Big Data Analysis and Technical Review of Regeneration for Carbon Capture Processes

Abstract

Carbon capture remains an integral technology to mitigate pollution from one of the most prevalent greenhouse gases. CO 2 desorption/absorbent regeneration for both solid-and liquidbased systems is widely recognized as an energy-intensive and costly process operation. Consequently, tremendous work was devoted toward developing new absorbents and regeneration processes to promote their economic feasibility for extensive implementation. In this review, we broadly and deeply review more than 10,000 papers and extract the hidden trends of carbon capture and absorbent regeneration in the past few decades, using a novel data-mining analysis technique. We comprehensively analyzed an array of recent absorbent regeneration methods utilized in postcombustion, precombustion, carbon capture from industrial point sources, and direct air carbon capture, with an emphasis on sorbent and solvent-based techniques. Advanced regeneration methods using these techniques were illustrated and discussed, followed by recommendations for further research efforts.

Weakly Adsorbed CO2 and H2O Species on Monoethanolamine Films in a Room-Temperature CO2 and Direct Air Capture Cycle: An In Situ Infrared Study

“…IR spectra allowed the observation of the evolution of adsorbed CO 2 which began at the gas–amine interface and further diffused into the bulk of amine liquid film . A typical pure CO 2 capture cycle on a liquid amine film include the following: (i) removing preabsorbed water and CO 2 under argon flow at a rate of 8 cm 3 /min for 5 min at 25 °C, (ii) switching from argon to a CO 2 -containing stream at a rate of 110 cm 3 /min for 20 min for adsorption of CO 2 on the amine film at 25 °C, and (iii) removing gas-phase and adsorbed CO 2 (i.e., desorption of adsorbed CO 2 on the amine film) by switching back to argon at the flow rate of 8 cm 3 /min for 10 min at 25 °C.…”

“…One promising approach which has been extensively studied is the amine-based thermal swing adsorption (TSA) CO 2 capture process . Developing a cost-effective and high-performance amine-based CO 2 capture process requires a comprehensive understanding of the mechanism of the CO 2 -amine reaction .…”

Robust {Pb10}-Cluster-Based Metal–Organic Framework for Capturing and Converting CO2 into Cyclic Carbonates under Mild Conditions

“…However, the recycling and regeneration process of the alkaline solution requires a large amount of heat to release the already absorbed CO 2 molecules and achieve regeneration of the absorbent. This process will consume an additional 10–30% of the power plant’s output electricity . Therefore, scientists have begun to develop CO 2 capture and conversion (CCC) technology, which can immediately convert captured CO 2 into socially valuable chemicals and energy through chemical reactions, achieving the goal of killing two birds with one stone. , Although CO 2 is not active enough, the discovery of some efficient catalytic systems has led to industrial applications of some reactions, based on which a number of chemical raw materials are mass-produced, for instance, methanol, salicylic acid, formic acid, and cyclic carbonate. − Among the numerous reactions involved in the conversion of CO 2 , the synthesis of cyclic carbonates using CO 2 as the C1 source is one of the important pathways for the resource utilization of CO 2 .…”

Recent Progress on CO2 Capture Based on Sterically Hindered Amines: A Review

“…The emission of an inordinate quantity of greenhouse gases into the atmosphere has been recognized as a significant instigator of worldwide climate alteration. − Carbon dioxide (CO 2 ) is one of the most prominent greenhouse gases. − The emission of CO 2 into the atmosphere is a major environmental concern as it has a direct impact on the rising temperatures of the planet. − As per the statistics published by the International Energy Agency, the worldwide CO 2 emissions stemming from energy utilization surged to an all-time high of 36.3 billion tons in 2021, which marks a 6% rise in contrast to the figures for 2020 . Fossil fuel combustion is responsible for more than two-thirds of the world’s net CO 2 emissions for electricity and heat production. − The implementation of carbon capture, utilization, and storage (CCUS) is widely regarded as a pivotal technology in mitigating CO 2 emissions by the year 2050. − As shown in Figure , CCUS involves the capture of CO 2 from sources like power plants and industrial processes, followed by the storage of CO 2 in underground geological formations or the utilization of it for other purposes such as enhanced oil recovery. − According to the location of CO 2 capture, there are precombustion capture, oxygen-rich combustion, and postcombustion capture. − Precombustion capture technology has high equipment investment costs and complex systems; oxygen-enriched combustion technology has high energy consumption in the oxygen production process.…”