Medina-Collana Juan Taumaturgo, Rosales-Huamani Jimmy Aurelio, Franco-Gonzales Elmar Javier, Montaño-Pisfil Jorge Alberto
Faculty of Chemical Engineering, National University of Callao, Juan Pablo II 306 Avenue, Bellavista, Callao 07011, Peru.
Multidisciplinary Sensing, Universal Accessibility and Machine Learning Group, Faculty of Geological, Mining and Metallurgical Engineering of the National University of Engineering, Lima 15333, Peru.
Membranes (Basel). 2022 Jan 26;12(2):149. doi: 10.3390/membranes12020149.
Salicylic acid is an intermediate product in the synthesis of dyes, medications and aspirin. An electrodialysis module has been constructed with commercial cationic, anionic and bipolar membranes for the conversion of sodium salicylate into salicylic acid. The effect of operating conditions such as applied electric potential, salt concentration, initial acid concentration and volumetric flow on bipolar membrane electrodialysis (BMED) yields were investigated using Taguchi analysis. The results obtained in 210 min of work show an average concentration of salicylic acid of 0.0185 M, an average electric current efficiency of 85.3%, and a specific energy consumption of 2.24 kWh/kg of salicylic acid. It was concluded that the proposed bipolar membrane electrodialysis process is an efficient alternative to produce salicylic acid (SAH) from sodium salicylate (SANa) in an environmentally friendly manner. Furthermore, the production of sodium hydroxide was obtained as a by-product of the process carried out.
水杨酸是染料、药物和阿司匹林合成中的中间产物。已构建了一个使用商用阳离子、阴离子和双极膜的电渗析模块，用于将水杨酸钠转化为水杨酸。采用田口分析方法研究了施加电势、盐浓度、初始酸浓度和体积流量等操作条件对双极膜电渗析（BMED）产率的影响。在210分钟的工作中获得的结果表明，水杨酸的平均浓度为0.0185 M，平均电流效率为85.3%，每千克水杨酸的特定能耗为2.24 kWh。得出的结论是，所提出的双极膜电渗析工艺是一种以环境友好方式从水杨酸钠（SANa）生产水杨酸（SAH）的有效替代方法。此外，该工艺还产生了氢氧化钠作为副产物。
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