A review of chemical absorption of carbon dioxide for biogas upgrading

Abdeen, Fouad R. H.; Mel, Maizirwan; Jami, Mohammed Saedi; Ihsan, Sany Izan; Ismail, Ahmad Faris

doi:10.1016/j.cjche.2016.05.006

Cited by 174 publications

(90 citation statements)

References 106 publications

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“…In the case of the tertiary amine MDEA, the CO 2 charge in the amine stream exiting the absorber tower was very low due to its even lower reaction kinetics [25], and the fact that it requires a greater amount of water for its activation (Table 5). These results agree with those presented in [23,34]. Taking into account the high percentage of CH 4 obtained with the amine MEA, the CO 2 loads in the rich and lean amine streams, and the lower presence of H 2 O in the sweet gas obtained, we decided to dehydrate the obtained gas with TEG.…”

Section: Resultssupporting

confidence: 76%

Simulation of a biogas cleaning process using different amines

Sepúlveda¹,

Jaimes²,

Pacheco³

et al. 2018

Rev. Fac. Ing.

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The use of biogas generated in landfills has gained importance in developing countries like Colombia. Taking into account that this biogas presents poor combustion properties that make interchangeability with other combustible gases difficult, the elimination of gases and vapors, such as CO2 and H2O, through a cleaning process, in which the biogas is converted to biomethane, improves the biogas properties as a fuel gas for general use. In this work, we simulated the generation of biogas at El Carrasco sanitary landfill in Bucaramanga, using the US EPA (United States Environmental Protection Agency) landfill gas emissions model. Additionally, we simulated the biogas cleaning process to extract the remaining moisture using the ProMax software; for this, we used three different amines (MDEA, MEA, and DEA), followed by a glycol dehydration process. The results showed that the amine MEA produced the largest increase in the concentration of CH4 (90.37 %) for the biogas generated in the landfill. Furthermore, dehydration with glycol was an efficient process to obtain a gas with a high percentage of methane (91.47 %) and low water presence (1.27 %); this would allow the use of biomethane in conventional industrial combustion processes and power generation.

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Section: Resultssupporting

confidence: 76%

Simulation of a biogas cleaning process using different amines

Sepúlveda¹,

Jaimes²,

Pacheco³

et al. 2018

Rev. Fac. Ing.

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show abstract

“…In general, gas solubility depends on the physical and chemical properties of the solvent. Physical absorption occurs when the gaseous molecules are attached to liquid molecules with weak intermolecular forces . In the case of CO 2 , physical absorption process is usually operated at high pressure and low temperature to increase its solubility in the absorbing liquid.…”

Section: Physico‐chemical Methods For Biogas Purificationmentioning

confidence: 99%

“…In addition, the solvent has to comply with other requirements such as being available, cheap, environmental friendly, having a high CO 2 load, easy to regenerate, and having low viscosity. The most common solvents used in chemical absorption processes for upgrading biogas are amines, caustic/alkali solutions, and amino acid salts . Table summarizes some important experimental results when using chemical absorption purification.…”

Section: Physico‐chemical Methods For Biogas Purificationmentioning

confidence: 99%

“…Amino acids are an alternative to the use of amines (MEA and DEA) for biogas purification due to the existence of identical amino functional groups in their molecules. Amino acids are used in the form of amino acid salt through the following reaction: amino acids react with alkaline salts such as sodium or potassium hydroxide, the carboxylate group of the amino acid is neutralized forming amino acid salt . Although amino acid salts are considered expensive compared to other CO 2 absorbent, they present similar or even better characteristics when absorbing CO 2 than amines …”

Section: Physico‐chemical Methods For Biogas Purificationmentioning

confidence: 99%

“…Due to their ionic nature, amino acid salts have a similar CO 2 absorption to amines, but with a lower volatility. A lower volatility of the absorbent reduces the expected loss during the regeneration process …”

Section: Physico‐chemical Methods For Biogas Purificationmentioning

confidence: 99%

See 2 more Smart Citations

Biogas purification via optimal microalgae growth: A literature review

Cea-Barcia

López‐Caamal

Zúñiga

et al. 2018

Biotechnology Progress

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In this review, we compare works from the current decade that address the CO2‐removal from biogas by means of microalgae. The microalgae culture process acts as a biochemical absorption process; it is potentially competitive with respect to classical and commercial absorption methods due to its additional benefits such as availing CO2 for the production of valuable microalgae biomass and being an environmentally friendly technique. Nevertheless, the low yield of biogas purification translates into the need to use optimal operation strategies that render the whole biogas production process economically feasible. A class of these strategies requires models capable of reproducing key traits of the dynamical behavior of microalgae growth. Thus, without overlooking the classical physico‐chemical methods for biogas purification, our literature review addresses: (i) biogas purification via microalgae and different microalgae growth conditions, (ii) approaches that maximize microalgae growth, in order to increase CO2‐consumption, and (iii) different models that describe the representative characteristics of microalgae growth. This investigation traces a pathway to future considerations on optimal biogas purification alternatives by microalgae culture processes. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:1513–1532, 2018

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Wenning,

Paustenbach

2024

Human and Ecological Risk Assessment

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A review of chemical absorption of carbon dioxide for biogas upgrading

Cited by 174 publications

References 106 publications

Simulation of a biogas cleaning process using different amines

Simulation of a biogas cleaning process using different amines

Biogas purification via optimal microalgae growth: A literature review

Hazard Identification (Environmental)

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