title: Evaluation of methane production and macronutrient degradation in the anaerobic co-digestion of algae biomass residue and lipid waste.
abstract: Algae biomass residue was co-digested with lipid-rich fat, oil, and grease waste (FOG) to evaluate the effect on methane yield and macronutrient degradation. Co-digestion of algae biomass residue and FOG, each at 50% of the organic loading, allowed for an increased loading rate up to 3g VS/Ld, resulting in a specific methane yield of 0.54 L CH(4)/g VSd and a volumetric reactor productivity of 1.62 L CH(4)/Ld. Lipids were the key contributor to methane yields, accounting for 68-83% of the total methane potential. Co-digestion with algae biomass residue fractions of 33%, 50%, and 67% all maintained lipid degradations of at least 60% when the organic loading rate was increased to 3g VS/Ld, while synergetic effects on carbohydrate and protein degradation were less evident with increased loading.
authors.affiliation: Department of Food, Agricultural and Biological Engineering, The Ohio State University, Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691-4096, USA.
authors.forename: Stephen
authors.initials: S
authors.lastname: Park
authors.forename: Yebo
authors.initials: Y
authors.lastname: Li
mesh_terms: D000693:Anaerobiosis; D018533:Biomass; D019149:Bioreactors; D050260:Carbohydrate Metabolism; D050356:Lipid Metabolism; D008697:Methane / Q000378:metabolism*; D058086:Microalgae / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism
chemical_list: D011506:Proteins; D008697:Methane