Upgrading biogas by membrane contactor separation
Biogas consists of mixture of gases, among which methane and carbon dioxide are major composition. The upgrading biogas involves the process of separation methane from other mixture of gases in raw biogas especially carbon dioxide to get high yield of biomethane. The present of other mixture of g...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Akademia Baru
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/71224/ http://irep.iium.edu.my/71224/ http://irep.iium.edu.my/71224/1/71224_Upgrading%20Biogas%20By%20Membrane%20Contactor%20Separation.pdf |
| Summary: | Biogas consists of mixture of gases, among which methane and carbon dioxide are
major composition. The upgrading biogas involves the process of separation methane
from other mixture of gases in raw biogas especially carbon dioxide to get high yield of
biomethane. The present of other mixture of gases drops the calorific value of biogas
and it reduces the quality of biogas. In this research, the membrane contactor
separation was used to upgrade the biogas concentration. The main purpose of the
research is to maximize the composition of methane in biomethane produced after
separation process conducted by determining the condition or parameter during
separation process. The parameter involved was inlet pressure which pressure above
2.5 bar had promising the higher biomethane composition obtained, as the inlet
pressure increases, the composition of biomethane obtained increases. At inlet
pressure 2.5 bar, the composition of methane can achieve 71.2% with 21.1% of carbon
dioxide composition at permeate stream. Besides, the type of adsorbents used affect
the efficiency of membrane contactor. The adsorbents used for this experiment were
molecular sieve 13X and granular activated carbon which 2.5 bars inlet pressure was
applied. The molecular sieve had better performance in the separation of methane and
carbon dioxide with 64.7% of methane composition at peak compared to the granular
activated carbon with 60.0% of methane composition at peak. The operating
parameter and type of adsorbents used influenced the performance of membrane as
well as the quality of biomethane produced during separation process. As conclusion,
process parameter and adsorbents type are crucial components in membrane
contactor separation process to upgrade biogas. |
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