Modelling of CO₂ Loading in DEA by Using Peak Ratio of Raman Spectroscopy

Abstract:

Carbon dioxide (CO₂) capturing has been an important issue for decades. Alkanoamines, such as diethanolamine (DEA) have been widely used for CO₂ separation by absorption process. During this process, CO₂ loading measurement is an imperative action for a proper process control. Currently used methods are titration based which requires a long processing time. In this work Raman spectroscopy is used to model and predict the CO₂ loading in wide range (0-0.97 CO₂ mole/amine mole). The models are developed by using Raman peak ratios to minimize the error due to peaks fluctuations. The Raman peak ratio of 1022 cm^-1/1461cm^-1 has been found as a good fit with the coefficient of determination (R²) of 0.92 and mean squared error (MSE) of 0.00656 CO₂ mole²/ amine mole² in prediction of CO₂ loading.

• Periodical: Applied Mechanics and Materials (Volume 625)
• Pages: 188-191
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.625.188
• Online since: September 2014
• Authors: Muhammad Zubair Shahid, Abdulhalim Shah Maulud*, Mohammad Azmi Bustam
• Keywords: CO₂ Absorption in Alkanolamine, CO₂ Loading Measurement, Raman Spectroscopy

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