title: Addressing case specific biogas plant tasks: industry oriented methane yields derived from 5L Automatic Methane Potential Test Systems in batch or semi-continuous tests using realistic inocula, substrate particle sizes and organic loading.
abstract: The primary aim of the study was to develop and validate an in-house upscale of Automatic Methane Potential Test System II for studying real-time inocula and real-scale substrates in batch, codigestion and enzyme enhanced hydrolysis experiments, in addition to semi-continuous operation of the developed equipment and experiments testing inoculum functional quality. The successful upscale to 5L enabled comparison of different process configurations in shorter preparation times with acceptable accuracy and high-through put intended for industrial decision making. The adoption of the same scales, equipment and methodologies in batch and semi-continuous tests mirroring those at full scale biogas plants resulted in matching methane yields between the two laboratory tests and full-scale, confirming thus the increased decision making value of the approach for industrial operations.
authors.affiliation: Keter Invest Energetika, Pod Gricem 14, SI-1231 Ljubljana, Slovenia.
authors.forename: Sabina
authors.initials: S
authors.lastname: Kolbl
authors.affiliation: Keter Organica, Titova cesta 2a, SI-2000 Maribor, Slovenia.
authors.forename: Attila
authors.initials: A
authors.lastname: Paloczi
authors.affiliation: University of Ljubljana, Faculty of Civil and Geodetic Engineering, Hajdrihova 28, SI-1000 Ljubljana, Slovenia.
authors.forename: Jože
authors.initials: J
authors.lastname: Panjan
authors.affiliation: University of Ljubljana, Biotechnical Faculty, Department of Animal Science, Group for Microbiology and Microbial Biotechnology, Groblje 3, SI-1230 Domžale, Slovenia. Electronic address: blaz.stres@bf.uni-lj.si.
authors.forename: Blaž
authors.initials: B
authors.lastname: Stres
mesh_terms: D001331:Automation; D061249:Batch Cell Culture Techniques / Q000295:instrumentation / Q000379:methods*; D056804:Biofuels; D006868:Hydrolysis / Q000187:drug effects; D007221:Industry; D008697:Methane / Q000096:biosynthesis*; D009930:Organic Chemicals / Q000494:pharmacology*; D010316:Particle Size; D013997:Time Factors
chemical_list: D056804:Biofuels; D009930:Organic Chemicals; D008697:Methane
keywords: AMPTS; AMPTS II upscale; Anaerobic digestion; Batch; COD; FM; HRT; IWWS; MWWTP; Methane yield; OFMSW; OLR; SPMS; Semi-continuous; TIC; TKN; TS; VOA; VS; automatic methane potential test system; chemical oxygen demand; fresh matter; hydraulic retention time; industrial wastewater sludge; municipal waste water treatment plant; organic fraction of municipal solid wastes; organic loading rate; secondary paper mill sludge; total Kjeldahl nitrogen; total inorganic carbon; total solids; volatile organic acids; volatile solids