Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO2 and FeOOH

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO2 and FeOOH
	Xu, Wei; Lan, Huachun; Wang, Hongjie; Liu, Hongming; Qu, Jiuhui
刊名	FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
	2015-06
卷号	9 期号:3 页码:385-393
关键词	heavy metals Fe-Mn binary oxide manganese dioxide ferric hydroxide adsorption
英文摘要	The adsorption potential of FMBO, FeOOH, MnO2 for the removal of Cd2+, Cu2+ and Pb2+ in aqueous systems was investigated in this study. Comparing to FMBO and FeOOH, MnO2 offered a much higher removal capacity towards the three metal ions. The maximal adsorption capacity of MnO2 for Cd2+, Cu2+ and Pb2+ were 1.23, 2.25 and 2.60 mmol.g(-1), respectively. And that for FMBO were 0.37, 1.13, and 1.18 mmol.g(-1) and for FeOOH were 0.11, 0.86 and 0.48 mmol.g(-1), respectively. The adsorption behaviors of the three metal ions on the three adsorbents were all significantly affected by pH values and heavy metal removal efficiency increased with pH increased. The Langmuir and Freundlich adsorption models were used to describe the adsorption equilibrium of the three metal ions onto the three adsorbents. Results showed that the adsorption equilibrium data fitted well to Langmuir isotherm and this indicated that adsorption of metal ions occurred on the three metal oxides adsorbents limited to the formation of a monolayer. More negative charged of MnO2 surface than that of FMBO and FeOOH could be ascribed by lower pH(iep) of MnO2 than that of FMBO and FeOOH and this could contribute to more binding sites on MnO2 surface than that of FMBO and FeOOH. The higher metal ions uptake by MnO2 than FMBO and FeOOH could be well explained by the surface charge mechanism.
研究领域[WOS]	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000354270200002
公开日期	2016-03-15
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32744]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Xu, Wei,Lan, Huachun,Wang, Hongjie,et al. Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO2 and FeOOH[J]. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,2015,9(3):385-393.
APA	Xu, Wei,Lan, Huachun,Wang, Hongjie,Liu, Hongming,&Qu, Jiuhui.(2015).Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO2 and FeOOH.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,9(3),385-393.
MLA	Xu, Wei,et al."Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO2 and FeOOH".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 9.3(2015):385-393.