Chemical absorption—amine absorption/stripping technology for biogas upgrading

Biogas major components are methane, carbon dioxide and traces of hydrogen sulfide, ammonia and nitrogen. Biogas upgrading process is the process by which carbon dioxide (composing 40 % of the biogas) is removed. In this study chemical absorption process using three different solvents (10 – 30 % monoethanolamine, 4 – 12 % sodium hydroxide and 5 – 15 % aqueous ammonia) was performed to produce methane-enriched biogas. A laboratory-scale packed-column apparatus containing efficient and cheap packing material (plastic bioball) was used to perform the experimental work in this study. Initial absorption runs were performed to select the best solvent type and concentration. Monoethanolamine (MEA) was proven to have the highest ability in producing upgraded biogas using a single absorption column apparatus at ambient conditions. The liquid to gas flow ratio was investigated using 30 % MEA solution. Optimum liquid to gas flow ratio for biogas upgrading process was determined to be about 18 (on mass basis). Biogas with methane content up to 96.1 v/v% was produced with CO2 loading capacity up to 0.24 mole-CO2 per mole-MEA.

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Biogas upgrading by chemical absorption using ammonia rich absorbents derived from wastewater

Water Research ◽

10.1016/j.watres.2014.09.010 ◽

2014 ◽

Vol 67 ◽

pp. 175-186 ◽

Cited By ~ 23

Author(s):

Andrew McLeod ◽

Bruce Jefferson ◽

Ewan J. McAdam

Keyword(s):

Chemical Absorption ◽

Biogas Upgrading

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Methane recovery in a combined amine absorption and gas steam boiler as a self-provided system for biogas upgrading

Energy ◽

10.1016/j.energy.2018.06.004 ◽

2018 ◽

Vol 157 ◽

pp. 744-751 ◽

Cited By ~ 5

Author(s):

Huijuan Gong ◽

Zezhi Chen ◽

Huiqiang Yu ◽

Weili Wu ◽

Weixing Wang ◽

...

Keyword(s):

Steam Boiler ◽

Biogas Upgrading ◽

Methane Recovery ◽

Amine Absorption

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Biogas upgrading through CO2 removal by chemical absorption in an amine organic solution: Physical and technical assessment, simulation and experimental validation

Biomass and Bioenergy ◽

10.1016/j.biombioe.2020.105729 ◽

2020 ◽

Vol 141 ◽

pp. 105729

Author(s):

Rosaria Augelletti ◽

Stefano Galli ◽

Paola Gislon ◽

Maurizio Granati ◽

Giulia Monteleone ◽

...

Keyword(s):

Experimental Validation ◽

Co2 Removal ◽

Organic Solution ◽

Chemical Absorption ◽

Biogas Upgrading ◽

Technical Assessment

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Design and Modelling of Technologies for Upgrading and Direct Methanation of biogas: energy analysis and economic assessment

E3S Web of Conferences ◽

10.1051/e3sconf/202123803002 ◽

2021 ◽

Vol 238 ◽

pp. 03002

Author(s):

Alessandra Perna ◽

Mariagiovanna Minutillo ◽

Alessandro Sorce

Keyword(s):

Lower Energy ◽

Energy Analysis ◽

Economic Assessment ◽

Chemical Absorption ◽

Biogas Upgrading ◽

Economic Issues ◽

Biogas Energy ◽

Biomethane Production ◽

Renewable Hydrogen ◽

Economic Studies

The exploitation of the biomethane as transport fuel is receiving increasing attention in many European countries. Technologies and processes for improving the Biogas-to-biomethane production with a lower energy consumption and lower costs are objective of several techno-economic studies. In this paper two promising concepts for the biogas conversion are proposed and analyzed considering both technical and economic issues. The analysis regards the biogas upgrading by means of the chemical absorption with Hot Potassium Carbonate and the direct methanation of biogas by adding renewable hydrogen. In order to assess the feasibility of these technologies the numerical modelling has been applied for the plants designing. The energy results have then been used to assess the expected biomethane production price and a sensitivity analysis on the main parameters has been performed. Finally, economic performance of the options proposed will be evaluated under different market conditions.

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Research Trends of Carbon Dioxide Capture using Ionic Liquids and Aqueous Amine-Ionic Liquids Mixtures

Scientific Research Journal ◽

10.24191/srj.v13i1.9382 ◽

2016 ◽

Vol 13 (1) ◽

pp. 53

Author(s):

Siti Nabihah Jamaludin ◽

Ruzitah Mohd Salleh

Keyword(s):

Ionic Liquids ◽

Co2 Capture ◽

Membrane Separation ◽

Carbon Dioxide Capture ◽

Global Climate ◽

Research Trends ◽

Co2 Absorption ◽

Absorption Process ◽

Chemical Absorption ◽

Factors Influencing

Anthropogenic CO2 emissions has led to global climate change and widely contributed to global warming since its concentration has been increasing over time. It has attracted vast attention worldwide. Currently, the different CO2 capture technologies available include absorption, solid adsorption and membrane separation. Chemical absorption technology is regarded as the most mature technology and is commercially used in the industry. However, the key challenge is to find the most efficient solvent in capturing CO2. This paper reviews several types of CO2 capture technologies and the various factors influencing the CO2 absorption process, resulting in the development of a novel solvent for CO2 capture.

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