分析化学2009，Vol.37Issue(7)：980-984,5.
精氨酸的溶剂浮选分离技术及其分离机制
Solvent Sublation of L-Arginine and Its Separation Mechanism
摘要
Abstract
The solvent sublation technique was applied for the separation and enrichment of L-Arg using dodecylbenzene sulfonic (DBSA) as the surfactant, di (2-ethylhexyl) phosphoric acid (P204) as the extractant and n-heptane as the organic solution. The solvent sublation was compared with the floatation complexation extraction, foam floatation and solvent extraction. The experimental results showed that enrichment ratio of 16.2 and removal rate of 97.2% to L-Arg were obtained by the solvent sublation under the conditions of room temperature, 0.09 g/L L-Arg aqueous solution 250 mL, DBSA concentration 0.15 g/L, the initial pH 7.0, volume of n-heptane 10 mL, volume of P204 4.5 mL, gas flow rate of 200 mL/min. The study of the kinetics indicated that the solvent sublation process could be divided into three stages distinctly. The processes of the first stage and the second stage followed the first order kinetics equation; the process of the third stage followed the zero order kinetics equation. The separation mechanism of solvent sublation was also discussed.关键词
精氨酸/溶剂浮选/动力学/分离机制Key words
L-Arginine/solvent sublation/kinetics/separation mechanism分类
化学化工引用本文复制引用
梁擘,吴兆亮,胡滨,郑辉杰..精氨酸的溶剂浮选分离技术及其分离机制[J].分析化学,2009,37(7):980-984,5.基金项目
本文系天津市应用基础及前沿技术研究计划重点项目(NO.08JCZDJC25200) （NO.08JCZDJC25200）
