Emerging Solvent Regeneration Technologies for CO2 Capture through Offshore Natural Gas Purification Processes

Pauzi, Mohd Mu’Izzuddin Mohd; Azmi, Nurulhuda; Lau, Kok Keong

doi:10.3390/su14074350

Cited by 9 publications

(6 citation statements)

References 109 publications

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“…Additionally, the high regeneration temperature requirement (e.g., 900 • C for hydroxide-based solvents) (Keith et al, 2018; National Academies of Sciences, 2019) poses a challenge in terms of thermal energy and heating rate efficacy; necessitating the need for alternative energy sources and the targeted delivery of energy (i.e., overcome reliance on bulk convective heating). In this context, electrical energy can be utilized to regenerate sorbents through techniques such as microwave (MW) and induction-based heating, which offer rapid dielectric heating rates compared to conventional thermal heating (Wilcox, 2020;Mohd Pauzi et al, 2022). Ozkan et al (2022) demonstrated that the use of electricity for both liquid and solid sorbent regeneration yields a lower thermal energy equivalent for DAC.…”

Section: Regeneration Energymentioning

confidence: 99%

Direct air capture of CO2: from insights into the current and emerging approaches to future opportunities

et al. 2023

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The rapid development of direct air capture (DAC) technologies has become critical in order to remove CO2 from the atmosphere and limit global warming to a maximum of 1.5°C. In this perspective, we provide a mini review of the current research on the emerging liquid- and solid-based sorbent materials to capture CO2, summarize the existing challenges of DAC technologies, and suggest future research directions to accelerate the development of DAC systems. In particular, the desired properties for a breakthrough sorbent that efficiently captures CO2 from the air and releases it for sequestration are described.

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Section: Regeneration Energymentioning

confidence: 99%

Direct air capture of CO2: from insights into the current and emerging approaches to future opportunities

et al. 2023

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“…CO 2 Absorption is a solvent-based method where CO 2 is captured using aqueous solutions, such as monoethanolamine (MEA), diamines and tertiary amines, aqueous ammonia, amino acid salts, ionic liquids, and deep eutectic solvents [42,43] CO 2 is captured when the gas stream containing the CO 2 is brought into contact with these solvents [44]. Some of these solvents absorb the CO 2 chemically, while others do it physically [45].…”

Section: Absorptionmentioning

confidence: 99%

“…However, these solvents have some drawbacks, such as high corrosion rates, high energy consumption, amine degradation, and a large footprint. To overcome these problems, the use of ionic liquids as solvents has been lately gaining attention due to inherent structure tunability, good affinity to CO 2 , and low volatility [44]. For CO 2 capture, the most mature and close to large-scale applications are absorption processes [43].…”

Section: Absorptionmentioning

confidence: 99%

A Review of the Recent Advancement of Bioconversion of Carbon Dioxide to Added Value Products: A State of the Art

2023

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Excessive dependence on fossil fuels increases GHG emissions and carbon levels in the atmosphere, leading to climatic changes. This phenomenon can be reversed by capturing the carbon via “carbon capture and storage” (CCS) or “carbon capture and utilize” (CCU) technologies. In CCS methods, the captured carbon is stored in natural sinks (e.g., oceans), whereas, in CCU methods, the carbon is converted into useful products. Among CCU methods, the biological conversion of CO2 (BioConCO2) into value-added chemicals has gained great attention. This review focuses on providing an overview of the recent advances in CO2 utilization technology with a focus on the BioConCO2. The theoretical background and technical drivers, challenges, and setbacks of upscaling and commercialization of BioConCO2 are critically discussed with implications for future improvements. The BioConCO2 is increasingly attracting the attention of researchers and industrialists for its capacity to operate under low CO2 concentrations and in the presence of impurities (common conditions in industrial flue gases)—among other numerous advantages. While upscaling algae-based BioConCO2 has operational and financial challenges, bioconversion via bacteria and genetically engineered cyanobacterial seems promising due to their efficiency and flexibility.

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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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Emerging Solvent Regeneration Technologies for CO2 Capture through Offshore Natural Gas Purification Processes

Cited by 9 publications

References 109 publications

Direct air capture of CO2: from insights into the current and emerging approaches to future opportunities

Direct air capture of CO2: from insights into the current and emerging approaches to future opportunities

A Review of the Recent Advancement of Bioconversion of Carbon Dioxide to Added Value Products: A State of the Art

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

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