Evaluation of methane production and macronutrient degradation in the anaerobic co-digestion of algae biomass residue and lipid waste

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• 作者：Stephen Park ; Yebo Li ; ^{li.851@osu.edu}
• 关键词：Anaerobic digestion ; Co-digestion ; Microalgae ; Methane ; Macronutrient
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：May, 2012
• 卷：111
• 期：Complete
• 页码：42-48
• 文件大小：489 K

摘要

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 3 g VS/L d, resulting in a specific methane yield of 0.54 L CH₄/g VS d and a volumetric reactor productivity of 1.62 L CH₄/L d. 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 3 g VS/L d, while synergetic effects on carbohydrate and protein degradation were less evident with increased loading.