Removal of chromium (VI) from aqueous solutions using activated carbon prepared from crofton weed

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	Removal of chromium (VI) from aqueous solutions using activated carbon prepared from crofton weed
	Wang, Ping 1; Zhang, Runhu 2; Hua, Chao 3
刊名	DESALINATION AND WATER TREATMENT
	2013-02-01
卷号	51 期号:10-12 页码:2327-2335
关键词	Chromium(VI) Activated carbon Adsorption Isotherms Thermodynamics Crofton weed
英文摘要	Activated carbon from crofton weed (ACCW) was evaluated for its ability to remove Cr(VI) from aqueous solutions. Batch experiments were used to examine kinetics, adsorption isotherm, pH effect, and thermodynamic parameters. Adsorption data for Cr(VI) uptake by ACCW were analyzed according to Langmuir and Freundlich adsorption models. Thermodynamic parameters for the adsorption system were determinated at 293, 303, and 313K (Delta H degrees = 15.02 kJ mol(-1); Delta G degrees = -0.76 to -2.91 kJ mol(-1), and Delta S degrees = 53.85 JK(-1) mol(-1)). The Delta G degrees values obtained were negative, indicating that the adsorption of Cr(VI) on the surface of ACCW was a spontaneous adsorption process. The kinetics of this process was described very well by a pseudo-second-order rate equation. These results show that the ACCW could be considered as a potential adsorbent for Cr(VI) in aqueous solutions.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Engineering, Chemical ; Water Resources
研究领域[WOS]	Engineering ; Water Resources
关键词[WOS]	WASTE-WATER ; CHEMICAL ACTIVATION ; INDUSTRIAL-WASTE ; METAL IONS ; PART I ; ADSORPTION ; KINETICS ; EQUILIBRIUM ; CR(VI) ; OPTIMIZATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000315491400037
公开日期	2015-05-27
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/13467]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Xidian Univ, Sch Telecommun Engn, State Key Lab Integrated Serv Networks, Xian 710071, Shaanxi, Peoples R China 2.Kunming Met Coll, Dept Chem Engn, Kunming 650033, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ping,Zhang, Runhu,Hua, Chao. Removal of chromium (VI) from aqueous solutions using activated carbon prepared from crofton weed[J]. DESALINATION AND WATER TREATMENT,2013,51(10-12):2327-2335.
APA	Wang, Ping,Zhang, Runhu,&Hua, Chao.(2013).Removal of chromium (VI) from aqueous solutions using activated carbon prepared from crofton weed.DESALINATION AND WATER TREATMENT,51(10-12),2327-2335.
MLA	Wang, Ping,et al."Removal of chromium (VI) from aqueous solutions using activated carbon prepared from crofton weed".DESALINATION AND WATER TREATMENT 51.10-12(2013):2327-2335.