Abstract
The wastewater from agro-industry treated with the biological treatment cannot produce the biogas because of its low COD level and its low organic content. In this research, the co-digestion with decanter cake will improve the biogas yield and biogas production of wastewater. The effect of three parameters (i.e., type of wastewater, mixing and mesophilic temperature) will be evaluated in batch digesters under anaerobic condition. Moreover, the study determines the biogas production potential of several mixtures and that of wastewater alone. The co-digestion of decanter cake with rubber block wastewater of the R4 (wastewater 200 ml with decanter cake 8 g) produces the highest biogas yield 3,809 mL CH4/g COD removal and the percentage maximum methane gas is 66.7%. The experimental result shows that the mixing and mesophilic temperature have no significant effect on the biogas potential production. The co-digestion of decanter cake with rubber block wastewater provides the highest biogas yield potential production in the ambient temperature. The experimental results reveal that the decanter cake can be potential sources for biogas production.
Highlights
Biochemical methane potential test can determine the methane yield of an organic matter substrate by anaerobic digestion under specific condition and media
The results presented in this study are an average from the two repeated experiments
The aim of this study is to analyze the effect of the biogas yield performance in biogas production using various parameters
Summary
Biochemical methane potential test can determine the methane yield of an organic matter substrate by anaerobic digestion under specific condition and media. A Biochemical Methane Potential (BMP) assay provides a measure of an anaerobic digestibility of a given substrate. The use of BMPs provides a relatively inexpensive and repeatable method for relative comparisons of the anaerobic digestibility and potential biogas production among various substrates. The BMP can be used to determine the amount of organic carbon in a given material that can be anaerobically converted to methane. The BMP can evaluate the potential biogas production efficiency of the anaerobic process on a given material. The BMP assay process was first established by Owen et al (1979) as a simple and inexpensive procedure to monitor relative anaerobic biodegradability of substrate
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