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1.
Building of mini digester for mesophilic anaerobic digestion
Bogomir Muršec, Peter Vindiš, 2009, strokovni članek

Opis: Anaerobic digestion is the biological degradation of organic material in the absence of air andmayimply environmental benefits with regard to waste treatment, pollution reduction, energy production, and improvements in agricultural practices. Ananaerobic digester is a system that harnesses this natural process to treat waste, produce biogas that can be converted to heat and electricity and anaerobic digestate, a soil improving material. The paper presents the building of a mini digester for mesophilic anaerobic digestion.With the mini digester the amount of biogas production (methane) from different organic wastes is observed. The basic structure is made of stainless steel, on which other components are fixed. The most important components are the eudiometers, pump and heater with thermostat, fermenters, thermometer and barometer. The experiment is made according to DIN 38 414, part 8. After building of a mini digester some experiments with different organic materials are made.
Ključne besede: mini digester, mesophilic anaerobic digestion, organic wastes
Objavljeno: 11.07.2017; Ogledov: 781; Prenosov: 72
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2.
Methodology for determination of anaerobic digestion kinetics using a bench top digester
Marko Tramšek, Andreja Goršek, Peter Glavič, 2007, izvirni znanstveni članek

Opis: This paper presents a methodology for determining the microbial growth kinetics of an ideal anaerobic process in a non-ideal laboratory anaerobic digester (Armfield). Some laboratory experiments were performed, to confirm the proposed methodology. Having the same zero biomass concentration, some process parameters were changed and their influence on substrate outlet concentration was monitored. The specific growth rate of the biomass, the saturation constant of the substrate, and the yield coefficient were calculated, on the basis of the measured values. These parameters enabled us to perform a dynamic simulation of an anaerobic process in ideal continuously-stirred tank reactors (CSTR). The results represented the mass concentration profiles for substrate and biomass, from which the time required for reaching the steady state (60 d), where the operation is optimal, could be determined. The laboratory anaerobic digester provided operational process data, which are applicable for wastewater treatment plant design purposes.
Ključne besede: wastewater treatment, anaerobic digester, kinetics, dynamic simulation
Objavljeno: 31.05.2012; Ogledov: 1640; Prenosov: 88
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