Thermodynamic and economic evaluation of biomethane and carbon dioxide liquefaction process in a hybridized system of biogas upgrading process and mixed fluid cascade liquefaction cycle

Both governmental and international programs support the promotion of biofuels and aim to increase the limit of renewable energy used in the fuel energy balance. Biogas is produced during the anaerobic methane fermentationprocess and it is known as a significant source of renewable energy, contributing to agriculture and environmental protection. Three types of biogas can be distinguished: biogas from sewage sludge, biogas collected from land`fils, andagricultural biogas. There are several possibilities of using upgraded biogas. Biogas can be used in cogeneration systems to provide heat and electricity, in transportation as a motor fuel and in the production of biohydrogen. Biogas upgrading process leads to a product which is characterized by the same parameters as compressed natural gas. Direct biogas use in the production of hydrogen is possible because of prior purification from traces like hydrogen sulfide, except carbon dioxide, by which the reaction can proceed in the desired manner.

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Extraction and Purification of Renewable Chemicals from Hydrothermal Liquefaction Bio-oil Using Supercritical Carbon Dioxide: A Techno-economic Evaluation

Industrial & Engineering Chemistry Research ◽

10.1021/acs.iecr.8b05366 ◽

2019 ◽

Vol 58 (13) ◽

pp. 5202-5214 ◽

Cited By ~ 5

Author(s):

Wahab Maqbool ◽

Kameron Dunn ◽

William Doherty ◽

Neil McKenzie ◽

Dylan Cronin ◽

...

Keyword(s):

Carbon Dioxide ◽

Economic Evaluation ◽

Supercritical Carbon Dioxide ◽

Hydrothermal Liquefaction ◽

Renewable Chemicals ◽

Extraction And Purification ◽

Bio Oil ◽

Supercritical Carbon

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Selective extraction of polar lipids of mango kernel using Supercritical Carbon dioxide (SC–CO2) extraction: Process optimization of extract yield/phosphorous content and economic evaluation

Chemosphere ◽

10.1016/j.chemosphere.2020.127639 ◽

2020 ◽

Vol 260 ◽

pp. 127639 ◽

Cited By ~ 5

Author(s):

Aparna Kayathi ◽

Prodosh Prasad Chakrabarti ◽

Lucas Bonfim-Rocha ◽

Lucio Cardozo-Filho ◽

Veeriah Jegatheesan

Keyword(s):

Carbon Dioxide ◽

Economic Evaluation ◽

Supercritical Carbon Dioxide ◽

Process Optimization ◽

Selective Extraction ◽

Extraction Process ◽

Polar Lipids ◽

Extract Yield ◽

Mango Kernel ◽

Phosphorous Content

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Theoretical and Economic Evaluation of Low-Cost Deep Eutectic Solvents for Effective Biogas Upgrading to Bio-Methane

Energies ◽

10.3390/en13133379 ◽

2020 ◽

Vol 13 (13) ◽

pp. 3379

Author(s):

Edyta Słupek ◽

Patrycja Makoś ◽

Jacek Gębicki

Keyword(s):

Economic Evaluation ◽

Excess Enthalpy ◽

Low Cost ◽

Choline Chloride ◽

Unit Cost ◽

Deep Eutectic Solvents ◽

Molar Ratio ◽

Biogas Upgrading ◽

Screening Model ◽

Effective Removal

This paper presents the theoretical screening of 23 low-cost deep eutectic solvents (DESs) as absorbents for effective removal of the main impurities from biogas streams using a conductor-like screening model for real solvents (COSMO-RS). Based on thermodynamic parameters, i.e., the activity coefficient, excess enthalpy, and Henry’s constant, two DESs composed of choline chloride: urea in a 1:2 molar ratio (ChCl:U 1:2), and choline chloride: oxalic acid in a 1:2 molar ratio (ChCl:OA 1:2) were selected as the most effective absorbents. The σ-profile and σ-potential were used in order to explain the mechanism of the absorptive removal of CO2, H2S, and siloxanes from a biogas stream. In addition, an economic analysis was prepared to demonstrate the competitiveness of new DESs in the sorbents market. The unit cost of 1 m3 of pure bio-methane was estimated to be in the range of 0.35–0.37 EUR, which is comparable to currently used technologies.

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