 Combining acetone-butanol-ethanol production and methyl orange decolorization in wastewater by fermentation with solid food waste as substrateJingyun Liu, Senqing Fan, Ke Bai and Zeyi Xiao Renewable Energy, 2021, vol. 179, issue C, 2246-2255 Abstract: Simultaneously producing acetone-butanol-ethanol (ABE) and decolorizing Methyl orange (MO) by fermentation with solid food waste (SFW) was studied. During the batch fermentation with MO concentration from 100 mgL−1 to 1000 mgL−1, carbon source utilization efficiency was above 93% with yields of acetone, butanol and ethanol being 0.13 gg-1, 0.23 gg-1 and 0.04 gg-1, respectively. During the repeated fermentation with the bagasse as the cell immobilization material, carbon source utilization efficiencies were all above 90% in the first 5 cycles fermentation. The maximum butanol and ABE concentration were 12.8 gL-1 and 22.1 gL-1, respectively. The solvent yield of acetone, butanol and ethanol were around 0.13 gg-1, 0.25 gg-1 and 0.06 gg-1, respectively. The MO decolorization had no negative effect on the ABE production and the decolorization efficiencies were all above 99% during batch fermentation or repeated fermentation with electrons transferred from intracellular to extracellular by mediator with the help of azo reductase to decolorize MO. Keywords: Solid food waste; Butanol; Methyl orange; Fermentation; Decolorization (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:179:y:2021:i:c:p:2246-2255 DOI: 10.1016/j.renene.2021.08.055 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
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