Current status and future scenarios of carbon capture from power plants emission: a review

Alalaiwat, Dalal; Khan, Ezzat

doi:10.1007/s11157-023-09663-2

Cited by 15 publications

(5 citation statements)

References 146 publications

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“…The majority of these separations are carried out using cryogenic methods, which demand a substantial energy input. Furthermore, the production of highly pure oxygen may lead to corrosion problems [66,67]. It is noteworthy that the highest recorded gross generation efficiency in oxy-combustion is 47.98% [68].…”

Section: Co 2 Capturing Mechanisms For Air Ocean and Alternative Sourcesmentioning

confidence: 99%

Turning CO₂ into sustainable graphene: a comprehensive review of recent synthesis techniques and developments

Sorayani Bafqi,

Aliyeva,

Baskan-Bayrak

et al. 2024

Nano Futures

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The synthesis of graphene through environmentally friendly and efficient methods has posed a persistent challenge, prompting extensive research in recent years to access sustainable source and attain high quality graphene competing with the one obtained from graphite ores. Addressing this challenge becomes even more intricate when aiming to convert captured CO2 into graphene structures, encountering hurdles stemming from the inherent stability of the CO2 molecule and its steadfast transformation. Together with CO2, there is a great potential to create carbon source by using natural biomass, cellulosic plant sources and industrial wastes. This comprehensive review delves into the recent synthesis techniques and developments, exploring both direct and indirect pathways for the integration of CO2 that strive to overcome the complexities associated with transforming CO2 into graphene. The review critically analyzes CO2 capturing mechanisms designed for air, ocean, and alternative sources, outlining the progress made in harnessing captured CO2 as a feedstock for graphene production by evaluating captured CO2 values. This review consolidates the recent advancements by providing a roadmap for future research directions in the sustainable synthesis of graphene from captured CO2 in the pursuit of a greener, circular economy.

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Section: Co 2 Capturing Mechanisms For Air Ocean and Alternative Sourcesmentioning

confidence: 99%

Turning CO₂ into sustainable graphene: a comprehensive review of recent synthesis techniques and developments

Sorayani Bafqi,

Aliyeva,

Baskan-Bayrak

et al. 2024

Nano Futures

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“…Coal will produce a lot of harmful substances in the combustion process; so far, more than 80 trace elements have been found from coal, of which 22 are harmful or potentially harmful elements . A considerable number of harmful elements will not only cause serious damage to the ecological environment but also seriously threaten human life and health . They are released into the atmosphere through different routes and cause serious pollution to air, water, and soil .…”

Section: Introductionmentioning

confidence: 99%

“…1 A considerable number of harmful elements will not only cause serious damage to the ecological environment but also seriously threaten human life and health. 2 They are released into the atmosphere through different routes and cause serious pollution to air, water, and soil. 3 Compared with other heavy metal elements (e.g., Pb, Cd, Cr, etc.…”

Section: Introductionmentioning

confidence: 99%

Mercury Removal from Coal-Fired Flue Gas on Sulfur-Modified Petroleum Coke: Experiment and Simulation

An,

Le,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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High-sulfur petroleum coke is a common industrial byproduct generated during the petroleum refining process. This study aimed to investigate the influence of various factors, such as the alkali−coke ratio, activation temperature, and activation time, on the mercury removal performance of KOH-activated high-sulfur petroleum coke adsorbent. The optimal activation method was determined using KOH as the activator and elemental sulfur as the modifier. Subsequently, the effects of carbon-to-sulfur ratio, modification temperature, and modification time on the mercury removal performance were examined, leading to the development of a comprehensive preparation method for KOH-activated and sulfur-loaded modified high-sulfur petroleum coke mercury removal adsorbent. The experimental process involved the characterization of the adsorbent using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The results revealed that KOH significantly enhanced the pore structure, while the sulfur-carrying modification introduced a substantial number of oxygen-and sulfur-containing functional groups. The XPS results suggest that S 0 /thiophene, S 2− / sulfide, sulfoxide, and SO 4 2− may all be involved in the mercury removal process. Elemental sulfur has a strong affinity for Hg 0 and can directly react with Hg 0 to form HgS. Related sulfur-containing compounds are transformed into sulfonates/sulfates, while Hg 0 reacts to form HgS and HgSO 4 . In addition, density functional theory (DFT) simulations were conducted to investigate the adsorption process of mercury. It was observed that with the increase of the number of S atoms, the potential of Hg atoms in the adsorbed configuration gradually increased, and the reaction between adsorption and S atoms was enhanced, indicating that the adsorption energy of Hg atoms in the straight-chain carbon sulfide was greater with the increase of the number of S atoms. Moreover, the terminal S atom demonstrated a stronger adsorption effect on Hg compared with the nonterminal S atom when the S atom count is 2 or 3. This study provided valuable insights for the reuse of industrial byproducts and the development of efficient and cost-effective mercury removal adsorbents.

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“…3,4 Among these technologies, oxyfuel combustion is recognized as a significant option for clean coal strategies due to its ability to effectively reduce CO 2 emissions. 5,6 However, oxyfuel combustion results in substantial concentrations of mercury in the flue gas. 7,8 The formal entry into the force of Minamata Convention on Mercury signifies that mercury pollution has become a significant global environmental issue.…”

Section: Introductionmentioning

confidence: 99%

“…The emissions of CO 2 contribute to global warming, , emphasizing the need to develop efficient and environmentally friendly coal-utilization technologies. , Among these technologies, oxyfuel combustion is recognized as a significant option for clean coal strategies due to its ability to effectively reduce CO 2 emissions. , However, oxyfuel combustion results in substantial concentrations of mercury in the flue gas. , The formal entry into the force of Minamata Convention on Mercury signifies that mercury pollution has become a significant global environmental issue . Currently, several countries have established relevant regulations regarding atmospheric mercury emissions from coal-fired power plants.…”

Section: Introductionmentioning

confidence: 99%

Multiscale Understanding of the Mechanism of Mercury Removal by Acid–Chlorine-Modified Biomass Coke: Experiments and Simulations

Le,

Wang,

Zeng

et al. 2023

Energy Fuels

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Coal-fired power plants are a significant source of mercury pollution, necessitating the development of inexpensive and efficient adsorbents for mercury removal. This work proposes the preparation of an adsorbent using acid-chlorine-modified rice straw coke for this purpose. The characterization of the adsorbent shows that the modification increases the surface pore structure and makes the surface carry abundant oxygen-containing functional groups, which is conducive to improving the mercury removal capacity of the adsorbent. This work studies the effects of the acid–chlorine ratio, mass ratio, inlet mercury concentration, and reaction temperature on the desorption performance of modified rice straw coke and investigates the mechanism of mercury removal by combining the kinetic model and density functional theory. The results demonstrate that the optimal effect of the combined acid–chlorine modification is achieved at an acid–chlorine ratio and mass ratio of 1:2. The reaction temperature has a significant effect on the efficiency of mercury removal, and the increase of the inlet mercury concentration can promote mercury removal. The mercury adsorption process is primarily controlled by surface mass transfer and chemisorption, with chemisorption being the critical control step. The introduction of Cl and O atoms through modification creates doped structures that are highly conducive to mercury adsorption. The Cl atom exhibits greater reactivity toward the Hg atom, facilitating the removal of mercury. The presence of O atoms not only increases the abundance of oxygen-containing functional groups on the surface, but also enhances the activity of the Cl atoms. These findings provide valuable theoretical support for the application of biomass coke in the field of mercury removal, addressing mercury pollution associated with coal-fired power plants.

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Current status and future scenarios of carbon capture from power plants emission: a review

Cited by 15 publications

References 146 publications

Turning CO₂ into sustainable graphene: a comprehensive review of recent synthesis techniques and developments

Turning CO₂ into sustainable graphene: a comprehensive review of recent synthesis techniques and developments

Mercury Removal from Coal-Fired Flue Gas on Sulfur-Modified Petroleum Coke: Experiment and Simulation

Multiscale Understanding of the Mechanism of Mercury Removal by Acid–Chlorine-Modified Biomass Coke: Experiments and Simulations

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Current status and future scenarios of carbon capture from power plants emission: a review

Cited by 15 publications

References 146 publications

Turning CO2 into sustainable graphene: a comprehensive review of recent synthesis techniques and developments

Turning CO2 into sustainable graphene: a comprehensive review of recent synthesis techniques and developments

Mercury Removal from Coal-Fired Flue Gas on Sulfur-Modified Petroleum Coke: Experiment and Simulation

Multiscale Understanding of the Mechanism of Mercury Removal by Acid–Chlorine-Modified Biomass Coke: Experiments and Simulations

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Product

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Turning CO₂ into sustainable graphene: a comprehensive review of recent synthesis techniques and developments

Turning CO₂ into sustainable graphene: a comprehensive review of recent synthesis techniques and developments