:2021-10-26     修订日期:2021-11-02     录用日期:2021-11-08     网络发布日期:2022-01-18
中文摘要: 采用沉淀煅烧—水热法制备了负载二氧化锰的磁性蔗渣炭(MnO2@Fe3O4@SCBC),并通过XRD、FT-IR等对吸附剂进行表征,证明二氧化锰成功负载在Fe3O4@SCBC上。探究了吸附剂质量、初始溶液pH等对MnO2@Fe3O4@SCBC吸附Pb2+的影响,同时,比较研究了Fe3O4@SCBC和MnO2@Fe3O4@SCBC对Pb2+的吸附动力学和热力学。结果表明,在试验条件下,MnO2@Fe3O4@SCBC对Pb2+的吸附量明显优于Fe3O4@SCBC,吸附过程均符合准二级动力学方程和Langmuir等温吸附模型。在吸附时间为10 h、吸附剂质量20 mg、Pb2+初始质量浓度100 mg/L、pH=5.0时,MnO2@Fe3O4@SCBC饱和吸附量为241.33 mg/g。经过10次吸附、脱附试验后,吸附剂仍具有良好的吸附活性及稳定的吸附容量。
中文关键词: 磁性蔗渣炭  二氧化锰  负载  吸附  Pb2+
Abstract:MnO2-loaded magnetic bagasse carbon (MnO2@Fe3O4@SCBC) was fabricated via precipitation calcination method and hydrothermal method. The adsorbent was characterized by XRD and FT-IR to confirm that MnO2 is successfully loaded on Fe3O4@SCBC. Effects of adsorbent quality and initial pH value of solution on adsorption of Pb2+ by MnO2@ Fe3O4@SCBC were investigated. Adsorption dynamics and thermodynamic behaviors of Fe3O4@SCBC and MnO2@Fe3O4@SCBC for Pb2+ were compared. The results show that under the experimental conditions, MnO2@Fe3O4@SCBC displays excellent performance in adsorption capacity towards Pb2+, and the adsorption process is described well by the quasi second-order kinetic equation and Langmuir isothermal adsorption model. The maximum adsorption capacity of MnO2@Fe3O4@SCBC towards Pb2+ is 241.33mg/g under the conditions including adsorption time of 10 h,initial pH value of solution of 5, dosage of adsorbent of 20 mg, and initial concentration of Pb2+ of 100 mg/L. After ten consecutive adsorption-desorption experiments, the adsorbent remains high activity and stable adsorption capacity.
文章编号:     中图分类号:    文献标志码:
基金项目:广西自然科学基金重点项目(2018GXNSFDA281018);广西科技重大专项(桂科AA19182015)
引用文本:
秦玲,关宇霆,晋刚,顾珀炜,粟海锋.负载二氧化锰的磁性蔗渣炭对铅离子的吸附[J].有色金属(冶炼部分),2022(2):99-105.
QIN Ling,GUAN Yu-ting,JI Gang,GU Po-wei,SU Hai-feng.Adsorption of Pb2+ by MnO2-loaded Magnetic Bagasse Carbon[J].Nonferrous Metals (Extractive Metallurgy),2022(2):99-105.

我们一直在努力打
造,精品期刊,传
播学术成果

全国咨询服务热线
86-10-63299752/63299758

联系我们

电话:010-63299752/63299758

传真:010-63299744

QQ:XXXXXXX

Email:ysyl@bgrimm.com

邮编:100160

地址:北京市南四环西路188号总部基地18区23号楼

关注微信公众号