Biogas upgrading technologies: Energetic analysis and environmental impact assessment

Yajing Xu; Ying Huang; Bin Wu; Xiangping Zhang; Suojiang Zhang

doi:10.1016/j.cjche.2014.09.048

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Biogas upgrading technologies: Energetic analysis and environmental impact assessment

能源、资源与环境技术 | Updated：2026-01-06

- Biogas upgrading technologies: Energetic analysis and environmental impact assessment
- Chinese Journal of Chemical Engineering Vol. 23, Issue 1, Pages: 247-254(2015)
- Affiliations：
  
  2 School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences,Beijing,China,100049
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2014.09.048
  CLC：
- Published：2015
- Accepted：
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Yajing Xu, Ying Huang, Bin Wu, Xiangping Zhang, Suojiang Zhang. Biogas upgrading technologies: Energetic analysis and environmental impact assessment[J]. Chin.J.Chem.Eng., 2015, 23(1): 247-254.
DOI：

Yajing Xu, Ying Huang, Bin Wu, Xiangping Zhang, Suojiang Zhang. Biogas upgrading technologies: Energetic analysis and environmental impact assessment[J]. Chin.J.Chem.Eng., 2015, 23(1): 247-254. DOI： 10.1016/j.cjche.2014.09.048.

摘要

Abstract

Biogas upgrading for removing CO

and other trace components from raw biogas is a necessary step before the biogas to be used as a vehicle fuel or supplied to the natural gas grid. In this work

three technologies for biogas upgrading

i.e.

pressuredwater scrubbing (PWS)

monoethanolamine aqueous scrubbing (MAS) and ionic liquid scrubbing (ILS)

are studied and assessed in terms of their energy consumption and environmental impactswith the process simulation and green degree method. A non-random-two-liquid and Henry's law property method for a CO

separation system with ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim

]

[Tf

]

) is established and verified with experimental data. The assessment results indicate that the specific energy consumption of ILS and PWS is almost the same and much less than that of MAS. High purity CO

product can be obtained by MAS and ILS methods

whereas no pure CO

is recovered with the PWS. For the environmental aspect

ILS has the highest green degree production value

while MAS and PWS produce serious environmental impacts.

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