Biogas Potential from the Investigation of Paddy Straw Co-digestion with Cow Dung

Tengku Roslina Tuan Yusof; Mohd Faiz Mat Saat; Nurhadijah Zainalabidin; Nor'aini Abdul Rahman; Hasfalina Che Man

doi:10.58915/aset.v4i2.2711

Authors

Tengku Roslina Tuan Yusof Universiti Malaysia Perlis
Mohd Faiz Mat Saat Universiti Kebangsaan Malaysia
Nurhadijah Zainalabidin Universiti Malaysia Perlis
Nor'aini Abdul Rahman Universiti Putra Malaysia
Hasfalina Che Man Universiti Putra Malaysia

DOI:

https://doi.org/10.58915/aset.v4i2.2711

Keywords:

Paddy straw, Cow dung, Anaerobic digestion, Biogas

Abstract

Paddy straw waste (PS) is an organic waste that is disposed of in open land after the preparation of rice harvest, which is generated in equal or greater quantities than the rice itself. Generally, it is disposed of in open land, which increases the amount of anthropogenic gases. Converting it into useful energy or a value-added product may reduce the disposal problem and anthropogenic activity. In this study, PS was co-digested with cow dung (CD) to produce biogas via anaerobic digestion. For this purpose, PS was mixed with CD at different proportions, 50:50, 40:60, 30:70, 20:80, and 0:100 on a mass basis. The samples were used in five different anaerobic digesters. The samples were kept in different anaerobic digesters for the study. The effects of important input parameters, such as pH and the Carbon-to-Nitrogen (C/N) ratio, on biogas production were studied. A maximum biogas production was obtained from the co-digestion of a substrate containing 30% ps and 70% Cd, with a digestion time of 20 days, and d3 showed a maximum pH value of 7.16. Further, the collected biogas from the digesters was characterized to ensure its suitability for use as a renewable fuel.

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