Microbial community-based polyhydroxyalkanoates (PHAs) production from wastewater: Techno-economic analysis and ex-ante environmental assessment

Bioresource Technology
Cora Fernández-DacostaAndrea Ramirez

Abstract

This work investigates the potential for polyhydroxybutyrate (PHB) production from wastewater, from a techno-economic and an environmental perspective, examining scale-up opportunities and bottlenecks prior to commercialisation. Conceptual process design, economic, environmental impacts and sensitivity analysis are developed for one fermentation process and three downstream processing routes, based on alkali, surfactant-hypochlorite and solvent treatments. Environmentally and cost-wise, the alkali treatment is the most favourable with production costs of 1.40€/kg PHB, global warming potential of 2.4kgCO2-eq/kg PHB and non-renewable energy use of 106MJ/kg PHB. The solvent-based process yields the highest costs and environmental burdens: 1.95€/kg PHB, 4.30kgCO2-eq/kg PHB and 156MJ/kg PHB. The production of PHB from wastewater is identified as an interesting alternative to pure culture-polyhydroxyalkanoates production from sugars. However, these results are not yet competitive with those for the petrochemical counterparts. Additional performance improvements may be possible, through process integration and optimisation.

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Citations

Mar 30, 2016·Bioresource Technology·J SpekreijseE L Scott
Dec 17, 2016·Applied Biochemistry and Biotechnology·Bo WuMing-Xiong He
Oct 28, 2018·Applied Microbiology and Biotechnology·Tatiana VolovaNatalia Zhila
Jul 28, 2019·Environmental Science and Pollution Research International·Álvaro Fernández-BrañaCélia Dias-Ferreira
Jun 6, 2019·Applied Biochemistry and Biotechnology·Guilherme Henrique Duarte de OliveiraJosé Alberto Domingues Rodrigues
Mar 22, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Lakshmi Machineni
Aug 24, 2017·Microbial Biotechnology·Per Halkjaer Nielsen
Feb 15, 2021·Bioresource Technology·Susanna Andreasi BassiThomas F Astrup
Feb 15, 2021·Bioresource Technology·Ángel Estévez-AlonsoAlan Werker
Mar 2, 2021·Frontiers in Bioengineering and Biotechnology·Giorgia PaglianoCristian Torri
May 8, 2021·Journal of Environmental Management·Tasso Jorge Tavares FerreiraAndré Bezerra Dos Santos
Jul 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Dattatray K BedadeRichard A Gross
Jul 20, 2021·The Science of the Total Environment·Geetanjali YadavArivalagan Pugazhendhi
Aug 5, 2021·Applied Biochemistry and Biotechnology·Shivam BholaPradeep Kumar
May 18, 2018·Environmental Science & Technology·Abbas AlloulSiegfried E Vlaeminck

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