pH值对电渗析法回收厨房垃圾发酵液中乳酸的影响

程桂石; 汪群慧; 齐虹; 孙晓红; 赵莹

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pH值对电渗析法回收厨房垃圾发酵液中乳酸的影响

能源和环境工程 | 更新时间：2025-12-10

- pH值对电渗析法回收厨房垃圾发酵液中乳酸的影响
- Effects of pH on recovery of lactic acid from kitchen garbage fermentation broth by electrodialysis
- 化工学报 2005年第11期页码：2200-2203
- 作者机构：
  
  哈尔滨工业大学环境科学与工程系,黑龙江,哈尔滨,150090
- 作者简介：
- 基金信息：
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- 网络首发：2005-11-25，
  
  纸质出版：2005-11-25
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程桂石, 汪群慧, 齐虹, 等. pH值对电渗析法回收厨房垃圾发酵液中乳酸的影响[J]. 化工学报, 2005,(11):2200-2203.

CHENG Guishi, WANG Qunhui, SUN Xiaohong, et al. Effects of pH on recovery of lactic acid from kitchen garbage fermentation broth by electrodialysis[J]. CIESC Journal, 2005, (11): 2200-2203.
程桂石, 汪群慧, 齐虹, 等. pH值对电渗析法回收厨房垃圾发酵液中乳酸的影响[J]. 化工学报, 2005,(11):2200-2203. DOI：

CHENG Guishi, WANG Qunhui, SUN Xiaohong, et al. Effects of pH on recovery of lactic acid from kitchen garbage fermentation broth by electrodialysis[J]. CIESC Journal, 2005, (11): 2200-2203. DOI：

摘要

Abstract

Recovery of lactic acid from kitchen garbage fermentation broth was carried out by electrodialysis (ED). The effects of pH on permeation ratios of lactic acid

ammonia

reducing sugar were discussed. The experimental results showed that pH was the main factor that affected the permeation of ammonia. The rise of pH changed the equilibrium of NH+4

NH3 and NH38226;H2O

and resulted in the increase of NH3 and NH38226;H2O

thus the permeation ratio of ammonia increased. Under the conditions of weak acidity

12 h ED and 2.0 A8226;dm-2 current density

the recovery ratio of lactic acid and the average current efficiency were over 89% and 90%

respectively

whereas the permeation ratios of ammonia and reducing sugar were less than 0.15% and 0.95%

respectively. The product could be used as raw material of polylactic acid synthesis if it was further concentrated by distillation.

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