From Agricultural Wastes to Fermentation Nutrients: A Case Study of 2,3-Butanediol Production

oleh: Christopher Chukwudi Okonkwo, Ademola Duduyemi, Victor Chinomso Ujor, Hasan K. Atiyeh, Ifeanyi Iloba, Nasib Qureshi, Thaddeus Chukwuemeka Ezeji

Format: Article
Diterbitkan: MDPI AG 2022-12-01

Deskripsi

The goal of this study was to improve resource use efficiency in agricultural systems and agro-based industries, reduce wastes that go to landfills and incinerators, and consequently, improve the economics of 2,3-butanediol (2,3-BD) production. This study evaluated the feasibility of 2,3-BD production by replacing the mineral nutrients, and buffers with anaerobic digestate (ADE), poultry-litter (PLBC)- and forage-sorghum (FSBC)-derived biochars. Fermentation media formulations with ADE and 5–20 g/L PLBC or FSBC were evaluated for 2,3-BD production using <i>Paenibacillus polymyxa</i> as a biocatalyst. An optimized medium containing nutrients and buffers served as control. While 2,3-BD production in the ADE cultures was 0.5-fold of the maximum generated in the control cultures, 2,3-BD produced in the PLBC and FSBC cultures were ~1.3-fold more than the control (33.6 g/L). Cost analysis showed that ADE and biochar can replace mineral nutrients and buffers in the medium with the potential to make bio-based 2,3-BD production profitably feasible.