Synthesis of Calcium Silicate Hydrate from Coal Gangue for Cr(VI) and Cu(II) Removal from Aqueous Solution
文献类型：期刊论文
| 作者 | Zhang, Qing1,2; Liu, Guijian2,3; Peng, Shuchuan1; Zhou, Chuncai1,2 |
| 刊名 | MOLECULES
 |
| 出版日期 | 2021-10-01 |
| 卷号 | 26期号:20页码:14 |
| 关键词 | removal Cr(VI) Cu(II) aqueous solution coal gangue |
| DOI | 10.3390/molecules26206192 |
| 通讯作者 | Peng, Shuchuan(pengshuchuan@hfut.edu.cn) |
| 英文摘要 | Both the accumulation of coal gangue and potentially toxic elements in aqueous solution have caused biological damage to the surrounding ecosystem of the Huainan coal mining field. In this study, coal gangue was used to synthesize calcium silicate hydrate (C-S-H) to remove Cr(VI) and Cu(II)from aqueous solutions and aqueous solution. The optimum parameters for C-S-H synthesis were 700 & DEG;C for 1 h and a Ca/Si molar ratio of 1.0. Quantitative sorption analysis was done at variable temperature, C-S-H dosages, solution pH, initial concentrations of metals, and reaction time. The solution pH was precisely controlled by a pH meter. The adsorption temperature was controlled by a thermostatic gas bath oscillator. The error of solution temperature was controlled at & PLUSMN; 0.3, compared with the adsorption temperature. For Cr(VI) and Cu(II), the optimum initial concentration, temperature, and reaction time were 200 mg/L, 40 & DEG;C and 90 min, pH 2 and 0.1 g C-S-H for Cr(VI), pH 6 and 0.07 g C-S-H for Cu(II), respectively. The maximum adsorption capacities of Cr(VI) and Cu(II) were 68.03 and 70.42 mg & BULL;g(-1), respectively. Furthermore, the concentrations of Cu(II) and Cr(VI) in aqueous solution could meet the surface water quality standards in China. The adsorption mechanism of Cu(II) and Cr(VI) onto C-S-H were reduction, electrostatic interaction, chelation interaction, and surface complexation. It was found that C-S-H is an environmentally friendly adsorbent for effective removal of metals from aqueous solution through different mechanisms. |
| WOS关键词 | TRACE-ELEMENTS ; CHROMIUM VI ; ADSORPTION ; MECHANISM ; IONS ; COMBUSTION ; METAKAOLIN ; KAOLINITE ; PHOSPHATE ; KINETICS |
| 资助项目 | National Key Research and Development Program of China[2016YFC0201600] ; Key Research and Development Program of Anhui Province[201903a07020011] ; Key Research and Development Program of Anhui Province[202004b11020016] ; National Natural Science Foundation of China[41672144] ; National Natural Science Foundation of China[41702166] ; National Natural Science Foundation of China[41772035] |
| WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000714576700001 |
| 资助机构 | National Key Research and Development Program of China ; Key Research and Development Program of Anhui Province ; National Natural Science Foundation of China |
| 源URL | [http://ir.ieecas.cn/handle/361006/17160]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 通讯作者 | Peng, Shuchuan |
| 作者单位 | 1.Hefei Univ Technol, Sch Resource & Environm Engn, Hefei 230009, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 3.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Qing,Liu, Guijian,Peng, Shuchuan,et al. Synthesis of Calcium Silicate Hydrate from Coal Gangue for Cr(VI) and Cu(II) Removal from Aqueous Solution[J]. MOLECULES,2021,26(20):14. |
| APA | Zhang, Qing,Liu, Guijian,Peng, Shuchuan,&Zhou, Chuncai.(2021).Synthesis of Calcium Silicate Hydrate from Coal Gangue for Cr(VI) and Cu(II) Removal from Aqueous Solution.MOLECULES,26(20),14. |
| MLA | Zhang, Qing,et al."Synthesis of Calcium Silicate Hydrate from Coal Gangue for Cr(VI) and Cu(II) Removal from Aqueous Solution".MOLECULES 26.20(2021):14. |
入库方式： OAI收割
来源：地球环境研究所
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