Single pot bioprocessing for ethanol production from biogenic municipal solid waste. (July 2019)

• Record Type: Journal Article
• Authors: Althuri, Avanthi; Venkata Mohan, S
• Is Part Of: Bioresource technology. Volume 283(2019)
• Page Start: 159
• Page End: 167
• Publication Date: 2019-07
• Subjects: Organic waste -- Renewable sugars -- Co-fermentation -- Resource recovery -- Green technology; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2019.03.055
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Single step process for ethanol production from biogenic fraction of municipal solid waste. Laccase, amylase, cellulase and xylanase synergistic action for high sugar yield. C6 and C5 sugar co-fermentation for efficient ethanol production. Green technology with lower by-product formation. Maximum ethanol concentration (5.24% v/v) was achieved in shorter incubation time (30 h). Abstract: Burgeoning global energy demand and rapid diminution of fossil fuel reserves urged to seek for a sustainable energy source like bioethanol. Single pot bioprocessing (SPB) strategy employing in-house laccase, cellulase plus xylanase and amylase along with hexose and pentose sugar fermenting yeasts ( Saccharomyces cerevisiae and Pichia stipitis ) is designed in this study for ethanol production from biogenic municipal solid waste (BMSW). BMSW when subjected to simultaneous pretreatment and saccharification (SPS) resulted in 79.69% enzymatic digestibility and fared better compared to alkali pretreated counterparts (14.03%–51.10%). The maximum total sugar release in case of SPS was 146.9 g/L in 24 h. The maximum ethanol concentration of 5.24% (v/v) in 30 h was obtained from SPB of BMSW at 25% (w/v) solid loading. SPB for ethanol production from BMSW is an interesting and effective alternative to MSW going to landfill or incineration with an added perk of waste to wealth conversion.