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首页> 外文期刊>Desalination and water treatment >Recovery of alpha-ketoglutaric acid from multi-component model solutions: impact of initial composition of diluate solution on the efficiency of the EDBM process
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Recovery of alpha-ketoglutaric acid from multi-component model solutions: impact of initial composition of diluate solution on the efficiency of the EDBM process

机译：从多组分模型溶液中回收α-酮戊二酸：稀释液初始组成对EDBM工艺效率的影响

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摘要

In this work, the impact of an initial ratio of concentrations of alpha-ketoglutaric acid (AKG) in relation to lactic, acetic, and propionic acids present in a multi-component simulated solution, on the efficiency of the bipolar membrane electrodialysis (EDBM) process as well as on the purity of main product was investigated. The use of 10 cell pairs EDBM membrane stack with a membrane configuration of anion-exchange membrane-bipolar membrane allowed for the total removal of AKG from diluate solution at a constant current density (90 A/m(2)) in less than 90 min. Moreover, an increase in the initial concentration of AKG in diluate solution from 15 to 25 g/L was found to lead to a significant improvement of the purity of AKG obtained, from 58.2% to 80.6% at the end of the optimal duration of EDBM process, at the same specific energy consumption (1.8 kWh/kg).
机译：在这项工作中，多组分模拟溶液中存在的初始浓度的α-酮戊二酸（AKG）相对于乳酸，乙酸和丙酸的比例对双极膜电渗析（EDBM）效率的影响考察了主要产品的纯度和工艺。使用具有阴离子交换膜-双极性膜的膜结构的10个细胞对EDBM膜堆，可在90分钟内以恒定电流密度（90 A / m（2））从稀释液中完全去除AKG 。此外，发现稀释液中AKG的初始浓度从15 g / L增加到25 g / L导致获得的AKG纯度显着提高，在EDBM最佳持续时间结束时从58.2％增至80.6％。在相同的单位能耗（1.8 kWh / kg）下进行处理。

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