Experimental study on concentration of ammonium lactate solution from kitchen garbage fermentation broth by two-compartment electrodialysis

文献类型： 外文期刊

第一作者： Cheng, Guishi

作者： Cheng, Guishi;Wang, Qunhui;Meng, Huimin;Cheng, Guishi;Li, Jinhui;Sun, Xiaohong

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关键词： Electrodialysis;Membrane-based separation;Ammonium lactate;Kitchen garbage fermentation broth

期刊名称：SEPARATION AND PURIFICATION TECHNOLOGY （ 影响因子：7.312； 五年影响因子：6.656 ）

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收录情况： SCI

摘要： In order to evaluate the performance of a two-compartment electrodialysis process used to concentrate ammonium lactate from kitchen garbage fermentation broth, we made experimental study to investigate the effect of initial dilute solution concentration (C_(di)) and flow-rate on limited current density (LCD), the effect of current density, C_(di) and operating modes on concentration of ammonium lactate, and found that LCD increases rapidly first, then increases slowly after it reaches 2.55 A/dm~2 with an increase in C_(di); LCD increases almost linearly with the flow-rate; an increase in C_(di) helps to increase the current efficiency, but causes a decrease in the recovery ratio of ammonium lactate from 85.57% to 82.66% with an increase in C_(di) from 0.35 to 0.45 mol/L at 2.5 A/dm~2; the use of constant current followed by the use of constant voltage is more effective than the use of constant current or constant voltage all the way through; ammonium lactate is concentrated from 0.10 to 0.396 mol/L with the use of constant current followed by the use of constant voltage for 6 h. The results indicated that two-compartment electrodialysis is an effective and useful process used to concentrate and purify ammonium lactate from kitchen garbage fermentation broth.

分类号： TQ028

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