Direct Extraction of Propionic Acid from Propionibacterium acidipropionici Broths with Tri-n-octylamine

2012 ◽  
Vol 35 (9) ◽  
pp. 1657-1663 ◽  
Author(s):  
A.-I. Galaction ◽  
A. Carlescu ◽  
M. Turnea ◽  
D. Caşcaval
Keyword(s):  
Propionic Acid ◽  
Direct Extraction ◽  
Propionibacterium Acidipropionici

scholarly journals Propionic acid production from corn stover hydrolysate by Propionibacterium acidipropionici

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Xiaoqing Wang ◽  
Davinia Salvachúa ◽  
Violeta Sànchez i Nogué ◽  
William E. Michener ◽  
Adam D. Bratis ◽  
...  
Keyword(s):  
Corn Stover ◽  
Propionic Acid ◽  
Acid Production ◽  
Propionibacterium Acidipropionici ◽  
Propionic Acid Production ◽  
Corn Stover Hydrolysate

Production of propionic acid-enriched volatile fatty acids from co-fermentation liquid of sewage sludge and food waste using Propionibacterium acidipropionici

2013 ◽  
Vol 68 (9) ◽  
pp. 2061-2066 ◽  
Author(s):  
Xiang Li ◽  
Hui Mu ◽  
Yinguang Chen ◽  
Xiong Zheng ◽  
Jingyang Luo ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Sewage Sludge ◽  
Propionic Acid ◽  
Food Waste ◽  
Volatile Fatty Acids ◽  
Biological Nutrient Removal ◽  
Distribution Analysis ◽  
Propionibacterium Acidipropionici ◽  
Second Stage ◽  
Fermentation Liquid

Volatile fatty acids (VFA), derived from sludge fermentation, have been used as one effective carbon source for biological nutrient removal, especially favorable with VFA containing with high levels of propionic acid. In this paper, a new fermentation method was employed to significantly produce the propionic acid-enriched VFA from the co-fermentation liquid of sewage sludge and food waste: including (1) mixing food waste with sludge in the anaerobic digester (the first stage) and (2) separating the mixture, sterilizing the first stage liquid and fermenting it after inoculation with Propionibacterium acidipropionici (the second stage). The effect of the key parameters including pH, the mixing ratio of the food waste and sludge, fermentation time and temperature of the first stage on the propionic acid-enriched VFA production (the second stage) was individually discussed. By the molecular weight distribution analysis, the comparison of the solubilisation and hydrolysis process in difference parameters was fully elaborated. The optimal combination of the parameters was then obtained. Finally, the propionic acid-enriched VFA fermentation was successfully conducted in a semi-continuous reactor using the first stage liquid from the optimal condition.

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