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Removal of chromium (VI) from aqueous solutions using activated carbon prepared from crofton weed
Wang, Ping1; Zhang, Runhu2; Hua, Chao3
2013-02-01
Source PublicationDESALINATION AND WATER TREATMENT
Volume51Issue:10-12Pages:2327-2335
AbstractActivated 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.
KeywordChromium(Vi) Activated Carbon Adsorption Isotherms Thermodynamics Crofton Weed
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordWASTE-WATER ; CHEMICAL ACTIVATION ; INDUSTRIAL-WASTE ; METAL IONS ; PART I ; ADSORPTION ; KINETICS ; EQUILIBRIUM ; CR(VI) ; OPTIMIZATION
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Chemical ; Water Resources
WOS IDWOS:000315491400037
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13467
Collection研究所(批量导入)
Affiliation1.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
Recommended Citation
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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