Biochemical methane potential of three-phase olive mill solid waste:Influence of temperature and supplemental enzymes  

作　　者：Rafat Al Afif Christoph Pfeifer 

机构地区：[1]Institute of Chemical and Energy Engineering,Department of Material Sciences and Process Engineering,University of Natural Resources and Life Sciences,Vienna,Muthgasse 107,1190 Vienna,Austria

出　　处：《Carbon Resources Conversion》2022年第3期248-254,共7页碳资源转化（英文）

摘　　要：Methane potential of three-phase olive mill solid waste(3POMSW)was evaluated by biochemical methane potential(BMP)tests at temperatures of 37.5◦C and 55◦C.The results have shown,that thermophilic processing has a higher methane and biogas yield by 10%and 17.2%,respectively,compared to mesophilic conditions.Concluding thermophilic conditions of 3POMSW results in higher conversion of the feedstock into biogas.The result of addition of enzymes(MethaPlus,Hemicellulase,PectinaseL,Amylase S and Lipase)and their mixtures to 3POMSW at 55◦C has shown that the optimum mixture of enzymes was Metha Plus and Hemicellulase,which resulted in an increase of methane yield by 1.3%compared to the base case without addition of enzymes.Simple model equations were developed based on first-order kinetic in order to calculate the biogas yield versus the time as a function of reaction rate constant(k)and the maximum biogas yield(ymax).In this study,results have shown two different reaction rates obtained for the mixtures of enzymes with 3POMSW of 0.130 d^(-1) from t=0…14 days and 0.034 d^(-1) from t=28…63 days.The developed simple model equations can be applied for calculating the biogas yield at the time and by optimizing the process improving biological nutrient removal.

关 键 词：Three-phase olive mill solid waste Biochemical methane potential MESOPHILIC THERMOPHILIC Anaerobic digestion 

分 类 号：O64[理学—物理化学]