Study on low pressure adsorption of biomethane from biogas by coal activated carbon

© School of Engineering, Taylor’s University. A study on low pressure adsorption of biomethane purified from biogas by a commercial coal activated carbon (AC) was carried out. The adsorption mechanisms of biomethane at 80 and 90% CH4concentration were considered by Langmuir model and Dubinin-Astakho...

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Main Authors: Wassana Kamopas, Attakorn Asanakham, Tanongkiat Kiatsiriroat
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/58681
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-586812018-09-05T04:28:30Z Study on low pressure adsorption of biomethane from biogas by coal activated carbon Wassana Kamopas Attakorn Asanakham Tanongkiat Kiatsiriroat Engineering © School of Engineering, Taylor’s University. A study on low pressure adsorption of biomethane purified from biogas by a commercial coal activated carbon (AC) was carried out. The adsorption mechanisms of biomethane at 80 and 90% CH4concentration were considered by Langmuir model and Dubinin-Astakhov model. The lower biomethane concentration was better adsorbed since the activated carbon gave higher affinity for CO2than that for CH4. By Langmuir model, the limiting uptake of biomethane on the activated carbon (qmax) and the Langmuir’s constant (KL) increased with the decrease of the AC temperature. The value of qmaxfor 80% biomethane adsorption was in a range of 4.80-5.06 mmol/g(AC)compared with a range of 2.98-3.23 mmol/g(AC)for 90% biomethane adsorption. The value of KLwas in a range of 0.37-0.43 MPa-1. For Dubinin-Astakhov equation, the structural heterogeneity parameter (n) for the coal ACs was investigated and found to be 1.48. The isosteric heat of adsorption for 80 and 90% biomethane were in a range of 5.56-9.76 kJ/mol. 2018-09-05T04:28:30Z 2018-09-05T04:28:30Z 2018-03-01 Journal 18234690 2-s2.0-85043979784 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85043979784&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/58681
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Engineering
spellingShingle Engineering
Wassana Kamopas
Attakorn Asanakham
Tanongkiat Kiatsiriroat
Study on low pressure adsorption of biomethane from biogas by coal activated carbon
description © School of Engineering, Taylor’s University. A study on low pressure adsorption of biomethane purified from biogas by a commercial coal activated carbon (AC) was carried out. The adsorption mechanisms of biomethane at 80 and 90% CH4concentration were considered by Langmuir model and Dubinin-Astakhov model. The lower biomethane concentration was better adsorbed since the activated carbon gave higher affinity for CO2than that for CH4. By Langmuir model, the limiting uptake of biomethane on the activated carbon (qmax) and the Langmuir’s constant (KL) increased with the decrease of the AC temperature. The value of qmaxfor 80% biomethane adsorption was in a range of 4.80-5.06 mmol/g(AC)compared with a range of 2.98-3.23 mmol/g(AC)for 90% biomethane adsorption. The value of KLwas in a range of 0.37-0.43 MPa-1. For Dubinin-Astakhov equation, the structural heterogeneity parameter (n) for the coal ACs was investigated and found to be 1.48. The isosteric heat of adsorption for 80 and 90% biomethane were in a range of 5.56-9.76 kJ/mol.
format Journal
author Wassana Kamopas
Attakorn Asanakham
Tanongkiat Kiatsiriroat
author_facet Wassana Kamopas
Attakorn Asanakham
Tanongkiat Kiatsiriroat
author_sort Wassana Kamopas
title Study on low pressure adsorption of biomethane from biogas by coal activated carbon
title_short Study on low pressure adsorption of biomethane from biogas by coal activated carbon
title_full Study on low pressure adsorption of biomethane from biogas by coal activated carbon
title_fullStr Study on low pressure adsorption of biomethane from biogas by coal activated carbon
title_full_unstemmed Study on low pressure adsorption of biomethane from biogas by coal activated carbon
title_sort study on low pressure adsorption of biomethane from biogas by coal activated carbon
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85043979784&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/58681
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