title: Generation of bioethanol and VFA through anaerobic acidogenic fermentation route with press mud obtained from sugar mill as a feedstock.
abstract: Acidogenic anaerobic fermentation route was explored for the production of bioethanol and volatile fatty acids (VFA) from the press mud (PM) obtained from sugar mill. Slurry was prepared from PM having 10% of total solids and the same was hydrolyzed under acidic thermal conditions. Both press mud slurry (PMS) and pre-treated press mud slurry (PTPMS) was used as feedstock with mixed microbial consortia (MMC) and enriched mixed microbial consortia (EMMC). Mix of bioethanol and VFA were obtained in all the four cases (PMS-MMC, PMS-EMMC, PTPMS-EMC and PTPMS-EMMC), but, bioethanol and VFA yield of 0.04 g/g and 0.27 g/g, respectively obtained from PTPMS with EMMC was found to be comparatively higher. Control experiments carried out with glucose yielded bioethanol and VFA of 0.042 g/g and 0.28 g/g, respectively demonstrating that the organism was using reducible sugars in the feedstock for the generation of bioethanol by simultaneously producing the VFA from COD.
authors.affiliation: Bioengineering and Environmental Sciences, CSIR - Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Andhra Pradesh, India.
authors.forename: Kranti
authors.initials: K
authors.lastname: Kuruti
authors.affiliation: Bioengineering and Environmental Sciences, CSIR - Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Andhra Pradesh, India. Electronic address: gangagnirao@yahoo.com.
authors.forename: A
authors.initials: A
authors.lastname: Gangagni Rao
authors.affiliation: Bioengineering and Environmental Sciences, CSIR - Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Andhra Pradesh, India.
authors.forename: Bharath
authors.initials: B
authors.lastname: Gandu
authors.affiliation: Bioengineering and Environmental Sciences, CSIR - Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Andhra Pradesh, India.
authors.forename: G
authors.initials: G
authors.lastname: Kiran
authors.affiliation: Bioengineering and Environmental Sciences, CSIR - Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Andhra Pradesh, India.
authors.forename: Sameena
authors.initials: S
authors.lastname: Mohammad
authors.affiliation: Bioengineering and Environmental Sciences, CSIR - Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Andhra Pradesh, India.
authors.forename: S
authors.initials: S
authors.lastname: Sailaja
authors.affiliation: Bioengineering and Environmental Sciences, CSIR - Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500007, Andhra Pradesh, India.
authors.forename: Y V
authors.initials: YV
authors.lastname: Swamy
mesh_terms: D000143:Acids / Q000737:chemistry; D000383:Agriculture / Q000379:methods; D000693:Anaerobiosis / Q000502:physiology; D001673:Biodegradation, Environmental; D056804:Biofuels / Q000382:microbiology*; D050260:Carbohydrate Metabolism / Q000502:physiology*; D057168:Distillation; D000431:Ethanol / Q000378:metabolism*; D005232:Fatty Acids, Volatile / Q000378:metabolism*; D005285:Fermentation / Q000502:physiology; D031786:Saccharum / Q000737:chemistry / Q000382:microbiology*
chemical_list: D000143:Acids; D056804:Biofuels; D005232:Fatty Acids, Volatile; D000431:Ethanol
keywords: Anaerobic acidogenic fermentation; Bio-ethanol; Press mud; Pretreatment