title: Rapid assessment of methanotrophic capacity of compost-based materials considering the effects of air-filled porosity, water content and dissolved organic carbon.
abstract: Since the global warming potential of CH4 is 25 times that of CO2 on a 100-year time horizon, the development of methanotrophic applications for the conversion of CH4 to CO2 is emerging as an area of interest for researchers and practicing engineers. Compost exhibits most of the characteristics required for methanotroph growth media and has been used in several projects. This paper presents results from a study that was undertaken to assess the influence of physical and chemical characteristics of compost-based materials on the biological oxidation of CH4 when used in methane biofilters. The results showed that easily-measurable parameters, such as air filled porosity, water content and dissolved organic carbon, are correlated with maximum CH4 removal rates. The results obtained were used to develop an empirical relationship that could be regarded as a rapid assessment tool for the estimation of the performance of compost-based materials in engineered methanotrophic applications.
authors.affiliation: Centre for Environmental Engineering Research and Education (CEERE), Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada.
authors.forename: Uriel
authors.initials: U
authors.lastname: Mancebo
authors.affiliation: Centre for Environmental Engineering Research and Education (CEERE), Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada. Electronic address: jhettiar@ucalgary.ca.
authors.forename: J Patrick A
authors.initials: JP
authors.lastname: Hettiaratchi
mesh_terms: D000388:Air; D000537:Aluminum Oxide / Q000737:chemistry; D000704:Analysis of Variance; D002244:Carbon / Q000737:chemistry*; D008697:Methane / Q000378:metabolism*; D008962:Models, Theoretical; D009930:Organic Chemicals / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D016062:Porosity; D015203:Reproducibility of Results; D012722:Sewage / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D012987:Soil / Q000737:chemistry*; D012995:Solubility; D013696:Temperature; D014867:Water / Q000737:chemistry*; D014934:Wood / Q000737:chemistry
chemical_list: D009930:Organic Chemicals; D012722:Sewage; D012987:Soil; D014867:Water; C003076:Perlite; D002244:Carbon; D012822:Silicon Dioxide; D000537:Aluminum Oxide; D008697:Methane
keywords: Air filled porosity; Dissolved organic carbon; Filter media; Methanotrophy; Water content