Kinetics of Forward Extraction of Boric Acid from Salt Lake Brine by 2-Ethyl-1,3-hexanediol in Toluene Using Single Drop Technique

doi:10.1016/S1004-9541(14)60059-8

Chinese Journal of Chemical Engineering ›› 2014, Vol. 22 ›› Issue (5): 496-502.DOI: 10.1016/S1004-9541(14)60059-8

• 催化、动力学与反应工程 • 上一篇下一篇

Kinetics of Forward Extraction of Boric Acid from Salt Lake Brine by 2-Ethyl-1,3-hexanediol in Toluene Using Single Drop Technique

吕建华, 刘继东, 孙玉洁, 李春利

School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China

收稿日期:2012-09-21 修回日期:2012-12-17 出版日期:2014-05-28 发布日期:2014-05-06
通讯作者: LI Chunli,E-mail: ctstljh@hebut.edu.cn
基金资助:
Supported by the Natural Science Foundation of the Education Department Hebei Province (2009426), and Educational Commission of Hebei Province (ZH2011221).

Kinetics of Forward Extraction of Boric Acid from Salt Lake Brine by 2-Ethyl-1,3-hexanediol in Toluene Using Single Drop Technique

LÜ Jianhua, LIU Jidong, SUN Yujie, LI Chunli

School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China

Received:2012-09-21 Revised:2012-12-17 Online:2014-05-28 Published:2014-05-06
Supported by:
Supported by the Natural Science Foundation of the Education Department Hebei Province (2009426), and Educational Commission of Hebei Province (ZH2011221).

摘要/Abstract

摘要： The kinetics of forward extraction of boric acid from salt lake brine by 2-ethyl-1, 3-hexanediol in toluene was investigated using the single drop technique. The factors affecting the extraction rate include interfacial area between aqueous phase and organic phase, initial concentration of boric acid in aqueous phase, initial concentration of 2-ethyl-1, 3-hexanediol in organic phase, and extraction temperature. The experimental results show that the extraction rate increases with the increase of the initial concentration of boric acid and 2-ethyl-1,3-hexanediol, interfacial area of two phases, and temperature. With the temperature-dependence study, it is showed that the extraction is a diffusion-controlled process. The kinetic equation is presented for pH 1.0 in the aqueous phase and temperature of 318 K.

关键词: kinetics, boric acid, extraction, mass transfer, single drop technique

Abstract: The kinetics of forward extraction of boric acid from salt lake brine by 2-ethyl-1, 3-hexanediol in toluene was investigated using the single drop technique. The factors affecting the extraction rate include interfacial area between aqueous phase and organic phase, initial concentration of boric acid in aqueous phase, initial concentration of 2-ethyl-1, 3-hexanediol in organic phase, and extraction temperature. The experimental results show that the extraction rate increases with the increase of the initial concentration of boric acid and 2-ethyl-1,3-hexanediol, interfacial area of two phases, and temperature. With the temperature-dependence study, it is showed that the extraction is a diffusion-controlled process. The kinetic equation is presented for pH 1.0 in the aqueous phase and temperature of 318 K.

Key words: kinetics, boric acid, extraction, mass transfer, single drop technique

吕建华, 刘继东, 孙玉洁, 李春利. Kinetics of Forward Extraction of Boric Acid from Salt Lake Brine by 2-Ethyl-1,3-hexanediol in Toluene Using Single Drop Technique[J]. Chinese Journal of Chemical Engineering, 2014, 22(5): 496-502.

LÜ Jianhua, LIU Jidong, SUN Yujie, LI Chunli. Kinetics of Forward Extraction of Boric Acid from Salt Lake Brine by 2-Ethyl-1,3-hexanediol in Toluene Using Single Drop Technique[J]. Chin.J.Chem.Eng., 2014, 22(5): 496-502.

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Kinetics of Forward Extraction of Boric Acid from Salt Lake Brine by 2-Ethyl-1,3-hexanediol in Toluene Using Single Drop Technique

Kinetics of Forward Extraction of Boric Acid from Salt Lake Brine by 2-Ethyl-1,3-hexanediol in Toluene Using Single Drop Technique

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