Scrutinizing compost properties and their impact on methane oxidation efficiency

Recent applications of vibrational mid-Infrared (IR) spectroscopy for studying soil components: a review

“…It has also been applied to study many other agricultural related aspects such as the composition of different coal ranks (Chen, et al, 2012;Li, et al, 2010) and their soluble SOM fraction (Gezic, et al, 2012;Ghosh, et al, 2009), the chemistry of waste and compost materials (Huber-Humer, et al, 2011;Salati, et al, 2013;Smidt and Meissl, 2007), the decomposition processes of forest litter (Duboc, et al, 2012;Nault, et al, 2009;Osono, et al, 2011;Tatzber, et al, 2010), the chemical structure of pyrogenic organic matter (OM) Nocentini, et al, 2010) and the behaviour of chemical compounds adsorbed on clays (Aochi and Farmer, 2011;Dorado, et al, 2010). The principle of the technique is based on the scattering of the incident light in all directions when it is absorbed by powders and/or a rough surface.…”

Methane oxidation potential of boreal landfill cover materials: The governing factors and enhancement by nutrient manipulation

“…The fact that the MOPs in Ämmässuo were on average 10-fold higher (4.16 lmol g dw À1 h À1 ) than the MOPs in Tarastenjärvi (0.41 lmol g dw À1 h À1 , excluding Tj4), could be resulting from the Ämmässuo cover material, compost. Compost is considered as suitable support material for methanotrophs due to its beneficial characteristics (Huber-Humer et al, 2011) and, accordingly, the Ämmässuo compost samples studied here had higher moisture and organic matter contents on average than the samples of other soil types. Furthermore, the compost samples collected from Ämmässuo contained on average more NO 3 À than the soil samples of Tarastenjärvi, which was shown to have a significant positive linear relationship with MOP by the MLR analysis.…”

“…These soil covers contain methanotrophs, naturally occurring bacteria, that utilise CH 4 as a sole source of carbon and energy and oxidise it to carbon dioxide (CO 2 ), water and new biomass (Hanson and Hanson, 1996). CH 4 oxidation potential (MOP) of landfill cover material is affected by several factors, including pH, moisture and organic matter contents of the soil, nutrient availability (nitrogen, phosphorus) and physical properties enabling gas diffusion (Einola et al, 2007;Huber-Humer et al, 2011Röwer et al, 2011;Wang et al, 2011). When the cover structure is particularly designed for supporting CH 4 oxidation, such as intermediate covers of active landfills and final covers of closed landfills, some of the parameters can be optimised for methanotrophs via material selection.…”

Application of Multivariate Data Analyses in Waste Management

“…Ecke et al [71] investigated samples from three different landfill sites by the biochemical methane potential and used DA for data evaluation. Huber-Humer et al [77] applied DA to determine methane oxidation efficiency of different materials based on chemical and physical variables. Smidt et al [66,76] used DA to differentiate the infrared spectral [76] and thermal patterns [66] of municipal solid waste incinerator (MSWI) bottom ash before and after CO2 uptake.…”