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2015, vol. 19, iss. 1, pp. 34-37
Distillery wastes to lactic acid: Bio refinery approach
aUniversity of Belgrade, Faculty of Technology and Metallurgy
bUniversity of Novi Sad, Faculty of Technology
The cost of distillery wastewater treatment is an important issue in overall   economy of bioethanol production. Besides traditional utilization of   distillery wastewater or stillage in animal nutrition, its chemical   complexity is offering other possibilities. Complete distillery wastewater   and liquid stillage from bioethanol production were studied as substrates   for batch, fed-batch and repeated batch lactic acid fermentation by   Lactobacillus rhamnosus ATCC 7469 for parallel production of lactic acid,   probiotics and feed. Both  of  the  substrates, liquid  stillage  and   complete stillage  enabled  effective production of  lactic  acid  with  the    process productivity of approximately 1.80 g h-1L-1, however utilization of   the remains was different. The first strategy enabled conversion of liquid   distillery wastewater into lactic acid and high value feed additive with   zeolite immobilized probiotic biomass. The second strategy enabled effective   lactic acid production on the complete stillage with additional production   of high quality fermented feed for monogastric animals.


article language: English
document type: Original Scientific Paper
published in SCIndeks: 02/03/2016

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