Enhanced short-chain carboxylic acids yield in dark fermentation by cyclic product removal

Muhammad Tahir Ashraf, Juan-Rodrigo Bastidas Oyanedel, Ashfaq Ahmad*, Abdul Hai, Hanifa Taher AlBlooshi, Jens Ejbye Schmidt, Fawzi Banat*

*Kontaktforfatter

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstract

Disposal of carbon-rich wastes, such as food waste, is one of the several environmental concerns raised nowadays. Conversion of organic residues by dark fermentation produces short-chain (C1–C6) carboxylic acids, which are valuable chemical building blocks. The objective of this study was to optimize the operational parameters and perform comparative studies of cyclic and batch mode dark fermentation for carboxylic acid production from food waste. A maximum yield of short-chain carboxylic acids (SCCAs) 0.21 ± 0.012 g-SCCAs/g-TS in 50 g-TS/L was obtained in the cyclic mode as compared with the 0.13 ± 0.011 g-SCCAs/g-TS in the batch mode. The results showed that the use of the cyclic mode increased the carboxylic acid yield from 54 (batch mode) to 88%.
OriginalsprogEngelsk
TidsskriftBiomass Conversion and Biorefinery
Vol/bind13
Udgave nummer1
Sider (fra-til)51-59
ISSN2190-6815
DOI
StatusUdgivet - jan. 2023

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