RT info:eu-repo/semantics/article
T1 Nitrous Oxide Abatement Coupled with Biopolymer Production As a Model GHG Biorefinery for Cost-Effective Climate Change Mitigation
A1 Frutos, Osvaldo D.
A1 Cortés Martín, Irene
A1 Cantera Ruiz de Pellón, Sara
A1 Arnáiz, Esther
A1 Lebrero Fernández, Raquel
A1 Muñoz Torre, Raúl
K1 Emisiones de Gas
K1 Medio ambiente
AB N2O represents ∼6% of the global greenhouse gas emission inventory and the most important O3-depleting substance emitted in this 21st century. Despite its environmental relevance, little attention has been given to cost-effective and environmentally friendly N2O abatement methods. Here we examined, the potential of a bubble column (BCR) and an internal loop airlift (ALR) bioreactors of 2.3 L for the abatement of N2O from a nitric acid plant emission. The process was based on the biological reduction of N2O by Paracoccus denitrificans using methanol as a carbon/electron source. Two nitrogen limiting strategies were also tested for the coproduction of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) coupled with N2O reduction. High N2O removal efficiencies (REs) (≈87%) together with a low PHBV cell accumulation were observed in both bioreactors in excess of nitrogen. However, PHBV contents of 38–64% were recorded under N limiting conditions along with N2O-REs of ≈57% and ≈84% in the ALR and BCR, respectively. Fluorescence in situ hybridization analyses showed that P. denitrificans was dominant (>50%) after 6 months of experimentation. The successful abatement of N2O concomitant with PHBV accumulation confirmed the potential of integrating biorefinery concepts into biological gas treatment for a cost-effective GHG mitigation.
PB American Chemical Society
YR 2017
FD 2017
LK http://uvadoc.uva.es/handle/10324/23524
UL http://uvadoc.uva.es/handle/10324/23524
LA eng
NO Environmental Science & Technology, 2017, 51 (11), pp 6319–6325
NO Producción Científica
DS UVaDOC
RD 21-dic-2024