2026-04-27T23:23:45Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/235242025-03-26T16:41:31Zcom_10324_1173com_10324_931com_10324_894com_10324_31059com_10324_954col_10324_1371col_10324_31061

Nitrous Oxide Abatement Coupled with Biopolymer Production As a Model GHG Biorefinery for Cost-Effective Climate Change Mitigation Frutos, Osvaldo D. Cortés Martín, Irene Cantera Ruiz De Pellon, Sara Arnáiz, Esther Lebrero Fernández, Raquel Muñoz Torre, Raúl Producción Científica 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. 2017-06-19T08:43:26Z 2017-06-19T08:43:26Z 2017 info:eu-repo/semantics/article Environmental Science & Technology, 2017, 51 (11), pp 6319–6325 http://uvadoc.uva.es/handle/10324/23524 10.1021/acs.est.7b00643 Environmental Science & Technology eng http://pubs.acs.org/doi/abs/10.1021/acs.est.7b00643 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 International American Chemical Society SI