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oai:uvadoc.uva.es:10324/351652025-03-26T19:10:03Zcom_10324_35294com_10324_952com_10324_894com_10324_1173com_10324_931com_10324_31059com_10324_954col_10324_35295col_10324_1371col_10324_31061

Muñoz Torre, Raúl Soto Guzmán, Marvelia Cenit Zúñiga, Cristal Revah, Sergio 2019-03-21T11:29:58Z 2019-03-21T11:29:58Z 2018 Journal of Environmental Management, 2018, Volume 217, Pages 247-252 0301-4797 http://uvadoc.uva.es/handle/10324/35165 10.1016/j.jenvman.2018.03.097 Producción Científica This study aimed at systematically comparing the potential of two empirical methods for the estimation of the volumetric CH4 mass transfer coefficient (klaCH4), namely gassing-out and oxygen transfer rate (OTR), to describe CH4 biodegradation in a fermenter operated with a methanotrophic consortium at 400, 600 and 800 rpm. The klaCH4 estimated from the OTR methodology accurately predicted the CH4 elimination capacity (EC) under CH4 mass transfer limiting conditions regardless of the stirring rate (∼9% of average error between empirical and estimated ECs). Thus, empirical CH4-ECs of 37.8 ± 5.8, 42.5 ± 5.4 and 62.3 ± 5.2 g CH4 m−3 h−1 vs predicted CH4-ECs of 35.6 ± 2.2, 50.1 ± 2.3 and 59.6 ± 3.4 g CH4 m−3 h−1 were recorded at 400, 600 and 800 rpm, respectively. The rapid Co2+-catalyzed reaction of O2 with SO3−2 in the vicinity of the gas-liquid interphase during OTR determinations, mimicking microbial CH4 uptake in the biotic experiments, was central to accurately describe the klaCH4. Ministerio de Economía, Industria y Competitividad - FEDER (Project CTM 2015–70442-R and Red NOVEDAR) application/pdf eng Elsevier info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 International Tratamiento de gases Gas treatment Metano Methane A systematic comparison of two empirical gas-liquid mass transfer determination methodologies to characterize methane biodegradation in stirred tank bioreactors info:eu-repo/semantics/article https://www.sciencedirect.com/science/article/pii/S030147971830330X NO