Purification of Biogas by CO2 Reduction in Biogas Using Potassium Hydroxide Solution (KOH) in a Packed Tower
- DOI
- 10.2991/aer.k.210603.055How to use a DOI?
- Keywords
- Biogas, Biogas Purification, Potassium Hydroxide, Packed Tower
- Abstract
This research is about the absorption of carbon dioxide gas (CO2) in biogas processed from tapioca waste using a solution of potassium hydroxide (KOH) as absorbent. The purpose of this research was to determine the effect of gas flow rate and the flow rate of KOH solution to the absorption of CO2. The absorption reduces the CO2content in the biogas, and therefore the methane CH4 increases. As a result, the heating value of the CH4is alsoincreasing. The research was carried out by using chemical absorption,a packed tower with a diameter of 7.5 cm and 127 cm height. The flow rates ofthe KOH flow rate vary with 1, 2, and 3 liters/minute, and a variation of gas flow rate are 2, 3, 4, and 5 liters/minute. The concentration of KOH was 0.75 M and the contact time was 10 minutes. Analysis of gas samples of input and output gas was carried out using Gas Chromatography 2014-AT SHIMADZU Corp 08128. The results show that the greater the flow rate of gas, the lower the absorption of CO2. On the other hand, the higher the flow rate of the solvent, the higher thepercentage of absorbed CO2. The highest percentage of absorbed CO2 is at a gas flow rate of 2 liters/minute and 4 liters/minute with the percentage absorption of CO2of 95.98 and 97.623%respectively.
- Copyright
- © 2021, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - U N Pamiliani AU - E Purba PY - 2021 DA - 2021/06/04 TI - Purification of Biogas by CO2 Reduction in Biogas Using Potassium Hydroxide Solution (KOH) in a Packed Tower BT - Proceedings of the International Conference on Sustainable Biomass (ICSB 2019) PB - Atlantis Press SP - 314 EP - 317 SN - 2352-5401 UR - https://doi.org/10.2991/aer.k.210603.055 DO - 10.2991/aer.k.210603.055 ID - Pamiliani2021 ER -