A green desilication method from highly concentrated chromate solutions by Mg-Al-CO3 LDH
文献类型：期刊论文
| 作者 | Chen, Xing1,2; Liu, Wenke1; Luo, Ling1,3; Han, Yunwu1; Zhang, Hailin1; Zheng, Shili1,2; Zhang, Yi1; Li, Ping1,2,4
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| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
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| 出版日期 | 2022-04-01 |
| 卷号 | 286页码:7 |
| 关键词 | Desilication Mg-Al-CO3 LDH Zeolite precipitation Ion exchange & nbsp Synergistic effect |
| ISSN号 | 1383-5866 |
| DOI | 10.1016/j.seppur.2021.120432 |
| 英文摘要 | The Mg-Al-CO3 LDH was synthesized as a desilication agent to effectively and environmentally remove Si(IV) from Na2CrO4-NaAlO2-NaVO3-Na2SiO3-H2O solutions. It was observed that the changes of reaction parameters including temperature, NaOH concentration, time, the dosage of Mg-Al-CO3 LDH and NaAlO2 concentration significantly affected the desilication efficiency, while the effect of Cr(VI) and V(V) concentration on the desilication was negligible. The results showed that 91.5% Si(IV) could be removed after desilication at 90 ? for 6 h with the additive of 4 g/L Mg-Al-CO3 LDH, without the formation of hazardous Cr(VI)-containing compounds. It could be concluded that the desilication mechanism was dominated by the synergistic effect between the ion exchange of Si(IV) and the formation of zeolite compounds. The method proposed in this study provides a new insight for Si(IV) removal from the highly concentrated Cr(VI) solutions in the chromate clean production. |
| WOS关键词 | LAYERED DOUBLE HYDROXIDES ; MG-AL ; HYDROTHERMAL SYNTHESIS ; ALKALI SOLUTION ; SILICATE ; HYDROTALCITE ; NMR ; POLYMERIZATION ; ADSORPTION ; CHEMISTRY |
| 资助项目 | National Natural Science Founda-tion of China[51974285] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-3] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000781385700004 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Founda-tion of China ; Key Research Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/52856]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhang, Hailin; Li, Ping |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, 1 North Second St, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, 30 Xueyuan Rd, Beijing 100083, Peoples R China 4.Chinese Acad Sci, Ganjiang Innovat Acad, Ganzhou 341000, Peoples R China |
| 推荐引用方式 GB/T 7714 |
Chen, Xing,Liu, Wenke,Luo, Ling,et al. A green desilication method from highly concentrated chromate solutions by Mg-Al-CO3 LDH [J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,286:7. |
| APA |
Chen, Xing.,Liu, Wenke.,Luo, Ling.,Han, Yunwu.,Zhang, Hailin.,...&Li, Ping.(2022). A green desilication method from highly concentrated chromate solutions by Mg-Al-CO3 LDH .SEPARATION AND PURIFICATION TECHNOLOGY,286,7. |
| MLA |
Chen, Xing,et al." A green desilication method from highly concentrated chromate solutions by Mg-Al-CO3 LDH ".SEPARATION AND PURIFICATION TECHNOLOGY 286(2022):7. |
入库方式： OAI收割
来源：过程工程研究所
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