Bioresource Technology 2015-09-01

Lactic acid production from acidogenic fermentation of fruit and vegetable wastes.

Yuanyuan Wu, Hailing Ma, Mingyue Zheng, Kaijun Wang

文献索引：Bioresour. Technol. 191 , 53-8, (2015)

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摘要

This work focused on the lactic acid production from acidogenic fermentation of fruit and vegetable wastes treatment. A long term completely stirred tank reactor (CSTR) lasting for 50 days was operated at organic loading rate (OLR) of 11 gVS/(L d) and sludge retention time (SRT) of 3 days with pH controlled at 4.0 (1-24 day) and 5.0 (25-50 day). The results indicated that high amount of approximately 10-20 g/L lactic acid was produced at pH of 4.0 and the fermentation type converted from coexistence of homofermentation and heterofermentation into heterofermentation. At pH of 5.0, the hydrolysis reaction was improved and the total concentration of fermentation products increased up to 29.5 g COD/L. The heterofermentation was maintained, however, bifidus pathway by Bifidobacterium played an important role.Copyright © 2015 Elsevier Ltd. All rights reserved.

相关化合物

  • 硫酸
  • 乙醇
  • 琥珀酸； 丁二酸
  • 甲酸
  • 炭黑
  • 甲烷
  • 二氧化碳

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