Arabian Journal for Science and Engineering ( IF 2.9 ) Pub Date : 2021-01-05 , DOI: 10.1007/s13369-020-05255-2 Victoria Inyang , David Lokhat
The optimization of the reactive extraction of butyric acid from an aqueous stream was effectively carried out using response surface methodology. Three process parameters were studied, viz. initial butyric acid concentration, trioctylamine concentration and temperature, to examine the interactive effects on extraction efficiency and distribution coefficient. A Box-Behnken design comprising of seventeen experimental runs was utilized in the reactive extraction study of butyric acid. Analysis of a second-order polynomial model yielded the following optimal conditions: temperature 301.829 K, initial butyric acid concentration 0.493 kmol/m3, trioctylamine composition 26.417%v/v with the following responses: distribution coefficient = 28.795 and extraction efficiency of 96.666%. Experimental validation of the model was carried out with the predicted process variables, and the responses obtained (distribution coefficient = 27.171, extraction efficiency = 96.450%) were in close conformity to the predicted outcomes. Three-dimensional surface plots obtained from statistical analysis demonstrated that the butyric acid concentration and TOA composition had a more significant and interactive effect than the temperature on the response value in the reactive extraction process.
中文翻译:
1-辛醇中三辛胺的丁酸反应性萃取:响应面法参数优化技术
使用响应表面方法可以有效地优化从水流中反应萃取丁酸的效果。研究了三个工艺参数,即。初始丁酸浓度,三辛胺浓度和温度,以考察相互作用对萃取效率和分配系数的影响。在丁酸的反应萃取研究中采用了由17个实验组成的Box-Behnken设计。对二阶多项式模型的分析得出以下最佳条件:温度301.829 K,初始丁酸浓度0.493 kmol / m 3,三辛胺组成为26.417%v / v,具有以下响应:分配系数= 28.795和萃取效率为96.666%。使用预测的过程变量对模型进行实验验证,所获得的响应(分配系数= 27.171,提取效率= 96.450%)与预测的结果非常吻合。通过统计分析获得的三维表面图表明,丁酸浓度和TOA组成比反应萃取过程中温度对响应值的影响更显着和相互作用。