MnO2改性硅藻土对Pb2+的吸附研究
Journal: Ecological Environment and Protection DOI: 10.12238/eep.v3i10.1076
Abstract
制备了MnO2改性硅藻土,探究了对含Pb2+废水的吸附性能,用XRD、FITR、N2吸附脱附和零电荷点等手段进行表征,考察其预吸附、pH因素、吸附剂用量、动力学、温度、浓度变化和解吸对Pb2+的吸附效果影响变化。结果表明：pH为4.00、吸附剂用量为0.05g、平衡时间30min,环境温度35℃时MnO2改性硅藻土对100mg/L含铅废水吸附效果最好,最大吸附量为85.26 mg/g；吸附过程符合准二级动力学方程和Freundlich模型,经Dubinin-Radushkevich模型计算,吸附机理属于化学吸附；用0.5mol/LHCl解吸效果最好。
Keywords
硅藻土；MnO2；Pb2+；吸附
Full Text
PDF - Viewed/Downloaded: 0 TimesIndexation
Download Index RecordReferences
[1] 赵丽红,李素霞,柯滨,等.铅污染现状及其修复机理研究进展[J].武汉工程学院学报,2006,2(1):43-46.
[2] 门彬,王东升.重金属废水处理方法综述[J].水工业市场,2011,(8):65-68.
[3] M.Aivalioti,I.Vamvasakis,E.Gidarakos, BTEX and MTBE adsorption onto raw and thermally modified diatomite
[4] Bayat B. Combined removal of zinc(II)and cadmium(II)from aqueous solution by adsorption onto high-calcium
[5] 丁社光.硅藻土对铅离子的静态吸附实验研究[J].重庆工商大学学报：自然科学版,2007,24(1):51-55.
[6] Al-Ghouti,M,Mhraisheh,S.Allen,et al. The removal of dyes from textile wastewater: a study of the physical characteristics and adsorption mechan
[7] 王宝民,宋凯,韩瑜.硅藻土资源的综合利用研究[J].材料导报:纳米于新材料专辑,2017,25(2):468-469.
[8] 杨哲斌.硅藻土在建筑装饰工程或家庭装修中的应用现状[J].中国建筑科技,2014,(2):18-20.
[9] 李国昌,王萍.硅藻土的扩容处理及其在复合材料中的应用研究[J].中国非金属矿工业导刊,2000,14(2):19-20.
[2] 门彬,王东升.重金属废水处理方法综述[J].水工业市场,2011,(8):65-68.
[3] M.Aivalioti,I.Vamvasakis,E.Gidarakos, BTEX and MTBE adsorption onto raw and thermally modified diatomite
[4] Bayat B. Combined removal of zinc(II)and cadmium(II)from aqueous solution by adsorption onto high-calcium
[5] 丁社光.硅藻土对铅离子的静态吸附实验研究[J].重庆工商大学学报：自然科学版,2007,24(1):51-55.
[6] Al-Ghouti,M,Mhraisheh,S.Allen,et al. The removal of dyes from textile wastewater: a study of the physical characteristics and adsorption mechan
[7] 王宝民,宋凯,韩瑜.硅藻土资源的综合利用研究[J].材料导报:纳米于新材料专辑,2017,25(2):468-469.
[8] 杨哲斌.硅藻土在建筑装饰工程或家庭装修中的应用现状[J].中国建筑科技,2014,(2):18-20.
[9] 李国昌,王萍.硅藻土的扩容处理及其在复合材料中的应用研究[J].中国非金属矿工业导刊,2000,14(2):19-20.
Copyright © 2020 谢茜, 周晓军
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License