Application of silver-based dihydric alcohol to the extraction of methyl linolenate with high extractability and stability replacing ionic liquids

doi:10.1016/j.cjche.2019.12.012

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (3): 871-880.DOI: 10.1016/j.cjche.2019.12.012

• Energy, Resources and Environmental Technology • 上一篇下一篇

Application of silver-based dihydric alcohol to the extraction of methyl linolenate with high extractability and stability replacing ionic liquids

Qianxia Chen, Xianghong Lu, Jianbing Ji

Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China

收稿日期:2019-08-22 修回日期:2019-12-06 出版日期:2020-03-28 发布日期:2020-06-11
通讯作者: Xianghong Lu
基金资助:
This work was supported by the National Natural Science Foundation of China (2014AA022103) and the Zhejiang Province Public Welfare Technology Application Research Project (LGG20B060003).

Application of silver-based dihydric alcohol to the extraction of methyl linolenate with high extractability and stability replacing ionic liquids

Qianxia Chen, Xianghong Lu, Jianbing Ji

Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China

Received:2019-08-22 Revised:2019-12-06 Online:2020-03-28 Published:2020-06-11
Contact: Xianghong Lu
Supported by:
This work was supported by the National Natural Science Foundation of China (2014AA022103) and the Zhejiang Province Public Welfare Technology Application Research Project (LGG20B060003).

摘要/Abstract

摘要： A novel silver-based dihydric alcohol extractant was substituted for ionic liquids to enrich methyl linolenate (C18-3) from tallow seed oil methyl ester in this study. The interactions among dihydric alcohol, Ag(I) and C18-3 were explored by FT-IR spectroscopy. The effects of dihydric alcohol structure, carrier Ag (I) concentration, temperature and initial feed concentration on extraction yield and selectivity were reported. The good extraction performance was achieved by 1,4-butanediol containing AgBF₄. The complexation of Ag (I) with C18-3 was dominant in extraction operation rather than physical partition. Furthermore, a multi-step reverse extraction method was proposed to obtain C18-3 product and regenerate the extractant. 1-Hexene as the stripping phase can facilitate C18-3 reverse extraction. The content of C18-3 in the product was up to 93.36%, and the yield was 73.76%. This work opened a new route for the utilization of the dihydric alcohol properties to manipulate the carrier efficiency for extracting unsaturated fatty acid methyl esters at a lower cost.

关键词: Liquid-liquid extraction, Dihydric alcohol, Complexation, AgBF₄, Reverse extraction

Abstract: A novel silver-based dihydric alcohol extractant was substituted for ionic liquids to enrich methyl linolenate (C18-3) from tallow seed oil methyl ester in this study. The interactions among dihydric alcohol, Ag(I) and C18-3 were explored by FT-IR spectroscopy. The effects of dihydric alcohol structure, carrier Ag (I) concentration, temperature and initial feed concentration on extraction yield and selectivity were reported. The good extraction performance was achieved by 1,4-butanediol containing AgBF₄. The complexation of Ag (I) with C18-3 was dominant in extraction operation rather than physical partition. Furthermore, a multi-step reverse extraction method was proposed to obtain C18-3 product and regenerate the extractant. 1-Hexene as the stripping phase can facilitate C18-3 reverse extraction. The content of C18-3 in the product was up to 93.36%, and the yield was 73.76%. This work opened a new route for the utilization of the dihydric alcohol properties to manipulate the carrier efficiency for extracting unsaturated fatty acid methyl esters at a lower cost.

Key words: Liquid-liquid extraction, Dihydric alcohol, Complexation, AgBF₄, Reverse extraction

Qianxia Chen, Xianghong Lu, Jianbing Ji. Application of silver-based dihydric alcohol to the extraction of methyl linolenate with high extractability and stability replacing ionic liquids[J]. 中国化学工程学报, 2020, 28(3): 871-880.

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Application of silver-based dihydric alcohol to the extraction of methyl linolenate with high extractability and stability replacing ionic liquids

Application of silver-based dihydric alcohol to the extraction of methyl linolenate with high extractability and stability replacing ionic liquids

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