Repurposing anaerobic digestate for economical biomanufacturing and water recovery.

Autor: Kumar S; Fermentation Science Group, Department of Food Science, Babcock Hall, University of Wisconsin-Madison, 1605 Linden Drive, Madison, WI, 53706, USA., Posmanik R; Agricultural Research Organization, Volcani Institute Newe Ya'ar Research Center, Rishon LeZion, Israel., Spatari S; Faculty of Civil and Environmental Engineering, Technion, Israel Institute of Technology, Haifa, Israel., Ujor VC; Fermentation Science Group, Department of Food Science, Babcock Hall, University of Wisconsin-Madison, 1605 Linden Drive, Madison, WI, 53706, USA. ujor@wisc.edu.
Jazyk: angličtina
Zdroj: Applied microbiology and biotechnology [Appl Microbiol Biotechnol] 2022 Feb; Vol. 106 (4), pp. 1419-1434. Date of Electronic Publication: 2022 Feb 05.
DOI: 10.1007/s00253-022-11804-6
Abstrakt: Due to mounting impacts of climate change, particularly increased incidence of drought, hence water scarcity, it has become imperative to develop new technologies for recovering water from nutrient-rich, water-replete effluents other than sewage. Notably, anaerobic digestate could be harnessed for the purpose of water recovery by repurposing digestate-borne minerals as nutrients in fermentative processes. The high concentrations of ammonium, phosphate, sulfate, and metals in anaerobic digestate are veritable microbial nutrients that could be harnessed for bio-production of bulk and specialty chemicals. Tethering nutrient sequestration from anaerobic digestate to bio-product accumulation offers promise for concomitant water recovery, bio-chemical production, and possible phosphate recovery. In this review, we explore the potential of anaerobic digestate as a nutrient source and as a buffering agent in fermentative production of glutamine, glutamate, fumarate, lactate, and succinate. Additionally, we discuss the potential of synthetic biology as a tool for enhancing nutrient removal from anaerobic digestate and for expanding the range of products derivable from digestate-based fermentations. Strategies that harness the nutrients in anaerobic digestate with bio-product accumulation and water recovery could have far-reaching implications on sustainable management of nutrient-rich manure, tannery, and fish processing effluents that also contain high amounts of water. KEY POINTS: • Anaerobic digestate may serve as a source of nutrients in fermentation. • Use of digestate in fermentation would lead to the recovery of valuable water.
(© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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