Removal of chromium (VI) from aqueous solutions using quaternized chitosan microspheres
文献类型：期刊论文
| 作者 | Hua, Chao1,2; Zhang, Runhu3; Bai, Fang1,2; Lu, Ping1,2; Liang, Xiangfeng1 |
| 刊名 | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 25期号:2页码:153-158 |
| 关键词 | Chromium (VI) Adsorption Quaternized chitosan microspheres Isotherms Thermodynamics |
| ISSN号 | 1004-9541 |
| 英文摘要 | In this study, quaternized chitosan microspheres (QCMS) were prepared and its Cr (VI) removal potential was investigated. Batch experiments were conducted to examine kinetics, adsorption isotherm, pH effect, and thermodynamic parameters. Equilibrium was attained within 50 min and maximum removal of 97.34% was achieved under the optimum conditions at pH 5. Adsorption data for Cr (VI) uptake by the QCMS were analyzed according to Langmuir, Freundlich, and Temkin adsorption models. The maximum uptake of Cr (VI) was 39.1 mg.g(-1). Thermodynamic parameters for the adsorption system were determinated at 293 K, 303 K, 313 K and 323 K. (Delta H degrees = 16.08 kJ.mol(-1); Delta G degrees = -5.84 to -8.08 kJ.mol(-1) and Delta S degrees = 74.81 J.K-1.mol(-1)). So the positive values of both Delta H degrees and Delta S degrees suggest an endothermic reaction and increase in randomness at the solid-liquid interface during the adsorption. Delta G degrees values obtainedwere negative indicating a spontaneous adsorption process. The kinetic processwas described by a pseudo-second-order rate equation very well. The results of the present study indicated that the QCMS could be considered as a potential adsorbent for Cr (VI) in aqueous solutions. (C) 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | HEXAVALENT CHROMIUM ; ACTIVATED CARBON ; WASTE-WATER ; ADSORPTION ; KINETICS ; IONS ; EQUILIBRIUM ; SORPTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000397964300004 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/22082]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Hebei Collaborat Innovat Ctr Modern Marine Chem T, Tianjin 300130, Peoples R China 3.Kunming Met Coll, Dept Chem Engn, Kunming 650033, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hua, Chao,Zhang, Runhu,Bai, Fang,et al. Removal of chromium (VI) from aqueous solutions using quaternized chitosan microspheres[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2017,25(2):153-158. |
| APA | Hua, Chao,Zhang, Runhu,Bai, Fang,Lu, Ping,&Liang, Xiangfeng.(2017).Removal of chromium (VI) from aqueous solutions using quaternized chitosan microspheres.CHINESE JOURNAL OF CHEMICAL ENGINEERING,25(2),153-158. |
| MLA | Hua, Chao,et al."Removal of chromium (VI) from aqueous solutions using quaternized chitosan microspheres".CHINESE JOURNAL OF CHEMICAL ENGINEERING 25.2(2017):153-158. |
入库方式： OAI收割
来源：过程工程研究所
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