Environmental, health and safety assessment of post-combustion CO2 capture processes with phase-change solvents

Shavalieva, Gulnara; Kazepidis, Panagiotis; Παπαδόπουλος, Αθανάσιος Ι.; Seferlis, Panos; Papadokonstantakis, Stavros

doi:10.1016/j.spc.2020.07.015

Cited by 21 publications

(4 citation statements)

References 49 publications

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“…Moreover, the RM must be applied to prevent any kind of risk, both in standard operational conditions and in extraordinary and emergency situations. In fact, potential causes of accidents can derive by planned processes but also by infrequent or unplanned events [ 123 , 124 ].…”

Section: Methodsmentioning

confidence: 99%

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Environmental and safety risk assessment for sustainable circular production: Case study in plastic processing for fashion products

Mazzi

2023

Heliyon

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Section: Methodsmentioning

confidence: 99%

“… (1) References for criteria: [ 79 , 85 , 88 , 117 , [122] , [123] , [124] , 126 , 130 , 135 ]. (2) References for valuable alternatives: [ 79 , 80 , 85 , 119 , 121 , [128] , [129] , [130] , [131] ].…”

Section: Methodsmentioning

confidence: 99%

Environmental and safety risk assessment for sustainable circular production: Case study in plastic processing for fashion products

Mazzi

2023

Heliyon

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“…As such, CO 2 , water and MAPA remain in the organic, CO 2 -rich phase, while DEEA is mostly found in the aqueous phase [77]. Shavalieva et al [78] studied a novel mixture of S1N (cyclohexylpropane-1,3-diamine) and DMCA (dimethylcyclohexylamine) as well the known phase change solvent MCA (methylcyclohexylamine). Both S1N-DMCA and MCA solvents showed significantly reduced thermal requirements compared to the base case CO 2 absorption with MEA.…”

Section: Phase Change Solventsmentioning

confidence: 99%

Solvents for Membrane-Based Post-Combustion CO2 Capture for Potential Application in the Marine Environment

et al. 2022

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Carbon capture on-board ships represents a powerful technological measure in order for the shipping industry to meet the very stringent GHG emission reduction requirements. Operation within the ship environment introduces a number of constraints associated mainly with space, energy supply, and safety which have to be addressed using compact yet efficient solutions. To this end, solvent-based membrane CO2 capture offers several advantages and has the necessary technological maturity for on-board installation. Solvent choice remains a critical issue both for reasons associated with process efficiency as well as on-board safety. In this paper, we present an up-to-date comprehensive review of the different solvents that can be used for post-combustion CO2 capture. Furthermore, we investigated the solvents’ performance as determined by their inherent characteristics, properties, and behavior for a range of operating conditions against the strict shipping requirements. A preliminary qualitative comparative assessment was carried out based on appropriately selected key performance indicators (KPIs) pertinent to the requirements of the shipping industry. The identified solvent classes were compared using the most critical KPIs for system integration with the ship. It was concluded that at present, no solvent category can efficiently address all the requirements of the ship. However, widely used solvents such as secondary amines showed relatively good compatibility with the majority of the introduced KPIs. On the other hand, more recently developed molecules, such as phase change solvents and ionic liquids, can easily prevail over the vast majority of the identified solvents as long as they are brought to the same level of technological maturity with benchmark solvents. Such a conclusion points toward the need for accelerating research on more tailor-made and performance-targeted solvents.

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“…DMCA, (Papadopoulos et al 2020b). The phase split solvent is proved to be advisable from economic (Zarogiannis et al 2020a), environmental (Shavalieva et al 2021) and operational (resilient to disturbances) (Zarogiannis et al 2020b) points of view. This study proposes a fast method that, based solely on experimental data of vapour-liquid equilibrium of CO 2 gas, compares alternatives with MEA in terms of required flowrate and energy consumption.…”

Section: Alternative Aqueous Alkanolamines To Meamentioning

confidence: 99%

Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss

Popescu

González

Llorens

et al. 2021

Clean Techn Environ Policy

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The carbon dioxide concentration in the atmosphere has reached extremely high levels, generating environmental concerns. Unfortunately, despite the climate change, CO2 is not included nowadays as a key environmental issue in Best Available Technique (BAT) reference documents (BREF). Industrially, the widespread industrial technology to capture CO2 is the chemical absorption using aqueous monoethanolamine (MEA) at 30%wt, which is the basis of comparison for novel alternative techniques in the literature and seems a suitable candidate to be proposed as Best Available Technique. Nevertheless, there is an intense research to find alternative solvents that decrease the energy consumption for carbon capture and many solvents are claimed in the literature to outperform MEA. A novel empirical surrogate model and exergy balances are used to confirm that MEA is still the best candidate to be proposed as Best Available Technique. The surrogate model proposed in this study properly regresses the CO2 gas liquid equilibrium data. The regressed parameters of the model are tabulated in this study for many aqueous alkanolamines and their mixtures, being the basis for computationally inexpensive chemical absorption column design. The surrogate model parameter considering the temperature is related with the chemical absorption energy and the consumed energy for solvent recovery. The obtained results show that none of the considered alkanolamine outperforms MEA in all the considered aspects, i.e. energy and solvent flowrate. MEA minimum flowrate is 15.62 mol solvent/mol gas and its heat of absorption regression parameter is − 27,745 J/mol. The proposed mathematical method is useful as a fast assessment for other novel alternatives that will be proposed in the future, providing energetically more efficient and cleaner technologies for CO2 capture. Graphic abstract

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Environmental, health and safety assessment of post-combustion CO2 capture processes with phase-change solvents

Cited by 21 publications

References 49 publications

Environmental and safety risk assessment for sustainable circular production: Case study in plastic processing for fashion products

Environmental and safety risk assessment for sustainable circular production: Case study in plastic processing for fashion products

Solvents for Membrane-Based Post-Combustion CO2 Capture for Potential Application in the Marine Environment

Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss

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