Solvent selection for CO2 capture from gases with high carbon dioxide concentration

Wilk, Andrzej; Więcław‐Solny, L.; Tatarczuk, A.; Krótki, A.; Spietz, Tomasz; Chwoła, Tadeusz

doi:10.1007/s11814-017-0118-x

Cited by 41 publications

(16 citation statements)

References 23 publications

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“…"Perfect" absorbent should be characterized by non-toxic character, high absorption capacity, high-boiling point, low vapor pressure, high diffusion coefficient, low prices, and safety [22]. Several solvents that may be useful for the removal of impurities include water, mineral oils, alcohols, ketones, and amines [23][24][25]. However, in accordance with the trends of "green chemistry", conventional solvents should be replaced by new generation absorbents.…”

Section: Vscsmentioning

confidence: 99%

Absorptive Desulfurization of Model Biogas Stream Using Choline Chloride-Based Deep Eutectic Solvents

Słupek

Makoś

2020

Sustainability

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The paper presents a synthesis of deep eutectic solvents (DESs) based on choline chloride (ChCl) as hydrogen bond acceptor and phenol (Ph), glycol ethylene (EG), and levulinic acid (Lev) as hydrogen bond donors in 1:2 molar ratio. DESs were successfully used as absorption solvents for removal of dimethyl disulfide (DMDS) from model biogas steam. Several parameters affecting the absorption capacity and absorption rate have been optimized including kinds of DES, temperature, the volume of absorbent, model biogas flow rate, and initial concentration of DMDS. Furthermore, reusability and regeneration of DESs by means of adsorption and nitrogen barbotage followed by the mechanism of absorptive desulfurization by means of density functional theory (DFT) as well as FT-IR analysis were investigated. Experimental results indicate that the most promising DES for biogas purification is ChCl:Ph, due to high absorption capacity, relatively long absorption rate, and easy regeneration. The research on the absorption mechanism revealed that van der Waal interaction is the main driving force for DMDS removal from model biogas.

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Section: Vscsmentioning

confidence: 99%

Absorptive Desulfurization of Model Biogas Stream Using Choline Chloride-Based Deep Eutectic Solvents

Słupek

Makoś

2020

Sustainability

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“…Piperazine (1,4-diazacyclohexane, PZ) is among the amines considered for use in large-scale Carbon Capture (CC) to reduce CO 2 emissions from industrial point sources. 1 A 40 wt % amine solution with PZ and 2-amino-2-methyl-1-propanol in a 1:2 M ratio was recently suggested as the new benchmark solvent for CO 2 capture technology. 2…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Study of the OH-Initiated Degradation of Piperazine under Simulated Atmospheric Conditions

et al. 2020

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The OH-initiated photo-oxidation of piperazine and 1-nitropiperazine as well as the photolysis of 1-nitrosopiperazine were investigated in a large atmospheric simulation chamber. The rate coefficient for the reaction of piperazine with OH radicals was determined by the relative rate method to be k OH-piperazine = (2.8 ± 0.6) × 10 –10 cm 3 molecule –1 s –1 at 307 ± 2 K and 1014 ± 2 hPa. Product studies showed the piperazine + OH reaction to proceed both via C–H and N–H abstraction, resulting in the formation of 1,2,3,6-tetrahydropyrazine as the major product and in 1-nitropiperazine and 1-nitrosopiperazine as minor products. The branching in the piperazinyl radical reactions with NO, NO 2 , and O 2 was obtained from 1-nitrosopiperazine photolysis experiments and employed analyses of the 1-nitropiperazine and 1-nitrosopiperazine temporal profiles observed during piperazine photo-oxidation. The derived initial branching between N–H and C–H abstraction by OH radicals, k N–H /( k N–H + k C–H ), was 0.18 ± 0.04. All experiments were accompanied by substantial aerosol formation that was initiated by the reaction of piperazine with nitric acid. Both primary and secondary photo-oxidation products including 1-nitropiperazine and 1,4-dinitropiperazine were detected in the aerosol particles formed. Corroborating atmospheric photo-oxidation schemes for piperazine and 1-nitropiperazine were derived from M06-2X/aug-cc-pVTZ quantum chemistry calculations and master equation modeling of the pivotal reaction steps. The atmospheric chemistry of piperazine is evaluated, and a validated chemical mechanism for implementation in dispersion models is presented.

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“…Additionally, to estimate an accuracy of the sodium carbonate method, the CO 2 content of a standard sample (i.e., containing a known quantity of CO 2 ) was determined. The standard solution was prepared by saturation ammonia liquor (of known NH 3 concentration) with pure CO 2 in a special glass reactor used to study the absorption capacity of amine solvents [8,33]. The results are summarized in Table 1.…”

Section: Chemical Analysismentioning

confidence: 99%

“…Amines have numerous advantage, such as high reaction rates with CO 2 , satisfactory absorption capacity and a reasonable price [7,8]. Nonetheless, the high regeneration energy, corrosiveness and degradation resulting in the loss of amine and potential to form harmful chemicals are major drawbacks of amine solvents [3,6,9,10].…”

mentioning

confidence: 99%

Laboratory Studies of Ammonia Emissions from the CO2 Capture Process Using Aqueous Ammonia from the Solvay Process

Spietz

Chwoła

Jastrząb

et al. 2019

Pol. J. Environ. Stud.

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Amine solutions are used to remove CO 2 in various areas ranging from natural gas production to the food and beverage industry [1]. Monoethanolamine (MEA), diethanolamine (DEA), and N-methyldietahnolamine (MDEA) are well-known chemical solvents used for removing sour gases from process gas streams [2,3]. As the reduction of greenhouse gases gains importance, the use of amines and alternative solvents for CO 2 post combustion carbon capture (PCCC) is a significant area of research and development. Among the various approaches to separate CO 2 from flue gas, the absorptionbased CO 2 capture technology is known to be the most practical method due to its technical maturity and large capacity for treating large gas volumes [4][5][6]. The ability to retrofit to existing power plants is also a strength of liquid absorbent-based PCC technologies.

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Solvent selection for CO2 capture from gases with high carbon dioxide concentration

Cited by 41 publications

References 23 publications

Absorptive Desulfurization of Model Biogas Stream Using Choline Chloride-Based Deep Eutectic Solvents

Absorptive Desulfurization of Model Biogas Stream Using Choline Chloride-Based Deep Eutectic Solvents

Experimental and Theoretical Study of the OH-Initiated Degradation of Piperazine under Simulated Atmospheric Conditions

Laboratory Studies of Ammonia Emissions from the CO2 Capture Process Using Aqueous Ammonia from the Solvay Process

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