A Comprehensive Study of Extraction of L-Lysine with Sec-Octylphenoxy Acetic Acid in Sulfonated Kerosene

作者：Zhang Jie; Zhou Xiaohua; Wang Dan^*; Zhou Xing; Yun Fang; Tan Shiyu

来源：Separation Science and Technology, 2014, 49(9): 1349-1356.

DOI：10.1080/01496395.2013.876047

• sec-octylphenoxy acetic acid
• L-lysine
• extraction
• atomic force microscopy
• fluorescence

Extraction of L-lysine with sec-octylphenoxy acetic acid (CA-12) in sulfonated kerosene was investigated under different pH and CA-12 concentrations, and optimized conditions were determined. Half-saturation fluorometric analysis and atomic force microscopy showed that the electrovalent bond between L-lysine and CA-12 acted as the main force to partition L-lysine into organic phase. Moreover, the mathematically analyzed extraction process indicated that the extractive complex was a 1:2 L-lysine center dot CA-12 structure. The initial extraction efficiency could reach 78.9 +/- 1.2% and the total strip extraction efficiency after three strip extractions could reach 95.7 +/- 1.8% by using a dilute KCl solution.

• 出版日期2014
• 单位重庆大学