Removal of chromium (VI) from aqueous solutions using activated carbon prepared from crofton weed | |
Wang, Ping1; Zhang, Runhu2; Hua, Chao3 | |
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. |
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