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Title: Separation and biosynthesis of value-added compounds from food-processing wastewater: towards sustainable wastewater resource recovery
Authors: Lee, Sze Ying
Stuckey, David C.
Keywords: Engineering::Chemical engineering
Engineering::Environmental engineering::Water treatment
Issue Date: 2022
Source: Lee, S. Y. & Stuckey, D. C. (2022). Separation and biosynthesis of value-added compounds from food-processing wastewater: towards sustainable wastewater resource recovery. Journal of Cleaner Production, 357, 131975-.
Project: NRF-CRP21-2018-0006 
Journal: Journal of Cleaner Production 
Abstract: Effluents from the food-processing sector often contain significant concentrations of valuable resources, e.g., proteins, lipids, antibiotics, and are free of heavy metals and other toxic contaminants. In addition, food processing wastewaters are one of the largest sources of high-strength wastewaters in the World. Hence, food-processing wastewater holds great potential for resource recovery and reuse, creating additional economic value and concomitantly mitigating environmental contamination. Despite all these factors, very little has been done to analyze the composition of these wastewaters and look for valuable products which can then be separated, or to further ferment these complex wastewaters into valuable products. This review summarizes the application of different approaches to upcycle compounds lost within food-processing wastewater streams by regenerating them into value-added products. The physicochemical separation techniques to recover valuable compounds from wastewater, including membrane technology, foam fractionation, precipitation, adsorption, solvent extraction, and aqueous two-phase system, are critically discussed. In addition, the biotransformation approaches based on enzymes or microorganisms utilizing nutrients from food-processing wastewater as low-cost substrates to produce useful products are also addressed. This includes the production of microalgal biomass with high-value intracellular products in wastewater treatment systems. Finally, some possible future research directions to enhance the circular economy in the food processing industry are proposed.
ISSN: 0959-6526
DOI: 10.1016/j.jclepro.2022.131975
Rights: © 2022 The Authors. All rights reserved. This paper was published by Elsevier Ltd. in Journal of Cleaner Production and is made available with permission of The Authors.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:NEWRI Journal Articles
SCELSE Journal Articles

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