Abstract
Biogas has a significant potential for commercial growth in the energy sector. However, CO2 and other impurities should be removed to produce a higher content of CH4 called biomethane. This process is known as biogas upgrading and the technology adopted is called CO2 Capture. This study focuses on the chemical absorption-desorption process using Mono-ethanolamine (MEA). One of the main disadvantages of this process is the high energy requirement for solvent regeneration. Therefore, new additives which may enhance the performance of the technology while reducing the energy requirement, are being ventured into. To calculate the performance of CO2 capture by the aqueous mixture of MEA and the energy reducing additives, simulators need to use accurate thermodynamic models, capable of calculating phase equilibria and thermal properties of the system. This work shows a brief validation of the existing model parameters in the extended UNIQUAC relevant to the complex mixtures of the species involved.
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