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Citation: HOU Jing-Wei, MA You-Guang, GAO Xi-Qun. Factors Influencing the Extraction of Tryptophane by Tri-n-octylmethylammonium Chloride[J]. Chinese Journal of Applied Chemistry, ;2003, 20(7): 633-637. shu

Factors Influencing the Extraction of Tryptophane by Tri-n-octylmethylammonium Chloride

1.
a Chemical Engineering Research Center, Tianjin University, Tianjin 300072;
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b Liaoyang Petro-chemical Fibre Co. Yinghua Economy and Development Co., Liaoyang

Corresponding author: MA You-Guang,
Received Date: 19 October 2002
Available Online: 24 March 2003
Fund Project: 国家自然科学基金资助项目(20176036) (20176036)

The influence of ionic strength, kind of salt, concentration of extractant and initial pH value of water phase on the distribution coefficient of tryptophane(Trp) in the extraction process carried out in tri-n-octylmethylammonium chloride(TOMAC) system have been investigated. The results indicate that the distribution coefficient changes little with the increase of the ionic strength, when the latter is large enough. The difference in distribution coefficient obtained from experiments and theretical calculation has been analyzed, and an equation describing the relation between ionic strength and activity coefficient is obtained. The distribution coefficient of the Trp increases with increase of TOMAC concentration and initial pH value of water phase, but it is less affected when pH₀ is>11. For salts of the same cation Na⁺, D_Cl^->D_Br^-, and for salts of the same anion Cl^-, D_Na⁺>D_K⁺.
- tryptophane,
- extraction,
- tri-n-octylmethylammonium chloride
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