title: Disintegration in the biogas sector--technologies and effects.
abstract: Pretreatment of organic material prior to anaerobic digestion is seen as an option to increase the overall efficiency of the process. An overview of physical, chemical, and biological disintegration (DT) of substrates in the biogas sector is given. The energy demands DT were surveyed. The technologies were evaluated by reference to the Technology Readiness Assessment Guide of the U.S. Department of Energy. The evaluation focuses on ligno-cellulosic substrates like straw. Data of a survey among biogas plant operators were analyzed regarding the prevalence of disintegration technology classes in Germany. Furthermore, biochemical methane potential tests were conducted in laboratory scale to determine the specific methane yields of un-/treated barley straw (thermal pressure hydrolysis (TPH)). A methane potential of 228 ml CH4/g VS was measured for untreated barley straw; and of 251 ml CH4/g VS for TPH-straw (190 °C, 30 min). The reaction rates in BMP were calculated between 0.0976 and 0.1443 d(-1).
authors.affiliation: Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, D-04347 Leipzig, Germany. Electronic address: britt.schumacher@dbfz.de.
authors.forename: Britt
authors.initials: B
authors.lastname: Schumacher
authors.affiliation: Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, D-04347 Leipzig, Germany.
authors.forename: Harald
authors.initials: H
authors.lastname: Wedwitschka
authors.affiliation: Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, D-04347 Leipzig, Germany.
authors.forename: Josephine
authors.initials: J
authors.lastname: Hofmann
authors.affiliation: Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, D-04347 Leipzig, Germany.
authors.forename: Velina
authors.initials: V
authors.lastname: Denysenko
authors.affiliation: Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, D-04347 Leipzig, Germany.
authors.forename: Helge
authors.initials: H
authors.lastname: Lorenz
authors.affiliation: Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, D-04347 Leipzig, Germany.
authors.forename: Jan
authors.initials: J
authors.lastname: Liebetrau
mesh_terms: D061249:Batch Cell Culture Techniques; D056804:Biofuels / Q000191:economics; D001709:Biotechnology / Q000191:economics / Q000379:methods*; D001467:Hordeum / Q000737:chemistry; D007700:Kinetics; D008697:Methane / Q000096:biosynthesis; D014866:Waste Products / Q000032:analysis
chemical_list: D056804:Biofuels; D014866:Waste Products; D008697:Methane
keywords: Anaerobic digestion; Barley straw; Pre-treatment; Steam explosion; Technology Readiness Level