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Techno-economic evaluation of simultaneous production of extra-cellular polymeric substance (EPS) and lipids by Cloacibacterium normanense NK6 using crude glycerol and sludge as substrate.

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Ram, Saurabh Kumar; Kumar, Lalit; Tyagi, Rajeshwar Dayal; Drogui, Patrick (2018). Techno-economic evaluation of simultaneous production of extra-cellular polymeric substance (EPS) and lipids by Cloacibacterium normanense NK6 using crude glycerol and sludge as substrate. Water Science and Technology , vol. 77 , nº 9. p. 2228-2241. DOI: 10.2166/wst.2018.140.

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Résumé

This study used the technical, economic analysis tool, SuperPro designer in evaluating a novel technology for simultaneous production of extracellular polymeric substance (EPS) and biodiesel using crude glycerol and secondary sludge. As renewable energy sources are depleting, the process utilizes municipal sewage sludge for production of EPS and biodiesel along with crude glycerol, which is a waste byproduct of biodiesel industry providing an alternate way for disposal of municipal sludge and crude glycerol. Newly isolated Cloacibacterium normanense NK6 is used as micro-organism in the study as it is capable of producing high EPS concentration, using activated sludge and crude glycerol as the sole carbon source. The technology has many environmental and economic advantages like the simultaneous production of two major products: EPS and lipids. Sensitivity analysis of the process revealed that biomass lipid content is a most significant factor where unit cost production of biodiesel was highly sensitive to lipid content during bioreaction. B7 biodiesel unit production cost can be lowered from $1 to $0.6 if the lipid content of the biomass is improved by various process parameter modifications.

Type de document: Article
Mots-clés libres: biodiesel; crude glycerol valorization; EPS (extracellular polymeric substance); lipids; sludge valorization
Centre: Centre Eau Terre Environnement
Date de dépôt: 18 oct. 2018 18:32
Dernière modification: 27 mars 2019 04:00
URI: http://espace.inrs.ca/id/eprint/7652

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