Abstract: Bulrush is a plant that is available abundantly however it has not been utilized well. During this time, it was utilized just as animal feedstock, even it is considered as weeds. Bulrush has cellulose, glucose, and starch content that can be used as material of ethanol production. This research was aimed to review hydrolysis process, fermentation process, batch distillation process, and search for alternative material for bioethanol production. In bioethanol making process, three processes were done such hydrolysis process biologically by using enzyme and chemically by using HCl.While fermentation process used Saccharomyces Cerevisiae and batch distillation. After those three processes were done, high level of bioethanol content was obtained in 95%-96% and it could be concluded that bulrush can be used as alternative material of bioethanol production.

• Publication Date: 08-May-2016
• DOI: 10.15224/978-1-63248-136-8-22
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Abstract: This paper aims to explain a project which designed a system to compress and store the biogas in such a way that it will be suitable for cooking gas in rural communities, especially in Ngentak Village, Poncosari, Bantul, DIY Province in Indonesia. After water content and CO2 have been removed from biogas methane from digester by Diethylen Glycol and Natrium Hydroxide (NaOH), water has to be reduced until 2.5 ml by 15 ml of glycol content and NaOH 30% to reduce 1.34% of CO2 content and 94.59% of gas methane. In addition, biogas compression and bottling process consist of different steps such as biogas purification (H2O and CO2 removal unit), compression and bottling. As a result, this study has succeeded in compressing biogas into 8,78 lbs and LPG cylinder reaching maximum level in pressure gauge.

• Publication Date: 24-Sep-2017
• DOI: 10.15224/978-1-63248-136-8-23
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