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Methodological issues in LCA of wastewater treatment combined with PHA biopolymer production

Sara Heimersson (Institutionen för kemi- och bioteknik, Kemisk miljövetenskap) ; Magdalena Svanström (Institutionen för kemi- och bioteknik, Kemisk miljövetenskap) ; Fernando Morgan-Sagastume ; Gregory Peters (Institutionen för kemi- och bioteknik, Kemisk miljövetenskap) ; Alan Werker
The proceedings of The 6th International Conference on Life Cycle Management (2013)
[Konferensbidrag, övrigt]

Production of polyhydroxyalkanoates (PHAs) by mixed microbial cultures utilising the organic content of wastewaters is one of the technologies studied in the EU project ROUTES. When comparing the life-cycle environmental impacts of simultaneous wastewater treatment and production of PHA-rich biomass to traditional wastewater and solids treatment, the handling of this multi-functionality is critical for the results. Only one LCA of such a system has been found in the literature. The current paper identifies substitution and allocation based on chemical oxygen demand removal as two possible options to account for the multi-functionality of the system. Examples based on literature data were used to show that for global warming potential, the choice of allocation method can substantially affect the results.

Nyckelord: Life cycle assessment, polyhydroxyalkanoates, system boundaries, allocation, bio-production



Denna post skapades 2013-08-12. Senast ändrad 2016-08-15.
CPL Pubid: 181086

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Kemisk miljövetenskap (2005-2014)

Ämnesområden

Miljöledning
Hållbar utveckling
Vattenteknik
Miljöanalys och bygginformationsteknik
Miljöteknik

Chalmers infrastruktur