This research was conducted by a team from Environmental Engineering Diponegoro University led by Prof. Dr. IR. Syafrudin, CES, M.T. and ir. Winardi Dwi Nugraha, M.Si and Junaidi, ST, MT. The team also involved student members, namely Aisyah Bahrani, Hibatin Wafiroh and Dyanung Larasati. The research, titled The Effect of Grinding and Enzyme Addition on Biogas Production Optimization of Rice Husk Waste in SS-AD Conditions, was also published in Scopus Indexed International Proceedings.

This article is a media release without diminishing the significance of the originality of the research. The complete results of this research are entirely the property of Syafrudin and his research team. For more information, please send an email to udin_syaf@yahoo.com

Today, energy needs are increasing. But in Indonesia, conventional energy such as petroleum and coal is still the first choice. Whereas if used constantly can cause problems. Renewable energy is the solution to the problem that has not been used optimally. One of the potentials of renewable energy is biomass from agricultural waste, such as rice husks. Moreover, the potential of rice husks in Indonesia is huge.

It's just that this rice husk has lignin which causes it to be difficult to degrade microbes. Therefore the need for pretreatment both physically, chemically and biologically. One of the pretreatment that can be done is by enzyme tethering. So in this study grinding and enzymes were used as pretreatment. The enzymes to be used are amylase enzymes as well as cellulase.

Initially the total solids and moisture content of rice husks were analyzed. Chaff is given chemically preliminary treatment first using NaOH. The study used 18 reactors. Chaff, enzymes, aquades, rumen and urea are inserted according to the calculation of each digester and variations in enzyme concentration. Every two days for 40 days the volume of gas produced is observed.

Production of biogas from rice husk waste with SS-AD method either added amylase enzyme or cellulase, maximum biogas yield is obtained from the addition of enzymes with the largest concentration.