Organic waste streams as feedstock for the production of high volume-low value products.

Pratik R Pawar, Poornima Rao, Gunjan Prakash, Arvind M Lali

Environmental science and pollution research international 2021 Mar

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Valorisation of organic wastes to produce industrially relevant commodity products is a sustainable, cost-effective and viable alternative providing a green platform for chemical production while simultaneously leading to waste disposal management. In the present study, organic wastes such as agricultural residue-derived sugars, oilseed meals, poultry waste and molasses were used for substituting expensive organic fermentation medium components. Moorella thermoacetica and Aurantiochytrium limacinum were adapted on these waste-derived hydrolysates to produce high volume-low value products such as bio-acetic acid (80% theoretical yields) and oil-rich fish/animal feed (more than 85% dry cell weight as compared with conventional nutrient sources) respectively. Use of these waste-derived nutrients led to ~ 75% and ~ 90% reduction in media cost for acetic acid and oil-rich biomass production respectively as compared with that of traditionally used high-priced medium components. The strategy will assist in the cost reduction for high volume-low value products while also ensuring waste recovery.

Citation

Pratik R Pawar, Poornima Rao, Gunjan Prakash, Arvind M Lali. Organic waste streams as feedstock for the production of high volume-low value products. Environmental science and pollution research international. 2021 Mar;28(10):11904-11914