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A platform for research: civil engineering, architecture and urbanism
The effect of biomass ashes and potassium salts on MEA degradation for BECCS
https://orcid.org/0000-0002-4427-4703
Graphical abstract Display Omitted
Highlights The impact of biomass and coal ashes on the degradation of 30 wt% aqueous monoethanolamine (MEA) has been studied. Thermal and oxidative degradation experiments were carried out and quantified using 1H NMR and GC–MS. N-(2-hydroxyethyl)imidazole-N-oxide (HEINO) which had been previously miss-assigned is a major degradation component. HEINO is likely to act as an oxygen carrier responsible for oxidative degradation under stripper conditions. CCS from white wood biomass combustion may observe less amine degradation than coal or olive biomass plant combustion.
Abstract This study investigates the comparative impact of inherently different biomass and coal ashes on the laboratory and pilot scale degradation of 30 wt% aqueous monoethanolamine (MEA), relevant to post-combustion CO2 capture. Thermal and oxidative degradation experiments were carried out at 135 °C and 40 °C respectively with CO2 loading (0.5 molCO2/molMEA), with and without the presence of ash. Nuclear magnetic resonance (NMR) data is provided for the major MEA degradation compounds such as N-(2-hydroxyethyl)formamide (HEF) and N-(2-hydroxyethyl)imidazole (HEI) along with the characterisation of a new MEA oxidative degradation product, N-(2-hydroxyethyl)imidazole-N-oxide (HEINO) which had been previously misassigned. Degradation products were quantified using 1H NMR and gas chromatography mass spectrometry (GC–MS) to assess the impact of potassium and various ashes from combustion (olive, white wood and two types of coal ash) on the rates of amine degradation. Woody biomass fly ashes were found to reduce the presence of the oxidative degradation products. Both types of coal fly ash and the olive biomass ash were found to enhance the formation the newly identified degradation product, HEINO. Solvent samples taken from a pilot scale facility support these laboratory findings.
The effect of biomass ashes and potassium salts on MEA degradation for BECCS
https://orcid.org/0000-0002-4427-4703
Graphical abstract Display Omitted
Highlights The impact of biomass and coal ashes on the degradation of 30 wt% aqueous monoethanolamine (MEA) has been studied. Thermal and oxidative degradation experiments were carried out and quantified using 1H NMR and GC–MS. N-(2-hydroxyethyl)imidazole-N-oxide (HEINO) which had been previously miss-assigned is a major degradation component. HEINO is likely to act as an oxygen carrier responsible for oxidative degradation under stripper conditions. CCS from white wood biomass combustion may observe less amine degradation than coal or olive biomass plant combustion.
Abstract This study investigates the comparative impact of inherently different biomass and coal ashes on the laboratory and pilot scale degradation of 30 wt% aqueous monoethanolamine (MEA), relevant to post-combustion CO2 capture. Thermal and oxidative degradation experiments were carried out at 135 °C and 40 °C respectively with CO2 loading (0.5 molCO2/molMEA), with and without the presence of ash. Nuclear magnetic resonance (NMR) data is provided for the major MEA degradation compounds such as N-(2-hydroxyethyl)formamide (HEF) and N-(2-hydroxyethyl)imidazole (HEI) along with the characterisation of a new MEA oxidative degradation product, N-(2-hydroxyethyl)imidazole-N-oxide (HEINO) which had been previously misassigned. Degradation products were quantified using 1H NMR and gas chromatography mass spectrometry (GC–MS) to assess the impact of potassium and various ashes from combustion (olive, white wood and two types of coal ash) on the rates of amine degradation. Woody biomass fly ashes were found to reduce the presence of the oxidative degradation products. Both types of coal fly ash and the olive biomass ash were found to enhance the formation the newly identified degradation product, HEINO. Solvent samples taken from a pilot scale facility support these laboratory findings.
The effect of biomass ashes and potassium salts on MEA degradation for BECCS
https://orcid.org/0000-0002-4427-4703
Graphical abstract Display Omitted
Highlights The impact of biomass and coal ashes on the degradation of 30 wt% aqueous monoethanolamine (MEA) has been studied. Thermal and oxidative degradation experiments were carried out and quantified using 1H NMR and GC–MS. N-(2-hydroxyethyl)imidazole-N-oxide (HEINO) which had been previously miss-assigned is a major degradation component. HEINO is likely to act as an oxygen carrier responsible for oxidative degradation under stripper conditions. CCS from white wood biomass combustion may observe less amine degradation than coal or olive biomass plant combustion.
Abstract This study investigates the comparative impact of inherently different biomass and coal ashes on the laboratory and pilot scale degradation of 30 wt% aqueous monoethanolamine (MEA), relevant to post-combustion CO2 capture. Thermal and oxidative degradation experiments were carried out at 135 °C and 40 °C respectively with CO2 loading (0.5 molCO2/molMEA), with and without the presence of ash. Nuclear magnetic resonance (NMR) data is provided for the major MEA degradation compounds such as N-(2-hydroxyethyl)formamide (HEF) and N-(2-hydroxyethyl)imidazole (HEI) along with the characterisation of a new MEA oxidative degradation product, N-(2-hydroxyethyl)imidazole-N-oxide (HEINO) which had been previously misassigned. Degradation products were quantified using 1H NMR and gas chromatography mass spectrometry (GC–MS) to assess the impact of potassium and various ashes from combustion (olive, white wood and two types of coal ash) on the rates of amine degradation. Woody biomass fly ashes were found to reduce the presence of the oxidative degradation products. Both types of coal fly ash and the olive biomass ash were found to enhance the formation the newly identified degradation product, HEINO. Solvent samples taken from a pilot scale facility support these laboratory findings.
The effect of biomass ashes and potassium salts on MEA degradation for BECCS
Clery, Diarmaid S. (author) / Mason, Patrick E. (author) / Barnes, Douglas C. (author) / Szuhánszki, János (author) / Akram, Muhammad (author) / Jones, Jenny M. (author) / Pourkashanian, Mohamed (author) / Rayner, Christopher M. (author)
2021-03-09
Article (Journal)
Electronic Resource
English