title: Correlation between biogas yield and chemical composition of energy crops.
abstract: The scope of this study was to investigate the influence of the chemical composition of energy crops on biogas and methane yield. In total, 41 different plants were analyzed in batch test and their chemical composition was determined. For acid detergent lignin (ADL) content below 10% of total solids, a significant negative correlation for biogas and methane yields (r≈-0.90) was observed. Based on a simple regression analysis, more than 80% of the sample variation can be explained through ADL. Based on a principal component analysis and multiple regression analysis, ADL and hemicellulose are suggested as suitable model variables for biogas yield potential predictions across plant species.
authors.affiliation: Institute for Agricultural Engineering and Animal Husbandry, Bavarian State Research Center for Agriculture, Am Staudengarten 3, 85354 Freising, Germany. Electronic address: vasilis.dandikas@lfl.bayern.de.
authors.forename: V
authors.initials: V
authors.lastname: Dandikas
authors.affiliation: Department of Agriculture and Food Economy, Hochschule Weihenstephan-Triesdorf, Am Hofgarten 1, 85354 Freising, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Heuwinkel
authors.affiliation: Institute for Agricultural Engineering and Animal Husbandry, Bavarian State Research Center for Agriculture, Am Staudengarten 3, 85354 Freising, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Lichti
authors.affiliation: Chair of Urban Water Systems Engineering, Technische Universität München, Am Coulombwall 8, 85748 Garching, Germany.
authors.forename: J E
authors.initials: JE
authors.lastname: Drewes
authors.affiliation: Chair of Urban Water Systems Engineering, Technische Universität München, Am Coulombwall 8, 85748 Garching, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Koch
mesh_terms: D056804:Biofuels / Q000032:analysis*; D018556:Crops, Agricultural / Q000737:chemistry*; D008697:Methane / Q000096:biosynthesis; D025341:Principal Component Analysis; D012044:Regression Analysis; D015203:Reproducibility of Results
chemical_list: D056804:Biofuels; D008697:Methane
keywords: Batch test; Biogas yield potential; Empirical model; Lignocellulose; Regression analysis