Recovery of boron from unacidified salt lake brine by solvent extraction with 2,2,4-trimethyl-1,3-pentanediol
文献类型：期刊论文
| 作者 | Peng, Xiaowu; Shi, Dong; Zhang, Yuze ; Zhang, Licheng; Ji, Lianmin; Li, Lijuan
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| 刊名 | JOURNAL OF MOLECULAR LIQUIDS
 |
| 出版日期 | 2021-03-15 |
| 卷号 | 326 |
| ISSN号 | 0167-7322 |
| DOI | 10.1016/j.molliq.2021.115301 |
| 英文摘要 | In this work, the extraction of boron fromsalt lake (SL) brine using 2,2,4-trimethyl-1,3-pentanediol (TMPD) was investigated. Factors affecting boron recovery during the solvent extraction process, including feed pH, concentrations of extractant and H3BO3, phase ratio of organic to brine (O/A), and temperature, were investigated. Increasing feed pH initially resulted in a high boron extraction rate, but there was a limitation, as further increasing feed pH resulted in rapid formation of B[OH](4)(-) having a low capacity to complex with TMPD, and therefore lower boron extraction. Boron recovery increased as the TMPD concentration and O/A increased. Salting-out effect experiment indicated that the addition of magnesium chloride showed two opposite effects on boron extraction. The combination of pH <7, O/A = 1 & TMPD/H3BO3 molar ratio = 2:1 was ideal for boron recovery, resulting in single-stage boron extraction efficiency of >85% and three-stage of 99.79%. To investigate the extraction mechanism, the slope ratio method was combined with Raman spectroscopy and infrared spectroscopy to characterize the structure of TMPD and boron complex in organic extraction solvent. Furthermore, under the optimal conditions, a three-stage extraction and two-stage stripping process was performed, resulting the extraction and stripping efficiency of boron were 97.12% and 88.98%, respectively. The results of the study reveal a promising strategy of boron recovery from SL brine without acidification. (C) 2021 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.isl.ac.cn/handle/363002/34171]  |
| 专题 | 青海盐湖研究所_盐湖资源综合利用工程技术中心 |
| 推荐引用方式 GB/T 7714 | Peng, Xiaowu,Shi, Dong,Zhang, Yuze,et al. Recovery of boron from unacidified salt lake brine by solvent extraction with 2,2,4-trimethyl-1,3-pentanediol[J]. JOURNAL OF MOLECULAR LIQUIDS,2021,326. |
| APA | Peng, Xiaowu,Shi, Dong,Zhang, Yuze,Zhang, Licheng,Ji, Lianmin,&Li, Lijuan.(2021).Recovery of boron from unacidified salt lake brine by solvent extraction with 2,2,4-trimethyl-1,3-pentanediol.JOURNAL OF MOLECULAR LIQUIDS,326. |
| MLA | Peng, Xiaowu,et al."Recovery of boron from unacidified salt lake brine by solvent extraction with 2,2,4-trimethyl-1,3-pentanediol".JOURNAL OF MOLECULAR LIQUIDS 326(2021). |
入库方式： OAI收割
来源：青海盐湖研究所
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