Proceedings of the International Conference on Sustainable Biomass (ICSB 2019)

Purification of Biogas by CO2 Reduction in Biogas Using Potassium Hydroxide Solution (KOH) in a Packed Tower

Authors
U N Pamiliani, E Purba
Corresponding Author
E Purba
Available Online 4 June 2021.
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/).

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Volume Title
Proceedings of the International Conference on Sustainable Biomass (ICSB 2019)
Series
Advances in Engineering Research
Publication Date
4 June 2021
ISBN
10.2991/aer.k.210603.055
ISSN
2352-5401
DOI
10.2991/aer.k.210603.055How to use a DOI?
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  -