A bioprocess for the remediation of anaerobically digested molasses spentwash from biogas plant and simultaneous production of lactic acid

AR Shibu, V Kumar, L Wati, K Chaudhary, D Singh, Poonam Singh - Nee Nigam

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A bacterial isolate LAB-1 identified as Lactobacillus casei was cultivated in a fermentation medium containing biogas plant effluent. This effluent was generated after anaerobic digestion of molasses spentwash in biogas fermenters. In the bioremediation process of this very dark coloured effluent through the cultivation of L. casei, decrease in effluent's colour of 49 and 52% and reduction in COD level up to 54 and 57% were achieved using bacterial cells in free and immobilised system, respectively, in 5 days batch cultivation. During this process of bioremediation, a metabolite lactic acid was produced by this bacterial isolate with the yield of 10.9 and 11.3 mg/ml, in free and immobilised cells fermentation, respectively.
LanguageEnglish
Pages337-341
JournalBioprocess Engineering
Volume20
Issue number4
Publication statusPublished - Apr 1999

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biogas
molasses
remediation
lactic acid
effluents
Lactobacillus casei
bioremediation
fermentation
immobilized cells
anaerobic digestion
fermenters
metabolites
color
cells

Cite this

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title = "A bioprocess for the remediation of anaerobically digested molasses spentwash from biogas plant and simultaneous production of lactic acid",
abstract = "A bacterial isolate LAB-1 identified as Lactobacillus casei was cultivated in a fermentation medium containing biogas plant effluent. This effluent was generated after anaerobic digestion of molasses spentwash in biogas fermenters. In the bioremediation process of this very dark coloured effluent through the cultivation of L. casei, decrease in effluent's colour of 49 and 52{\%} and reduction in COD level up to 54 and 57{\%} were achieved using bacterial cells in free and immobilised system, respectively, in 5 days batch cultivation. During this process of bioremediation, a metabolite lactic acid was produced by this bacterial isolate with the yield of 10.9 and 11.3 mg/ml, in free and immobilised cells fermentation, respectively.",
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A bioprocess for the remediation of anaerobically digested molasses spentwash from biogas plant and simultaneous production of lactic acid. / Shibu, AR; Kumar, V; Wati, L; Chaudhary, K; Singh, D; Singh - Nee Nigam, Poonam.

In: Bioprocess Engineering, Vol. 20, No. 4, 04.1999, p. 337-341.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A bioprocess for the remediation of anaerobically digested molasses spentwash from biogas plant and simultaneous production of lactic acid

AU - Shibu, AR

AU - Kumar, V

AU - Wati, L

AU - Chaudhary, K

AU - Singh, D

AU - Singh - Nee Nigam, Poonam

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Y1 - 1999/4

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AB - A bacterial isolate LAB-1 identified as Lactobacillus casei was cultivated in a fermentation medium containing biogas plant effluent. This effluent was generated after anaerobic digestion of molasses spentwash in biogas fermenters. In the bioremediation process of this very dark coloured effluent through the cultivation of L. casei, decrease in effluent's colour of 49 and 52% and reduction in COD level up to 54 and 57% were achieved using bacterial cells in free and immobilised system, respectively, in 5 days batch cultivation. During this process of bioremediation, a metabolite lactic acid was produced by this bacterial isolate with the yield of 10.9 and 11.3 mg/ml, in free and immobilised cells fermentation, respectively.

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