Characterization of Alkanolamine Blends for Carbon Dioxide Absorption. Corrosion and Regeneration Studies

Sánchez-Bautista, Alfredo; Palmero, Ester M.; Moya, Alberto J.; Gómez‐Díaz, Diego; Rubia, M. Dolores La

doi:10.3390/su13074011

Cited by 6 publications

(5 citation statements)

References 39 publications

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“…An amount of 5 wt.% DEA and AMP showed a moderate value in which the absorbent degraded by 77.48% and 64.02%. Although Equations 1 and 2 show that MEA, DEA, and AMP can produce carbamate and bicarbonate ions, the rates of CO2 absorption capacity are different [32,33]. It is contrary to TEA, which barely degraded (43%) because of its symmetric structure [33].…”

Section: Degradation Of Alkanolamine Absorbentsmentioning

confidence: 99%

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Effects of Alkanolamine Absorbents in Integrated Absorption–Mineralization

Thamsiriprideeporn

Suekane

2022

Minerals

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Integrated absorption–mineralization (IAM) involves the transformation of CO2 in a chemical-based solution with brine used as the absorbent to form insoluble carbonates and is promising for carbon capture, utilization, and storage. Various types of absorbents such as monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA), and aminomethyl propanol (AMP) were examined in multicycle integrated absorption–mineralization (multicycle IAM) involving absorption, precipitation, and regeneration steps between 20 °C and 25 °C at atmospheric pressure in order to reveal their performance in terms of CO2 absorption and conversion and absorbent degradation. We found that 5 wt.% AMP offered 89.5% CO2 absorption capacity per unit of absorbent converted into the amount of solid carbonate within 4 cycles. In addition, it was moderately degraded by 64.02% during the first cycle and then reduced from 30% to 10% in the next cycle (>2 cycles). In comparison with MEA, which was used as the initial absorbent, AMP provided a fivefold increase in the speed of multicycle IAM.

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Section: Degradation Of Alkanolamine Absorbentsmentioning

confidence: 99%

“…The primary (RNH 2 ), secondary (RNH), and steric hindrance (RNH 2 ) amines are able to form both carbamate and bicarbonate ions. Those amines directly react with CO 2 gases in the zwitterion mechanism (RNHCOO − ), generating bicarbonate ions (HCO 3 − ) and protonated amine (RNH 3 + ), as shown in Equations ( 1) and (2) [32,33].…”

Section: Introductionmentioning

confidence: 99%

Effects of Alkanolamine Absorbents in Integrated Absorption–Mineralization

Thamsiriprideeporn

Suekane

2022

Minerals

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“…7 The corrosive activity of organic amine absorbents varies with amine type, amine concentration, acidic gas load and concentration, chemical properties of impurities (typically heat stable salts), and temperature. 5,[8][9][10][11][12][13][14] Xiang et al evaluated the electrochemical behavior of carbon steel in monoethanolamine (MEA) solutions loaded with CO 2 , and studied the influence of factors such as oxygen, thermal stable salts, flow rate, and temperature. The results showed that under MEA/CO 2 conditions, the corrosion rate of carbon steel decreased over time and stabilized at a very low value.…”

Section: Introductionmentioning

confidence: 99%

“…The corrosive activity of organic amine absorbents varies with amine type, amine concentration, acidic gas load and concentration, chemical properties of impurities (typically heat stable salts), and temperature 5,8–14 . Xiang et al.…”

Section: Introductionmentioning

confidence: 99%

Corrosion performance of carbon/stainless steel in amine‐based solvents under different conditions for CO₂ chemical absorption process

Wang,

Fang,

Wang

et al. 2023

Greenhouse Gases

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The overall corrosion behavior of S304 stainless steel and A3 carbon steel in 30 wt.% MEA (monoethanolamine) and AMP/MEA (2‐amino‐2‐methyl‐1‐propanol / monoethanolamine) blended amine solutions at 40–100°C was investigated. The characterization analysis of the corroded material surfaces was performed, and the changes in the properties of both solvents after long‐term immersion corrosion were measured, including the accumulation of heat stable salts (HSS) and viscosity changes. The results of the long‐term immersion corrosion experiments showed that the corrosion rate of S304 stainless steel was significantly lower than that of A3 carbon steel in both amine solutions. However, the corrosion rate of both materials exhibited a similar trend, initially decreasing and then stabilizing over time. Due to the higher concentration of carbonate ions in the AMP/MEA system, it exhibited better overall corrosion resistance and degradation resistance compared to the MEA system. The main component of the corrosion product on carbon steel was identified as Fe2(OH)2CO3. The electrochemical test results showed that the corrosion current of S304 stainless steel was much smaller than that of A3 carbon steel, and its charge transfer resistance was much higher, indicating that it was less prone to electron loss in the organic amine solutions. Additionally, the AMP/MEA system exhibited superior corrosion resistance. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…Even though many different CCS technologies have been proposed to date, only a few have reached commercial status, highlighting CO 2 chemical absorption [5]. Currently, solvents such as ammonia, piperazine and amines have been proposed for their absorption of industrial CO 2 emissions, with commercial focus on the latter group [6,7]. Monoethanolamine (MEA) is one example of a commercial amine with a high capture capacity [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

In-Line Monitoring of Carbon Dioxide Capture with Sodium Hydroxide in a Customized 3D-Printed Reactor without Forced Mixing

et al. 2022

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Many industrial processes make use of sodium because sodium is the fifth most abundant metal and the seventh most abundant element on Earth. Consequently, there are many sodium-containing industrial wastes that could potentially be used for carbon capture, paving the way towards a circular and biobased economy. For example, a common industrial chemical is NaOH, which is found in black liquor, a by-product of the paper and pulp industry. Nonetheless, the literature available on CO2 absorption capacity of aqueous NaOH is scarce for making a fair comparison with sodium-containing waste. Therefore, to fill this gap and set the foundation for future research on carbon capture, the CO2 absorption capacity of NaOH solutions in a concentration range of 1–8 w/w% was evaluated, a wider range compared with currently available data. The data set presented here enables evaluating the performance of sodium-based wastes, which are complex mixtures and might contain other compounds that enhance or worsen their carbon capture capacity. We designed a customized reactor using a 3D-printer to facilitate in-line measurements and proper mixing between phases without the energy of stirring. The mixing performance was confirmed by computational fluid dynamics simulations. The CO2 absorption capacity was measured via weight analysis and the progress of carbonation using a pH meter and an FTIR probe in-line. At 5 w/w% NaOH and higher, the reaction resulted in precipitation. The solids were analyzed with X-ray diffraction and scanning electron microscope, and nahcolite and natrite were identified. With our setup, we achieved absorption capacities in the range of 9.5 to 78.9 g CO2/L for 1 w/w% and 8 w/w% of NaOH, respectively. The results are in fair agreement with previously reported literature, suggesting that non-forced mixing reactors function for carbon capture without the need of stirring equipment and a possible lower energy consumption.

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Characterization of Alkanolamine Blends for Carbon Dioxide Absorption. Corrosion and Regeneration Studies

Cited by 6 publications

References 39 publications

Effects of Alkanolamine Absorbents in Integrated Absorption–Mineralization

Effects of Alkanolamine Absorbents in Integrated Absorption–Mineralization

Corrosion performance of carbon/stainless steel in amine‐based solvents under different conditions for CO₂ chemical absorption process

In-Line Monitoring of Carbon Dioxide Capture with Sodium Hydroxide in a Customized 3D-Printed Reactor without Forced Mixing

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Characterization of Alkanolamine Blends for Carbon Dioxide Absorption. Corrosion and Regeneration Studies

Cited by 6 publications

References 39 publications

Effects of Alkanolamine Absorbents in Integrated Absorption–Mineralization

Effects of Alkanolamine Absorbents in Integrated Absorption–Mineralization

Corrosion performance of carbon/stainless steel in amine‐based solvents under different conditions for CO2 chemical absorption process

In-Line Monitoring of Carbon Dioxide Capture with Sodium Hydroxide in a Customized 3D-Printed Reactor without Forced Mixing

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Product

Resources

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Corrosion performance of carbon/stainless steel in amine‐based solvents under different conditions for CO₂ chemical absorption process