RT info:eu-repo/semantics/article
T1 Polyhydroxyalkanoates (PHA) production from biogas in waste treatment facilities: Assessing the potential impacts on economy, environment and society
A1 Pérez Martínez, Víctor
A1 Mota Filho, Cesar Rossas
A1 Muñoz Torre, Raúl
A1 Lebrero Fernández, Raquel
K1 Biogas valorization
K1 Valorización de biogás
K1 Biopolymers
K1 Biopolímeros
K1 Circular economy
K1 Economía circular
K1 Methanotrophic bacteria
K1 Bacterias metanotróficas
AB Using the biogas generated from organic waste anaerobic treatment to produce polyhydroxyalkanoates (PHAs) has emerged as an attractive alternative to heat and power generation (CHP) in waste treatment plants. The sustainability of biogas combustion for CHP, biogas bioconversion into PHA and a combination of both scenarios was compared in terms of environmental impact, process economics and social responsibility according to the IChemE Sustainability Metrics. Although PHA production presented higher investment and operational costs, a comparable economic performance was observed in all biogas valorization scenarios regarding net present value (0.77 M€) and internal rate of return (6.4 ± 0.2%) due to the higher market value of biopolymers. The PHA production entailed a significant reduction of atmospheric acidification and odor emissions compared to CHP despite showing higher land, water, chemicals and energy requirements. Job creation associated to biopolymer industry and the increasing public demand for bioproducts were identified as fundamental aspects for enhancing social and local acceptance of waste processing facilities. This study demonstrated that PHA production from biogas constitutes nowadays a realistic alternative to CHP in waste treatment plants and that PHA can be produced at a competitive market price when biogas is used for internal energy provision (4.2 €·kg−1 PHA).
PB Elsevier
SN 0045-6535
YR 2020
FD 2020
LK http://uvadoc.uva.es/handle/10324/46543
UL http://uvadoc.uva.es/handle/10324/46543
LA eng
NO Chemosphere, 2020, vol. 255. 9 p.
NO Producción Científica
DS UVaDOC
RD 24-nov-2024