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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2017) [Effective from January 1, 2017]For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2015: 85.95
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95
For more details click here
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2015: 85.95
NAAS RATING 2017: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(4): 1178-1183
DOI: https://doi.org/10.20546/ijcmas.2017.604.144


Biogas Purification using Coconut Shell Based Granular Activated Carbon by Pressure Swing Adsorption
E.Akila*, S. Pugalendhi and G. Boopathi
Department of Bioenergy, AEC & RI, TNAU, Coimbatore- 03, India
*Corresponding author
Abstract:

Biogas is one of the most important renewable energy source. Biogas normally contains 55 – 65% methane (CH4) and 45 – 55% carbon dioxide (CO2) and trace amounts of hydrogen sulphide (H2S). Raw biogas cannot be used as vehicle fuel as it contains CO2 and H2S which lowers the calorific value and causes corrosion to the storage vessel respectively. Enriching the biogas by removing CO2 and H2S will significantly improve the quality of biogas. The application of biogas either as cooking fuel or engine fuel chooses the type of purification method. In this work biogas enrichment using coconut shell derived granular activated carbon as CO2 adsorbent by pressure swing adsorption (PSA) technique was investigated. The adsorption of CO2 by the adsorbent with varying pressure from 1 to 10 bar were experimentally examined. The results indicated that with increase in pressure adsorption also increases. Activated carbon (AC) showed adsorption affinity towards both CO2 and CH4 at lower pressure. As the pressure increases the material showed little higher affinity towards CO2 than CH4. The maximum methane content obtained after adsorption and CO2 reduction percent found to be 73.9 % and 44.7 % at 8 bar pressure respectively. The material showed lower biogas separation ability in terms of lower CH4 enrichment and lower CO2 reduction. So the selected AC cannot be used for biogas enrichment but it can be used for single gas adsorption.


Keywords: Biogas purification, Activated carbon, Pressure swing adsorption, Carbon dioxide, Methane.
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How to cite this article:

Akila, E., S. Pugalendhi and Boopathi, G. 2017. Biogas Purification using Coconut Shell Based Granular Activated Carbon by Pressure Swing AdsorptionInt.J.Curr.Microbiol.App.Sci. 6(4): 1178-1183. doi: https://doi.org/10.20546/ijcmas.2017.604.144