Journal
BIORESOURCE TECHNOLOGY
Volume 192, Issue -, Pages 646-653Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.05.104
Keywords
Bio-ethanol; Anaerobic acidogenic fermentation; Press mud; Pretreatment
Funding
- alternate fuels group of Department of Science and Technology (DST) - India, Government of India [DST/TSG/AF/2012/49-G]
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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. (C) 2015 Elsevier Ltd. All rights reserved.
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