Efficacies of Carbon-Based Adsorbents for Carbon Dioxide Capture (original) (raw)
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Advancements in adsorption based carbon dioxide capture technologies- A comprehensive review
Heliyon, 2023
The significant increase in energy consumption has facilitated a rapid increase in offensive greenhouse gas (GHG) and CO2 emissions. The consequences of such emissions are one of the most pivotal concerns of environmental scientists. To protect the environment, they are conducting the necessary research to protect the environment from the greenhouse effect. Among the different sources of CO2 emission, power plants contribute the largest amount of CO2 and as the number of power plants around the world is rising gradually due to increasing energy demand, the amount of CO2 emission is also rising subsequently. Researchers have developed different potential technologies to capture post-combustion CO2 capture from powerplants among which membrane-based, cryogenic, absorption and adsorption-based CO2 processes have gained much attention due to their applicability at the industrial level. In this work, adsorption-based CO2 technologies are comprehensively reviewed and discussed to understand the recent advancements in different adsorption technologies and several adsorbent materials. Researchers and scientists have developed and advanced different adsorption technologies including vacuum swing adsorption, temperature swing adsorption, pressure swing adsorption, and electric swing adsorption, etc. To further improve the CO2 adsorption capacity with a compact CO2 adsorption unit, researchers have integrated different adsorption technologies to investigate their performance, such as temperature vacuum swing adsorption, pressure vacuum swing adsorption, electric temperature pressure swing adsorption, etc. Different adsorbent materials have been tested to evaluate their applicability for CO2 adsorption and among these adsorbents, advanced carbonaceous, non—carbonaceous, polymeric, and nanomaterials have achieved much attention due to their suitable characteristics that are required for adsorbing CO2. Researchers have reported that higher CO2 adsorption capacity can be achieved by integrating different adsorption technologies and employing suitable adsorbent material for that system. This comprehensive review also provides future directions that may assist researchers in developing novel adsorbent materials and gaining a proper understanding of the selection criteria for effective CO2 adsorption processes with suitable adsorbents.
Carbon Dioxide Capture by Adsorption ( Review )
2016
The present paper reviews the different types of adsorbents that could be used for CO2 capture from flue gases. They include carbon-based adsorbents, zeolites, molecular sieves, metal-organic frameworks, hydrotalcite-like compounds and advanced adsorbents. Their possibilities are described and confronted. In particular, it has been demonstrated that classical adsorbent materials need further functionalization or impregnation with different nitrogen-containing species in order to become suitable for CO2 capture. The different methods for CO2 capture by adsorption cyclic processes such as Pressure Swing Adsorption (PSA), Vacuum Swing Adsorption (PSA), Thermal Swing Adsorption (TSA), Electric Swing Adsorption (ESA) as well as the combination of TSA and chemical reaction, known as Thermal Swing Sorption-Enhanced Reaction (TSSER), are also mentioned in the cited literature.
Large-scale applications and challenges of adsorption-based carbon capture technologies
Chinese Science Bulletin
Significant progress has been made in direct air capture (DAC) in recent years. Evidence suggests that the large-scale deployment of DAC by adsorption would be technically feasible for gigatons of CO 2 capture annually. However, great efforts in adsorption-based DAC technologies are still required. This review provides an exhaustive description of materials development, adsorbent shaping, in situ characterization, adsorption mechanism simulation, process design, system integration, and technoeconomic analysis of adsorption-based DAC over the past five years; and in terms of adsorbent development, affordable DAC adsorbents such as amine-containing porous materials with large CO 2 adsorption capacities, fast kinetics, high selectivity, and long-term stability under ultra-low CO 2 concentration and humid conditions. It is also critically important to develop efficient DAC adsorptive processes. Research and development in structured adsorbents that operate at low-temperature with excellent CO 2 adsorption capacities and kinetics, novel gas-solid contactors with low heat and mass transfer resistances, and energy-efficient regeneration methods using heat, vacuum, and steam purge is needed to commercialize adsorption-based DAC. The synergy between DAC and carbon capture technologies for point sources can help in mitigating climate change effects in the long-term. Further investigations into DAC applications in the aviation, agriculture, energy, and chemical industries are required as well. This work benefits researchers concerned about global energy and environmental issues, and delivers perspective views for further deployment of negative-emission technologies.
Progress in adsorption capacity of nanomaterials for carbon dioxide capture: A comparative study
Journal of Cleaner Production, 2021
With the gradual rise in atmospheric carbon dioxide brought about by human activities and industry effluents, research has now been geared toward carbon capture and storage. To achieve high carbon dioxide adsorption capacity, development of nanomaterials with optimized properties has been attracting growing interest for more than ten years already. Such multiparameter investigations require a complex and rigorous analysis in order to compare the different developed adsorbents and improve their performances. In this review, we propose a state-of-the-art approach related to the four most studied nanostructured adsorbents for carbon dioxide capture: graphene, carbon nanotubes, zeolite, and metal organic frameworks. The capture processes and the nanomaterials of interest were described as well as the modifications applied to improve the efficiency of carbon dioxide capture. The present unprecedented analysis allows to correlate the nanomaterial properties, especially surface area and pore volume, to the CO2 adsorption capacity. The results reveal that contrary the popular belief, the CO2 capture improvement is not solely liable on the high surface area and the high pore volume 2 of the nanosorbents. This outcome may be useful in the course of improvement of nanostructured materials for CO2 capture for future technologies. Keywords CO2 capture; adsorption; graphene; carbon nanotubes; MOF; zeolite accounting for nearly three-quarters of pollutions. The concentration of CO2 in the atmosphere has been observed to keep on rising significantly as a result of high combustion of organic burning materials and fossil fuels, particularly coal, to meet the rising global demand for energy. According to the Carbon Dioxide Information Analysis Center, global emissions rose from 2 billion tons of CO2 in 1900 to over 35 billion tons in 2015, while the data from Global Carbon Project showed an additional annual increase of 2.7% and 0.6%, respectively, in 2018 and 2019 (Le Quéré et al., 2015). In fact, increasing emission of CO2 and other greenhouse gases has led to an increase in the average global temperature. Independent analyses by NASA and National Oceanic and Atmospheric Administration reported that the average global surface temperature of the earth has risen more than 2°C since 1880, and they believe emissions in this century will also further contribute to climate change in the short and long term (Smith et al., 2008). Additionally, according to NASA's Goddard Institute for Space Studies (GISS), rising atmospheric and ocean temperatures are driving to ongoing mass loss from Greenland and Antarctica, and also a spike in climate extremes such as heat waves, wildfires, and strong precipitation (GISTEMP Team, 2021; Lenssen et al., 2019). In order to combat global warming, Kyoto Protocol encourages 37 developed nations and the European Union to reduce their greenhouse gas emissions by an average of 5.2% below those of 1990 between 2008 and 2012 (Lau et al., 2009). Besides, the Paris Climate Agreement also intends to lessen the increasing rate of global temperature to 1.5°C or 2°C above pre-industrial level by 2100. Concerns over the rapid increase of CO2 levels in the atmosphere, as well as how it exacerbates climate change, have prompted a major research effort to capture and store CO2 gas from point source pollution. In fact, it was reported that, improving carbon capture and storage (CCS) will minimize current CO2 emissions from point sources by more than 50% at sustainable costs (Hasan et al., 2015). To design efficient strategies for CCS, it is necessary to understand each
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During the last half-century, the CO2 concentration in the world’s atmosphere has increased from 310 p.p.m. to over 380 p.p.m. This is due to the widespread usage of fossil fuels as a main source of energy. Modeling forecasts have shown that this trend will continue to rise and reducing CO2 emissions is a challenging task for multi-stakeholders, including research institutions. The UN Climate Change Conference in Glasgow (COP26) has stressed that stakeholders need to work together to achieve a NetZero target. Technologies involving absorbents for the capture of CO2 from a gas mixture are energy-intensive. Carbon adsorption and conversion (CAC) approaches have been gaining attention recently since these technologies can mitigate CO2 emissions. In this review, materials ranging from advanced carbon-based materials to natural resources-based materials will be reviewed. Adsorption and conversion capacities as well as the scalability possibility of these technologies for solving the CO2 ...
Atmosphere, 2022
Due to rapid industrialization and urban development across the globe, the emission of carbon dioxide (CO2) has been significantly increased, resulting in adverse effects on the climate and ecosystems. In this regard, carbon capture and storage (CCS) is considered to be a promising technology in reducing atmospheric CO2 concentration. Among the CO2 capture technologies, adsorption has grabbed significant attention owing to its advantageous characteristics discovered in recent years. Porous carbon-based materials have emerged as one of the most versatile CO2 adsorbents. Numerous research activities have been conducted by synthesizing carbon-based adsorbents using different precursors to investigate their performances towards CCS. Additionally, amine-functionalized carbon-based adsorbents have exhibited remarkable potential for selective capturing of CO2 in the presence of other gases and humidity conditions. The present review describes the CO2 emission sources, health, and environme...
High temperature materials for CO2 capture
Greenhouse Gas Control Technologies 9, 2009
The potential benefits of precombustion carbon dioxide capture are well documented, and adsorption remains a promising separation process in this area. This paper details work to identify and assess the potential of high temperature adsorbents suitable for precombustion capture. The aim of this paper is to schematically identify adsorbents that are suitable for carbon capture in different temperature ranges. A critical aspect of this work is to assess the materials not only in terms of carbon dioxide isotherms and absolute loading, but to consider the wide range of other properties that are required to achieve an industrially feasible adsorbent-selectivity, cycling capacity, stability, kinetics, high pressure loading, fate of other components (including water, H 2 S, NH 3 , CO and N 2). It is only when all these requirements are sufficiently met, that an adsorbent can be consider worthy of industrial consideration. A range of analytic screening tests are described to enable a full characterisation of the merit of a specific adsorbent.
State-of-the-art review on capture of CO2 using adsorbents prepared from waste materials
Chemical Engineering Research & Design, 2020
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