Biochemical methane potential (BMP) from anaerobic co-digestion of sewage sludge and decanter cake

The Wood and Biofiber International Conference 2017

轻工业生物科学

Khairul Anuar, N.^1 ; Che Man, H.^1 ; Idrus, S.^2 ; Nik Daud, N.N.^2

Department of Biological and Agricultural Engineering, Faculty of Engineering, Universiti Putra Malaysia, Selangor

43400, Malaysia^1

Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, Selangor

43400, Malaysia^2

关键词: Anaerobic co-digestion;    Batch fermentation;    Biochemical methane potential;    Biogas production;    Electricity supply;    High carbon content;    Mesophilic temperature;    Water displacement;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/368/1/012027/pdf
DOI  :  10.1088/1757-899X/368/1/012027

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Nowadays, anaerobic co-digestion has become a focus of interest in generating methane gas for electricity supply. In this study, a biochemical methane potential (BMP) test was conducted to determine biogas production potential from anaerobic co-digestion of sewage sludge and decanter cake. Sewage sludge has high organic content and decanter cake has a high carbon content (42.70%). Batch fermentation were performed in 125mL serum bottle with 100 mL working volume and incubated for 10 days at mesophilic temperature (38°C) in a water bath. Each bottle containing sewage sludge and decanter cake at feedstocks to inoculums (F/I) ratios of 1:0, 1:1 and 2:1. Daily biogas productions were collected using water displacement method. The highest cumulative biogas produces 0.25 L per day at the F/I ratio of 1:1. However, it was observed that the anaerobic co-digestion of sewage sludge with decanter cake at F/I ratio 2:1 provides higher methane yield production than that provided by the sewage sludge alone (1:0) and F/I ratio of 1:1. The results obtained revealed that the co-digestion of sewage sludge and decanter cake has a potential to produce methane.