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*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-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%.
Original languageEnglish
JournalBiomass Conversion and Biorefinery
ISSN2190-6815
DOIs
Publication statusE-pub ahead of print - 15. Oct 2020

Keywords

  • Anaerobic
  • Dark fermentation
  • Food waste

Fingerprint

Dive into the research topics of 'Enhanced short-chain carboxylic acids yield in dark fermentation by cyclic product removal'. Together they form a unique fingerprint.

Cite this