Relevant bibliographies by topics / CO2-sorbent / Journal articles

To see the other types of publications on this topic, follow the link: CO2-sorbent.

Journal articles on the topic 'CO2-sorbent'

Author: Grafiati

Published: 7 June 2025

Last updated: 17 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'CO2-sorbent.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

Rodaev, Vyacheslav V., Svetlana S. Razlivalova, Alexander I. Tyurin, and Vladimir M. Vasyukov. "Electrospun Zr-Doped CaO Sorbent for CO2 Capture." Nanomaterials 13, no. 4 (2023): 747. http://dx.doi.org/10.3390/nano13040747.

Full text

Abstract:

A Zr-doped CaO sorbent for high-temperature CO2 capture was fabricated using electrospinning. The nanofiber sorbent with an average filament diameter of about 160 nm is characterized by an initial CO2 uptake capacity of 12.1 mmol/g, a specific surface area of 79 m2/g, an indentation Young’s modulus of 520 MPa, and a hardness of 1.6 MPa. After 50 carbonation/decarbonation cycles, the sorbent has a decent CO2 uptake capacity of 9.7 mmol/g due to the uniform distribution of CaZrO3 in the CaO nanofibers to prevent CaO grain growth caused by CaCO3 sintering. It is revealed that the sorbent CO2 uptake capacity decreases both with an increase in the decarbonation temperature and with an increase in the CO2 concentration in the gas flow upon carbonation, where the sorbent CO2 uptake capacity is more sensitive to the decarbonation temperature than to the CO2 concentration in the gaseous stream during carbonation. It is assumed that the electrospun regenerable Zr-doped CaO sorbent is effective for removing CO2 from flue gases.

APA, Harvard, Vancouver, ISO, and other styles

Ryu, Do-Yeong, Seongbin Jo, Tae-Young Kim, et al. "CO2 Sorption and Regeneration Properties of K2CO3/Al2O3-Based Sorbent at High Pressure and Moderate Temperature." Applied Sciences 12, no. 6 (2022): 2989. http://dx.doi.org/10.3390/app12062989.

Full text

Abstract:

In this study, the CO2 sorption mechanisms and regeneration properties of alumina-based sorbent using K2CO3 loading under high-pressure and moderate temperature conditions were examined. To investigate the mechanism of CO2 sorption, a zirconium-based sorbent was compared with an alumina-based sorbent. The CO2 capture capacities of the PAI10, 20, 30, and 40 were 32.3, 63.0, 95.4, and 124.5 mg CO2/g sorbent, respectively. To investigate the CO2 sorption mechanism of an alumina-based sorbent, we performed XRD, TG/DTG, and FTIR analyses after CO2 sorption in the presence of 10 vol% CO2 and H2O each at 200 °C and 20 atm. For PAI10–40 sorbents, KHCO3 and KAl(CO3)(OH)2 phases were observed by TG/DTG and FTIR analysis. For PAI-x sorbents, it was confirmed that the captured CO2 is desorbed completely at a temperature below 400 °C at 20 atm.

APA, Harvard, Vancouver, ISO, and other styles

Ma, Xiaotong, Yingjie Li, Yi Qian, and Zeyan Wang. "A Carbide Slag-Based, Ca12Al14O33-Stabilized Sorbent Prepared by the Hydrothermal Template Method Enabling Efficient CO2 Capture." Energies 12, no. 13 (2019): 2617. http://dx.doi.org/10.3390/en12132617.

Full text

Abstract:

Calcium looping is a promising technology to capture CO2 from the process of coal-fired power generation and gasification of coal/biomass for hydrogen production. The decay of CO2 capture activities of calcium-based sorbents is one of the main problems holding back the development of the technology. Taking carbide slag as a main raw material and Ca12Al14O33 as a support, highly active CO2 sorbents were prepared using the hydrothermal template method in this work. The effects of support ratio, cycle number, and reaction conditions were evaluated. The results show that Ca12Al14O33 generated effectively improves the cyclic stability of CO2 capture by synthetic sorbents. When the Al2O3 addition is 5%, or the Ca12Al14O33 content is 10%, the synthetic sorbent possesses the highest cyclic CO2 capture performance. Under harsh calcination conditions, the CO2 capture capacity of the synthetic sorbent after 30 cycles is 0.29 g/g, which is 80% higher than that of carbide slag. The superiority of the synthetic sorbent on the CO2 capture kinetics mainly reflects at the diffusion-controlled stage. The cumulative pore volume of the synthetic sorbent within the range of 10–100 nm is 2.4 times as high as that of calcined carbide slag. The structure of the synthetic sorbent reduces the CO2 diffusion resistance, and thus leads to better CO2 capture performance and reaction rate.

APA, Harvard, Vancouver, ISO, and other styles

Yu, Qian, and Wim Brilman. "A Radial Flow Contactor for Ambient Air CO2 Capture." Applied Sciences 10, no. 3 (2020): 1080. http://dx.doi.org/10.3390/app10031080.

Full text

Abstract:

Direct air capture (DAC) of CO2 can address CO2 emissions from distributed sources and produce CO2 from air virtually anywhere that it is needed. In this paper, the performance of a new radial flow reactor (RFR) for CO2 adsorption from ambient air is reported. The reactor uses a supported amine sorbent and is operated in a batch mode of operation or semi-continuously, respectively without or with sorbent circulation. The radial flow reactor, containing 2 kg of the adsorbent, is successfully scaled up from the experimental results obtained with a fixed bed reactor using only 1 g of the adsorbent. In the batch operation mode, the sorbent in the annular space of the RFR is regenerated in situ. With sorbent circulation, the RFR is loaded and unloaded batchwise and only used as an adsorber. A sorbent batch loaded with CO2 is transported to and regenerated in an external (fluid bed) regenerator. The RFR unit is characterized by a low contacting energy (0.7–1.5 GJ/ton-CO2) and a relatively short adsorption time (24–43 min) compared to other DAC processes using the same types of sorbents. The contactor concept is ready for further scale-up and continuous application.

APA, Harvard, Vancouver, ISO, and other styles

Rahma, Fadilla Noor, Cholila Tamzysi, Arif Hidayat, and Muflih Arisa Adnan. "Investigation of Process Parameters Influence on Municipal Solid Waste Gasification with CO2 Capture via Process Simulation Approach." International Journal of Renewable Energy Development 10, no. 1 (2020): 1–10. http://dx.doi.org/10.14710/ijred.2021.31982.

Full text

Abstract:

Integration of gasification with CO2 capture using CaO sorbent is proposed as an alternative treatment to convert municipal solid waste (MSW) into energy. Aspen Plus process simulator was employed to study the process. Two models were built to represent the non-sorbent and the sorbent-enabled MSW gasification. The model validation against available experimental data shows high accuracy of the simulation result. The effect of CO2 capture using CaO sorbent on the syngas composition and lower heating value (LHV) was observed by comparing the two models, and sensitivity analysis was performed on both models. Several process parameters affecting the syngas composition and LHV were investigated, including CaO/MSW ratio, temperature, equivalence ratio, and steam/MSW ratio. The addition of CaO sorbent for CO2 capture was found to successfully reduce the CO2 content in the syngas, increase the H2 composition, and improve the syngas LHV at the temperature below 750 oC. The maximum H2 composition of 56.67% was obtained from the sorbent-enabled gasification. It was found that increasing equivalence ratio leads to a higher H2 concentration and syngas LHV. Raising steam/MSW ratio also increases the H2 production, but also reduces the LHV of the syngas. Observation of the temperature effect found the highest H2 production at 650 oC for both non-sorbent and sorbent-enabled gasification.

APA, Harvard, Vancouver, ISO, and other styles

Sun, Rongyue, Hao Shen, Xun Lv, Yichen Wang, and Tianjiao Hu. "Solution combustion synthesis of MgO-stabilized CaO sorbents using polyethylene glycol as fuel and dispersant." RSC Advances 14, no. 3 (2024): 1741–49. http://dx.doi.org/10.1039/d3ra07513c.

Full text

Abstract:

Using polyethylene glycol as the fuel and dispersant, highly reactive MgO-stabilized CaO sorbent was synthesized by solution combustion, with a CO2 capture capacity of 0.40 g(CO2)/g(sorbent) after 20 cycles.

APA, Harvard, Vancouver, ISO, and other styles

Yu, Ching Tsung, Han Wen Cheng, and Wei Chin Chen. "High Temperature CO₂ Capture by Regenerable Calcium Aluminates Carbonates Sorbents." Advanced Materials Research 779-780 (September 2013): 56–59. http://dx.doi.org/10.4028/www.scientific.net/amr.779-780.56.

Full text

Abstract:

The calcium aluminates carbonates are prepared as mediumhigh temperature CO2 sorbents. The sorbent exhibited excellent performance with 53 wt% capacity and 99% stability in TGA test for 15 h. However, using the sorbent in a fixed-bed reactor, it was found that the stability rapidly decreased to about 35% after 10 cycles. Hence, development of regeneration methods for reusing this spent sorbents is critical to economic consideration toward CO2 capture technology. The calcium aluminates carbonates sorbent makes up layered structure including cations formation (Ca2+, Al3+) and lamella anions (CO32-, OH), which can be re-constructed under aqueous conditions. Aqueous hydrolysis provides an efficient route to reactive sorbent. The results showed that CO2 capacity could be recovered to around 50 wt% with 98% stability in TGA test for 15 h for spent sorbents. The reactive mechanism of sorbent is worthy to further discussing.

APA, Harvard, Vancouver, ISO, and other styles

Mohd Daud, Farah Diana, Srimala Sreekantan, and Abdul Rahman Mohamed. "Carbon Dioxide Capture at Various Temperatures Using Ca(OH)₂ Sorbent Fabricated by Sol-Gel Route in Ethanol Media." Advanced Materials Research 1024 (August 2014): 35–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1024.35.

Full text

Abstract:

Carbon dioxide (CO2) is considered to be the main greenhouse gas contributing to global warming and climate change. Therefore, the present paper investigates the CO2-capture performance of synthesized calcium hydroxides, Ca(OH)2 sorbent at different temperatures which are 350, 450, 550 and 650°C. The CO2 adsorption of the materials synthesized was studied in a thermo-gravimetric analyzer (TGA). The CO2 adsorption temperature strongly influenced the capture performance of the absorbent. The Ca(OH)2 sorbent are prepared by hydrolysis of calcium alkoxides, NaOH as precipitating agent and mixed solvent of ethanol with deionized (DI) water as medium at 35°C. X- ray diffraction (XRD) result showed 40 nm crystallite size of Ca(OH)2 hexagonal crystal structures. The Ca(OH)2 particle size and morphological properties before and after CO2 adsorption are studied by Field Emission Scanning Electron Microscopy (FESEM). The FESEM image indeed showed the rod like shape of Ca(OH)2 structures with rod length increased from 765 to 893 nm while the diameter is between 140 to 160 nm. When Ca(OH)2 sorbent adsorbed CO2, the structures are rigid interconnected each others like a lump shaped. The prepared Ca(OH)2 sorbent possesses a great potential to capture CO2 when increased temperature. Nevertheless, at intermediate temperatures (350-450°C), Ca(OH)2 sorbent still demonstrates a higher CO2 capture capacity than other intermediate temperature adsorbents such as layered double hydroxides (LDHs), lithium zirconates (LiZrO3) and hydrotalcites.

APA, Harvard, Vancouver, ISO, and other styles

Alghazwat, Osamah, Melyse Laud, and Yi Liao. "Thermally Enhanced Acidity for Regeneration of Carbon Dioxide Sorbent." Energies 17, no. 17 (2024): 4279. http://dx.doi.org/10.3390/en17174279.

Full text

Abstract:

The thermal regeneration of CO2 sorbent is the most energy-consuming step in the CO2-capturing process. Although the addition of an acid can induce CO2 release, it does not regenerate the sorbent because the acid forms a salt with the basic sorbent and diminishes its capability for capturing CO2. In this work, a novel approach based on thermally enhanced acidity was studied. This approach utilizes an additive that does not affect the sorbent at room temperature, but its acidity significantly increases at elevated temperatures, which assists the thermal release of CO2. M-cresol was added to an aqueous solution of morpholine. The CO2 capture and release of the mixture were compared to those of a control solution without m-cresol. The amounts of carbamate, bicarbonate, and unreacted morpholine were quantitatively determined using 1H NMR and weight analysis. The results showed that m-cresol did not affect the reactivity of morpholine in the formation of carbamate with CO2 at room temperature. At elevated temperatures, the acidity of m-cresol increased according to Van’t Hoff’s equation, which resulted in a significantly higher rate of CO2 release than that of the control. Given the low cost of m-cresol and its derivatives, this approach could lead to practical technology in the near future.

APA, Harvard, Vancouver, ISO, and other styles

Sjostrom, Sharon, and Constance Senior. "Pilot testing of CO2 capture from a coal-fired power plant—Part 2: Results from 1-MWe pilot tests." Clean Energy 4, no. 1 (2020): 12–25. http://dx.doi.org/10.1093/ce/zkz034.

Full text

Abstract:

Abstract Using a 1-MWe slipstream pilot plant, solid-sorbent-based post-combustion CO2 capture was tested at a coal-fired power plant. Results from pilot testing were used to develop a preliminary full-scale commercial design. The sorbent selected for pilot-scale evaluation during this project consisted of an ion-exchange resin that incorporated amines covalently bonded to the substrate. A unique temperature-swing-absorption (TSA) process was developed that incorporated a three-stage fluidized-bed adsorber integrated with a single-stage fluidized-bed regenerator. Overall, following start-up and commissioning challenges that are often associated with first-of-a-kind pilots, the pilot plant operated as designed and expected, with a few key exceptions. The two primary exceptions were associated with: (i) handling characteristics of the sorbent, which were sufficiently different at operating temperature than at ambient temperature when design specifications were established with lab-scale testing; and (ii) CO2 adsorption in the transport line between the regenerator and adsorber that preloaded the sorbent with CO2 prior to entering the adsorber. Results from the pilot programme demonstrate that solid-sorbent-based post-combustion capture can be utilized to achieve 90% CO2 capture from coal-fired power plants.

APA, Harvard, Vancouver, ISO, and other styles

Rodaev, Vyacheslav V., and Svetlana S. Razlivalova. "Performance and Durability of the Zr-Doped CaO Sorbent under Cyclic Carbonation–Decarbonation at Different Operating Parameters." Energies 14, no. 16 (2021): 4822. http://dx.doi.org/10.3390/en14164822.

Full text

Abstract:

The effect of cyclic carbonation–decarbonation operating parameters on Zr-doped CaO sorbent CO2 uptake capacity evolution is examined. It is revealed that the capacity steady state value increases with the decrease in the carbonation temperature, CO2 concentration in the gas flow upon carbonation and with the increase in the heating rate from the carbonation to the decarbonation stages. The rise in decarbonation temperature leads to a dramatic decrease in the sorbent performance. It is found that if carbonation occurs at 630 °C in the gas flow containing 15 vol.% CO2 and decarbonation is carried out at 742 °C, the sorbent shows the highest values of the initial and steady state CO2 uptake capacity, namely, 10.7 mmol/g and 9.4 mmol/g, respectively.

APA, Harvard, Vancouver, ISO, and other styles

Girimonte, Rossella, Flaviano Testa, Maria Turano, Giuseppe Leone, Marta Gallo, and Giovanni Golemme. "Amine-Functionalized Mesoporous Silica Adsorbent for CO2 Capture in Confined-Fluidized Bed: Study of the Breakthrough Adsorption Curves as a Function of Several Operating Variables." Processes 10, no. 2 (2022): 422. http://dx.doi.org/10.3390/pr10020422.

Full text

Abstract:

Carbon capture, utilization, and storage (CCUS) is one of the key promising technologies that can reduce GHG emissions from those industries that generate CO2 as part of their production processes. Compared to other effective CO2 capture methods, the adsorption technique offers the possibility of reducing the costs of the process by setting solid sorbent with a high capacity of adsorption and easy regeneration and, also, controlling the performance of gas-solid contactor. In this work, an amine-functionalized mesoporous sorbent was used to capture CO2 emissions in a confined-fluidized bed. The adoption of a confined environment allows the establishment of a homogeneous expansion regime for the sorbent and allows to improve the exchange of matter and heat between gas and solid phase. The results illustrate how the different concentration of the solution adopted during the functionalization affects the adsorption capacity. That, measured as mg of CO2 per g of sorbent, was determined by breakthrough curves from continuous adsorption tests using different concentrations of CO2 in air. Mesoporous silica functionalized with a concentration of 20% of APTES proves to be the best viable option in terms of cost and ease of preparation, low temperature of regeneration, and effective use for CO2 capture.

APA, Harvard, Vancouver, ISO, and other styles

Wang, Feng, Lu Yu, Youhua Li, and Dengfa Huang. "CO2 Adsorption Capacity of Organic Alkali Sorbent CPEI from Polyethyleneimine." Adsorption Science & Technology 2021 (January 18, 2021): 1–18. http://dx.doi.org/10.1155/2021/6629365.

Full text

Abstract:

Support-free cross-linked polyethyleneimine sorbent (CPEI) for CO2 capture was evaluated as the regenerable sorbent. The total amines available for the CO2 capture on CPEI were determined by the polyethyleneimine/glutaraldehyde ratio for the synthesis of CPEI. The CO2 capacity of CPEI in the slurry bubble column reactor reached 4.92 mmol/g, which is 1.97 times higher than that obtained under anhydrous conditions. The adsorption kinetics of CPEI in the reactor were investigated in terms of the CPEI amount, the CO2 fraction, the gas flow rate, temperature, and the total amines available. The experimental breakthrough curves for the sorbent were well-fitted with a fractional-order kinetic model. The modeling analysis found the influence of diffusion resistance on the adsorption is more significant than that of the driving force. The CO2 capacity of CPEI remained almost constant during the temperature swing adsorption/desorption cycles.

APA, Harvard, Vancouver, ISO, and other styles

Dashtestani, Forogh, Mohammad Nusheh, Vilailuck Siriwongrungson, et al. "Effect of the Presence of HCl on Simultaneous CO2 Capture and Contaminants Removal from Simulated Biomass Gasification Producer Gas by CaO-Fe2O3 Sorbent in Calcium Looping Cycles." Energies 14, no. 23 (2021): 8167. http://dx.doi.org/10.3390/en14238167.

Full text

Abstract:

This study investigated the effect of HCl in biomass gasification producer gas on the CO2 capture efficiency and contaminants removal efficiency by CaO-Fe2O3 based sorbent material in the calcium looping process. Experiments were conducted in a fixed bed reactor to capture CO2 from the producer gas with the combined contaminants of HCl at 200 ppmv, H2S at 230 ppmv, and NH3 at 2300 ppmv. The results show that with presence of HCl in the feeding gas, sorbent reactivity for CO2 capture and contaminants removal was enhanced. The maximum CO2 capture was achieved at carbonation temperatures of 680 °C, with efficiencies of 93%, 92%, and 87%, respectively, for three carbonation-calcination cycles. At this carbonation temperature, the average contaminant removal efficiencies were 92.7% for HCl, 99% for NH3, and 94.7% for H2S. The outlet contaminant concentrations during the calcination process were also examined which is useful for CO2 reuse. The pore structure change of the used sorbent material suggests that the HCl in the feeding gas contributes to high CO2 capture efficiency and contaminants removal simultaneously.

APA, Harvard, Vancouver, ISO, and other styles

Okumura, Takeshi, Ryohei Numaguchi, Shohei Nishibe, and Norihiko Kumada. "CO2 Capture System Utilizing Solid Sorbent." MEMBRANE 47, no. 6 (2022): 323–28. http://dx.doi.org/10.5360/membrane.47.323.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Diederichsen, Kyle, Yayuan Liu, and T. Alan Hatton. "Flow System with Liquid Active Sorbents for Electrochemically Mediated Carbon Capture." ECS Meeting Abstracts MA2022-01, no. 27 (2022): 2416. http://dx.doi.org/10.1149/ma2022-01272416mtgabs.

Full text

Abstract:

Within the field of carbon capture, electrochemically driven methods have drawn increasing attention due to their ability to operate at ambient temperature, their efficient scaling, and potentially low energetic cost. An important consideration in such systems is the method of gas contacting to enable efficient CO2 separation from the feed gas. Previous flow-based electrochemical processes that enable large-area gas contacting and desorption of concentrated CO2 at a point location all utilize water as the solvent and can require significant water feeds due to high evaporation rates. Here, we demonstrate the use of liquid, redox-active sorbents in a flow system that can decouple the electrode size from gas contacting area. The concept sorbent is a nonvolatile, liquid quinone species that can be reversibly reduced and oxidized to capture and release CO2, respectively. In this initial study, we employ the liquid quinone with sodium salts to achieve sorbent capacities near 2.5M CO2 and couple this sorbent to a ferrocene-derived counter electrolyte in a continuous capture – release process. Through this, we illustrate considerations in the salt choice, counter-electrolyte, and system design to best enable this concept sorbent, and discuss many opportunities for future optimizations.

APA, Harvard, Vancouver, ISO, and other styles

Wu, Dien-Yi, Birgitta Narindri Rara Winayu, and Hsin Chu. "Stability of CO2 Capture by Lithium Orthosilicate Under Various Conditions and the Presence of SO2." Processes 13, no. 1 (2024): 41. https://doi.org/10.3390/pr13010041.

Full text

Abstract:

Investigating effective sorbent materials in the CO2 sorption process is crucial. Lithium-based sorbents combine high carbon capture efficiency with excellent mechanical stability. Lithium orthosilicate (Li4SiO4) was prepared for the CO2 capture test in this study with a variety of variables, including the sorbent calcination temperature, space velocity, operation temperature, and water vapor and SO2 concentrations. Several analyses were used in the characterization of the spent and fresh sorbents. Additionally, the CO2 sorption reaction kinetics were investigated using deactivation models. The sorbent with the best utilization value was obtained via calcining Li4SiO4 at 700 °C for five hours. Li4SiO4 demonstrated exceptional stability in the 600–800 °C temperature and 1200–6000 mL/h/g space velocity ranges. The performance of the sorbent was not significantly affected by the water vapor content up to 10%. Nevertheless, further increasing the water vapor stream drastically declined its performance due to water masking on the sorbent’s surface. Similar sorption trends were demonstrated by Li4SiO4 in all SO2 content setups. The Type I deactivation model was well fitted to the experimental data.

APA, Harvard, Vancouver, ISO, and other styles

Hlaing, Nwe Ni, Srimala Sreekantan, Radzali Othman, et al. "Novel Aragonite CaCO₃Adsorbents: Synthesis, Characterization and CO₂ Adsorption." Advanced Materials Research 911 (March 2014): 415–19. http://dx.doi.org/10.4028/www.scientific.net/amr.911.415.

Full text

Abstract:

In this paper, one dimensional nanorod CaCO3 adsorbents were synthesized via hydrothermal method by varying the amount of polyacrylamide (PAM). The XRD results indicated that all of the characteristic peaks of synthesized adsorbents were matched well with the aragonite CaCO3 phase. FE-SEM analysis showed one dimensional nanorod structures with diameter of 40 - 70 nm and lengths up to micrometer. TG results exhibited CaCO3 adsorbents synthesized with 0.4 and 0.6 g of polyacrylamide possessed high CO2 adsorption capacities for first carbonation/calcination cycle (0.86 and 0.79 g-CO2/g-sorbent) which were higher than the theoretical CO2 adsorption capacity (0.78 g-CO2/g-sorbent) of calcium oxide based adsorbents.

APA, Harvard, Vancouver, ISO, and other styles

Wilk, Andrzej, Lucyna Więcław-Solny, Dariusz Śpiewak, Tomasz Spietz, and Hanna Kierzkowska-Pawlak. "A Selection of Amine Sorbents for CO2 Capture from Flue Gases." Chemical and Process Engineering 36, no. 1 (2015): 49–57. http://dx.doi.org/10.1515/cpe-2015-0004.

Full text

Abstract:

Abstract Amine absorption processes are widely used in the industry to purify refinery gases, process gases or natural gas. Recently, amine absorption has also been considered for CO2 removal from flue gases. It has a number of advantages, but there is one major disadvantage - high energy consumption. This can be reduced by using an appropriate sorbent. From a group of several dozen solutions, three amine sorbents were selected based on primary, tertiary and sterically hindered amines. The solutions were used to test CO2 absorption capacity, absorption kinetics and heat of CO2 absorption. Additional tests were performed on the actual absorber-desorber system to indicate the most appropriate sorbent for capturing CO2 from flue gases.

APA, Harvard, Vancouver, ISO, and other styles

Luisetto, Igor, Maria Rita Mancini, Livia Della Seta, et al. "CaO–CaZrO3 Mixed Oxides Prepared by Auto–Combustion for High Temperature CO2 Capture: The Effect of CaO Content on Cycle Stability." Metals 10, no. 6 (2020): 750. http://dx.doi.org/10.3390/met10060750.

Full text

Abstract:

Cycling high temperature CO2 capture using CaO–based solid sorbents, known as the calcium looping (CaL) process, is gaining considerable scientific and industrial interest due to the high theoretical sorbent capacity (0.78 gCO2/gCaO), the low specific cost, and the negligible environmental impact of the employed materials. In this work, we investigated the self–combustion synthesis of CaO–CaZrO3 sorbents with different CaO contents (40, 60, and 80 wt%) for use in the CaL process. CaZrO3 was used as a spacer to avoid CaO grains sintering at high temperature and to reduce the diffusional resistances of CO2 migrating towards the inner grains of the synthetic sorbent. Samples were characterized by X–ray diffraction (XRD), Brunauer–Emmett–Teller (BET), and scanning electron microscopy (SEM) analyses. The reaction between CO2 and CaO (i.e., carbonation) was carried out in 20 vol% CO2 at 650 °C and calcination (i.e., decomposition of CaCO3 to CaO and CO2) at 900 °C in pure Ar or with 85 vol% CO2 using a thermogravimetric analyzer (thermogravimetric/differential thermal analysis (TG–DTA)). The most stable sorbent was with 40 wt% of CaO showing a CO2 uptake of up to 0.31 g CO2/gsorbent and 0.26 g CO2/gsorbent operating under mild and severe conditions, respectively. The experimental data corroborated the prediction of the shrinking core spherical model in the first phase of the carbonation. A maximum reaction rate of 0.12–0.13 min−1 was evaluated in the first cycle under mild and severe conditions of regeneration.

APA, Harvard, Vancouver, ISO, and other styles

Correia, Patrícia, Carla I. C. Pinheiro, and Paula Teixeira. "Understanding the Role of Mono and Ternary Alkali Metal Salts on CO2 Uptake of MgO Sorbents." Materials 16, no. 24 (2023): 7539. http://dx.doi.org/10.3390/ma16247539.

Full text

Abstract:

CO2 uptake by MgO-based sorbents at intermediate temperatures is attractive for pre- and post-combustion CO2 capture applications. However, besides the high CO2 uptake potential of these materials (1.1 g CO2 g−1 sorbent), in practice, the realistic CO2 capture is far from that of the theorical values. In this work, the sol–gel method was used to synthetize unsupported and supported MgO sorbents (10% Ca− or 10% Ce− support, mol) that were impregnated with different fractions (15, 25, and 35; % mol) of a NaNO3 single salt or a ternary alkali salt (NaNO3, LiNO3 and KNO3 (18/30/52; % mol)). To understand the role of alkali metal salts (AMSs) in the MgO sorbents’ performance, the working and decomposition temperature ranges of AMS under different atmospheres (CO2 and air) were evaluated. The findings show that the CO2 uptake temperature range and maximum uptake (20–500 °C, CO2 atmosphere) of sorbents are correlated. The cyclic CO2 uptake of the most promising sorbents was tested along five carbonation–calcination cycles. For the first and fifth cycles, respectively, the 15 (Na, K, Li)-MgO sorbents showed the highest carrying capacity, i.e., 460–330 mg CO2 g−1 sorbent, while for the 15 (Na, K, Li)-MgO-Ca sorbents, it was 375–275 mg CO2 g−1. However, after the first cycle, the carbonation occurred faster for the 15 (Na, K, Li)-MgO-Ca sorbents, meaning that it can be a path to overpassing carbonation kinetics limitations of the MgO sorbent, making it viable for industrial applications.

APA, Harvard, Vancouver, ISO, and other styles

Rodaev, Vyacheslav V., Svetlana S. Razlivalova, Alexander I. Tyurin, and Vladimir M. Vasyukov. "The Nanofibrous CaO Sorbent for CO2 Capture." Nanomaterials 12, no. 10 (2022): 1677. http://dx.doi.org/10.3390/nano12101677.

Full text

Abstract:

The nanofibrous CaO sorbent for high-temperature CO2 capture was fabricated by the calcination of electrospun composite filaments containing calcium acetylacetonate and polyacrylonitrile as a calcium-oxide precursor and a binder polymer, respectively. The calcination was carried out in air to prevent PAN carbonization and to obtain pure CaO nanofibers. The resulting mats of CaO nanofibers with the average diameter of 130 nm were characterized by a specific surface area of 31 m2/g, a CO2-uptake capacity of 16.4 mmol/g at the carbonation temperature of 618 °C, a hardness of 1.87 MPa, and the indentation Young’s modulus of 786 MPa. The low decarbonation temperature makes the fabricated sorbent promising, for example, for the calcium-looping technology of CO2 removal from the hot exhaust gases of fossil-fueled power plants.

APA, Harvard, Vancouver, ISO, and other styles

Florin, Nicholas, and Paul Fennell. "Synthetic CaO-based sorbent for CO2 capture." Energy Procedia 4 (2011): 830–38. http://dx.doi.org/10.1016/j.egypro.2011.01.126.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Elzinga, G. D., H. T. J. Reijers, P. D. Cobden, W. G. Haije, and R. W. van den Brink. "CaO sorbent stabilisation for CO2 capture applications." Energy Procedia 4 (2011): 844–51. http://dx.doi.org/10.1016/j.egypro.2011.01.128.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Nelson, Thomas O., Luke J. I. Coleman, Atish Kataria, et al. "Advanced Solid Sorbent-Based CO2 Capture Process." Energy Procedia 63 (2014): 2216–29. http://dx.doi.org/10.1016/j.egypro.2014.11.241.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Ammendola, P., F. Raganati, R. Chirone, and F. Miccio. "Preliminary Assessment of Tuff as CO2 Sorbent." Energy Procedia 114 (July 2017): 46–52. http://dx.doi.org/10.1016/j.egypro.2017.03.1145.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Li, Zhan Chao, Hong Tao Fan, and Ting Sun. "Application of Imprinted Functionalized Silica Gel Sorbent for Selective Removal of Cadmium (II) from Industial Wastewaters." Advanced Materials Research 213 (February 2011): 441–44. http://dx.doi.org/10.4028/www.scientific.net/amr.213.441.

Full text

Abstract:

This study investigated the application of an ion imprinted polymer (IIP) with (3-mercaptopropyl) trimethoxysilane (MPS) functionalized the surface of silica gel as a potential sorbent (IIP- MPS/SiO2) for the selective removal and recovery of Cd2+ from industrial wastewaters. IIP- MPS/SiO2 was prepared by a sol–gel method and characterized by IR. Batch studies were performed to evaluate the adsorption process and it was found that the sorbents were found to adsorb selectively Cd2+ in the presence of Co2+, Ni2+, Zn2+ and Cu2+ interferences in the same medium. IIP-MPS/SiO2 sorbent show the selectivity order under competitive conditions: Cd2+ > Co2+ > Ni2+ > Zn2+ > Cu2+. The removal rate of IIP- MPS/SiO2 sorbent for Cd2+ was about 80 % from synthetic wastewater and mine wastewater spiked with 10, 20 and 50 mg•L-1 Cd2+. This work proved that can IIP-MPS/SiO2 sorbent be used as an efficient adsorbent material for selective removal of Cd2+ from wastewaters.

APA, Harvard, Vancouver, ISO, and other styles

Barrulas, Raquel V., Clara López-Iglesias, Marcileia Zanatta, et al. "The AEROPILs Generation: Novel Poly(Ionic Liquid)-Based Aerogels for CO2 Capture." International Journal of Molecular Sciences 23, no. 1 (2021): 200. http://dx.doi.org/10.3390/ijms23010200.

Full text

Abstract:

CO2 levels in the atmosphere are increasing exponentially. The current climate change effects motivate an urgent need for new and sustainable materials to capture CO2. Porous materials are particularly interesting for processes that take place near atmospheric pressure. However, materials design should not only consider the morphology, but also the chemical identity of the CO2 sorbent to enhance the affinity towards CO2. Poly(ionic liquid)s (PILs) can enhance CO2 sorption capacity, but tailoring the porosity is still a challenge. Aerogel’s properties grant production strategies that ensure a porosity control. In this work, we joined both worlds, PILs and aerogels, to produce a sustainable CO2 sorbent. PIL-chitosan aerogels (AEROPILs) in the form of beads were successfully obtained with high porosity (94.6–97.0%) and surface areas (270–744 m2/g). AEROPILs were applied for the first time as CO2 sorbents. The combination of PILs with chitosan aerogels generally increased the CO2 sorption capability of these materials, being the maximum CO2 capture capacity obtained (0.70 mmol g−1, at 25 °C and 1 bar) for the CHT:P[DADMA]Cl30%AEROPIL.

APA, Harvard, Vancouver, ISO, and other styles

Stadler, Tabea J., Philipp Barbig, Julian Kiehl, Rafael Schulz, Thomas Klövekorn, and Peter Pfeifer. "Sorption-Enhanced Water-Gas Shift Reaction for Synthesis Gas Production from Pure CO: Investigation of Sorption Parameters and Reactor Configurations." Energies 14, no. 2 (2021): 355. http://dx.doi.org/10.3390/en14020355.

Full text

Abstract:

A sorption-enhanced water-gas shift (SEWGS) system providing CO2-free synthesis gas (CO + H2) for jet fuel production from pure CO was studied. The water-gas shift (WGS) reaction was catalyzed by a commercial Cu/ZnO/Al2O3 catalyst and carried out with in-situ CO2 removal on a 20 wt% potassium-promoted hydrotalcite-derived sorbent. Catalyst activity was investigated in a fixed bed tubular reactor. Different sorbent materials and treatments were characterized by CO2 chemisorption among other analysis methods to choose a suitable sorbent. Cyclic breakthrough tests in an isothermal packed bed microchannel reactor (PBMR) were performed at significantly lower modified residence times than those reported in literature. A parameter study gave an insight into the effect of pressure, adsorption feed composition, desorption conditions, as well as reactor configuration on breakthrough delay and adsorbed amount of CO2. Special attention was paid to the steam content. The significance of water during adsorption as well as desorption confirmed the existence of different adsorption sites. Various reactor packing concepts showed that the interaction of relatively fast reaction and relatively slow adsorption kinetics plays a key role in the SEWGS process design at low residence time conditions.

APA, Harvard, Vancouver, ISO, and other styles

Full text

Abstract:

APA, Harvard, Vancouver, ISO, and other styles

Mohd Daud, Farah Diana, Srimala Sreekantan, and Abdul Rahman Mohamed. "CTAB-Assisted Precipitation Synthesis of Ca(OH)₂ Sorbent for CO₂ Captures." Materials Science Forum 840 (January 2016): 416–20. http://dx.doi.org/10.4028/www.scientific.net/msf.840.416.

Full text

Abstract:

Ca (OH)2 sorbent with novel pods bundle structure were successfully synthesized by precipitation method by using Cetyltrimethylammonium bromide (CTAB) as cationic surfactant. The effects of CTAB on the morphologies of Ca (OH)2 sorbent were investigated. The results showed that the presence of CTAB could significantly differ the shape and particle size of the Ca (OH)2 sorbent which synthesized in ethanol media at 35°C for 30 minutes. The XRD pattern indicated that the as-prepared product were well-crystallized hexagonal phase of Ca (OH)2 sorbent. Possible mechanisms for the CTAB assisted particle growth of Ca (OH)2 sorbent are discussed. The Ca (OH)2 sorbent have been studied by thermal gravimetric analyzer (TGA) at a 650oC carbonation temperature. The morphological changes and particle size of the sorbent have greatly influenced the CO2 capture performance.

APA, Harvard, Vancouver, ISO, and other styles

Lin, Cheng, Hui Yun Zhang, Xiao Ying Lin, and Yun Fei Feng. "Adsorption CO₂ on Activated Carbon with Surface Modification." Advanced Materials Research 634-638 (January 2013): 746–50. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.746.

Full text

Abstract:

The success of CO2 capture from flue gas with solid sorbent is dependent of a low cost sorbent with high CO2 adsorption capacity and selectivity. Modifying surface texture of activated carbon with impregnating amines is expected to offer the benefits of liquid amines in the typical adsorption process routes. In this work, cocoanut activate carbon (AC) is firstly alkalified by KOH solution, then modified by impregnation of tetraethylenepentamine (TEPA), triethylenetetramine (TATA), and triethanolamine (TEA) to form a new type of sorbents. The effects of alkalifying treatment and temperature on CO2 adsorption capacities of the sorbents are investigated. Results indicate that the activate carbons modified by combining alkalification pretreatment firstly and then impregnated amines at low temperature are profitable for CO2 adsorption. The adsorption capacities of CO2 are enhanced with TEPA and TETA impregnation on the activate carbon pretreated by KOH solution. And CO2 adsorption capacity of new sorbents is stable after many adsorption and desorption cycles.

APA, Harvard, Vancouver, ISO, and other styles

Yang, Shi Mei, Shao Yun Shan, Qing Ming Jia, Ting Wei Hu, Li Hong Jiang, and Ya Ming Wang. "Preparation of Fibrous CaO Sorbent by Hydrothermal Method." Advanced Materials Research 534 (June 2012): 86–88. http://dx.doi.org/10.4028/www.scientific.net/amr.534.86.

Full text

Abstract:

Using urea and calcium chloride as precipitator and calcium source, fibrous CaCO3 precursors were prepared using hydrothermal method, then fibrous CaO sorbent was obtained by calcination. The influence of hydrothermal temperature on CO2 absorption properties was discussed. X-ray diffraction analysis showed that pure CaCO3 phase with aragonite and calcite crystal forms was obtained. Scanning electron microscopy analysis showed that the resultant CaO sorbent presented a fibrous microstructure, which inherited the morphologies of CaCO3. The absorption capacity of the resultant CaO sorbent reached 59.86%, being 76% of theoretical absorption capacity. In addition, compared with the CaO sorbent from analytical pure CaCO3, the obtained fibrous CaO-sorbent have the better cyclic absorption properties.

APA, Harvard, Vancouver, ISO, and other styles

Rodaev, Vyacheslav V., and Svetlana S. Razlivalova. "The Zr-Doped CaO CO2 Sorbent Fabricated by Wet High-Energy Milling." Energies 13, no. 16 (2020): 4110. http://dx.doi.org/10.3390/en13164110.

Full text

Abstract:

We fabricated the Zr-doped CaO sorbent for high-temperature CO2 capture by the wet high-energy co-milling of calcium carbonate and natural zirconium dioxide (baddeleyite) for the first time. The morphology of the material was examined by scanning electron microscopy, energy-dispersive X-ray analysis and X-ray diffraction. Its CO2 uptake capacity was determined using thermogravimetric analysis. After 50 carbonation–calcination cycles, the Zr-doped CaO sorbent characterized by a high enough CO2 uptake capacity of 8.6 mmol/g and unchanged microstructure due to CaZrO3 nanoparticles uniformly distributed in the CaO matrix to prevent CaCO3 sintering under carbonation. The proposed easy-to-implement CaO-based sorbents fabrication technique is promising for industrial application.

APA, Harvard, Vancouver, ISO, and other styles

Shin, Seong-Sik, Seul yi Kim, Hyun Woo Kang та Jae-Hwan Yang. "CO2 포집을 위한 에어로졸 기반 CaO 흡착제 개발". Journal of the Korean Society of Urban Environment 23, № 3 (2023): 95–103. http://dx.doi.org/10.33768/ksue.2023.23.3.95.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Tomaszewicz, Grzegorz, Michalina Kotyczka-Morańska, and Agnieszka Plis. "Studies on the carbonation of Czatkowice limestone in Calcium Looping process." Polish Journal of Chemical Technology 18, no. 2 (2016): 53–58. http://dx.doi.org/10.1515/pjct-2016-0029.

Full text

Abstract:

Abstract The growing demand for the reduction of anthropogenic CO2 emissions has stimulated the development of CO2 capture methods. One of the best capture methods comprises the calcium looping process, which incorporates calcium-based sorbents during the calcination and carbonation cycles. Czatkowice limestone may be considered to be a prospective chemical sorbent for the calcium looping process because of its formation characteristics. This paper addresses the thermogravimetric studies conducted under varying conditions of temperature and various concentrations of CO2 during the carbonation cycles. Moreover, a kinetic analysis of the carbonation stage was performed for the calcined sample at varying temperatures. The kinetic parameters for calcination and diffusion were determined. In addition, there was an increase in the concentration of CO2 with an increased carbonation conversion. The research results demonstrate that in further cycles of carbonation/calcination, the calcium sorbent reaches a higher rate of carbonation conversion with increased levels of CO2.

APA, Harvard, Vancouver, ISO, and other styles

Lee, Joong Beom, Tae Hyoung Eom, Keun Woo Park, et al. "CO2 capture from syngas using solid CO2 sorbent and WGS catalyst." Energy Procedia 4 (2011): 1133–38. http://dx.doi.org/10.1016/j.egypro.2011.01.165.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Hasyim, Mariana. "PENYERAPAN GAS CO HASIL PEMBAKARAN SAMPAH MENGGUNAKAN MODIFIKASI SORBENT CA(OH)2, TANAH DIATOMEAE (DE) DAN KOMPOS DALAM REACTOR FIXED BED." Jurnal Purifikasi 13, no. 2 (2020): 25–33. http://dx.doi.org/10.12962/j25983806.v13.i2.397.

Full text

Abstract:

Penelitian ini bertujuan untuk meningkatkan reaktifitas sorbent Ca(OH)2 dengan menggunakan tanah diatomeae sebagai sumber silika dan kompos sebagai sumber biosorbent. Tanah diatomea umumnya mengandung CaO, SiO2 dan Al2O3. Reaksi antara SiO2 dengan Ca(OH)2 membentuk kalsium silicate hidrat (CaO.SiO2.2H2O) yang mempunyai porositas dan reaktifitas yang tinggi. Kompos mengandung bakteri sebagai biosorbent yang dapat mengubah gas CO menjadi CO2 dan CH4. Hasil penelitian menunjukkan bahwa reaktifitas sorbent Ca(OH)2 meningkat dengan penambahan DE dan kompos. Hasil penelitian juga menunjukkan bahwa penyerapan gas CO meningkat dengan meningkatnya tinggi unggun sorbent dan temperatur. Penyerapan gas CO tertinggi diperoleh pada penggunaan modifikasi sorbent Ca(OH)2/DE/kompos (3:1:1), temperatur 150oC dan tinggi unggun sorbent 6 cm dari variabel yang dilakukan.

APA, Harvard, Vancouver, ISO, and other styles

Hu, Yingchao, Ruicheng Fu, Wenqiang Liu, Dingding Yao, and Shuiping Yan. "Lithium-based ceramics in nonsilicates for CO₂ capture: current status and new trends." Journal of Materials Chemistry A 10, no. 4 (2022): 1706–25. http://dx.doi.org/10.1039/d1ta09629j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Ignatusha, Pavlo, Haiqing Lin, Noe Kapuscinsky, et al. "Membrane Separation Technology in Direct Air Capture." Membranes 14, no. 2 (2024): 30. http://dx.doi.org/10.3390/membranes14020030.

Full text

Abstract:

Direct air capture (DAC) is an emerging negative CO2 emission technology that aims to introduce a feasible method for CO2 capture from the atmosphere. Unlike carbon capture from point sources, which deals with flue gas at high CO2 concentrations, carbon capture directly from the atmosphere has proved difficult due to the low CO2 concentration in ambient air. Current DAC technologies mainly consider sorbent-based systems; however, membrane technology can be considered a promising DAC approach since it provides several advantages, e.g., lower energy and operational costs, less environmental footprint, and more potential for small-scale ubiquitous installations. Several recent advancements in validating the feasibility of highly permeable gas separation membrane fabrication and system design show that membrane-based direct air capture (m-DAC) could be a complementary approach to sorbent-based DAC, e.g., as part of a hybrid system design that incorporates other DAC technologies (e.g., solvent or sorbent-based DAC). In this article, the ongoing research and DAC application attempts via membrane separation have been reviewed. The reported membrane materials that could potentially be used for m-DAC are summarized. In addition, the future direction of m-DAC development is discussed, which could provide perspective and encourage new researchers’ further work in the field of m-DAC.

APA, Harvard, Vancouver, ISO, and other styles

Spinelli, Maurizio, Isabel Martínez, and Matteo C. Romano. "One-dimensional model of entrained-flow carbonator for CO2 capture in cement kilns by calcium looping process." Chemical Engineering Science 191, no. 2018 (2018): 100–114. https://doi.org/10.1016/j.ces.2018.06.051.

Full text

Abstract:

In this work, a 1D model of an entrained-flow carbonator of a Calcium looping process for cement plants is presented and the results of a sensitivity analysis on the main governing process parameters is discussed. Several design and operating parameters have been investigated through a wide sensitivity analysis, namely: adiabatic vs. cooled reactor, high gas velocity gooseneck reactor vs. low velocity downflow reactor, solid-to-gas ratio, sorbent capacity, reactor inlet temperature and solids recirculation. The effect of these design and process parameters on the CO2 capture efficiency and on Calcium looping process heat consumption is assessed. The results of the calculations showed that with a proper combination of solid-to-gas ratio in the carbonator and sorbent carbonation capacity (e.g. about 10 kg/Nm3 and 20% respectively), carbonator CO2 capture efficiencies of about 80% (i.e. total cement kiln CO2 capture efficiencies higher than 90%) can be obtained in a gooseneck-type carbonator with a length compatible with industrial applications in cement kilns (about 120 to 140 m). Further experimental investigations on this reactor concept, especially about fluid-dynamic behavior and the chemical properties of raw meal as CO2 sorbent, are needed to demonstrate the technical feasibility of the proposed process.

APA, Harvard, Vancouver, ISO, and other styles

Kuznetsova, Ekaterina, and Nikolay Nevedrov. "Organo-mineral sorbents and their effect on the rate of carbon dioxide emission from the surface of agro dark gray soil." АгроЭкоИнфо 5, no. 59 (2023): 27. http://dx.doi.org/10.51419/202135527.

Full text

Abstract:

The article presents data on the influence of sorbents on the dynamics of microbial respiration of agro dark gray soil. The rate of CO2 emission from soils treated with Keloway clay and sorbent based on sapropel and lime agrotem-gray soils increased by 72.8 83.5% relative to soils without sorbents. Keywords: SORBENT, SAPROPEL, LIME, HEAVY METALS, AGRO DARK GRAY SOIL, MICROBIOLOGICAL ACTIVITY

APA, Harvard, Vancouver, ISO, and other styles

Ping, Chao, Bao-Qi Feng, Yun-Lei Teng, et al. "Acquiring an effective CaO-based CO2 sorbent and achieving selective methanation of CO2." RSC Advances 10, no. 36 (2020): 21509–16. http://dx.doi.org/10.1039/d0ra02495c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Ávila, I., A. Mortari, A. M. Santos, and P. M. Crnkovic. "THE CALCIUM LOOPING CYCLE STUDY FOR CAPTURING CARBON DIOXIDE APPLIED TO THE ENERGY GENERATION." Revista de Engenharia Térmica 12, no. 2 (2013): 28. http://dx.doi.org/10.5380/reterm.v12i2.62041.

Full text

Abstract:

The calcium looping process (Ca-L) is a promising technology to reduce of the carbon dioxide (CO2) emissions when applied in energy generation systems. Ca-based materials (usually limestone) are used in this process as CO2 sorbents. Thus, the CO2 capture occurs by the reversible reaction between calcium oxide (CaO) and CO2, resulting in the calcium carbonate form (CaCO3). Compared to other technologies applied to carbon sequestration process, the Ca-L offers additional advantages such: the use of fluidized bed technology that is already well established; this process occurs at high temperature, and the excess of heat generated can be recovered; the cost of limestone sorbents is low because of its wide availability. However, in the applying the Ca-L process is essential to understand the mechanism and the effect of partial pressure of CO2 in both, calcination and carbonation processes; to investigate the effect of sintering and to evaluate the sorbent activity decay. In this paper, empirical technique such as thermogravimetry is applied to investigate the reactivity of dolomite as CO2 sorbent. The effect of CO2 high concentrations in both calcination/carbonation processes is also investigated.

APA, Harvard, Vancouver, ISO, and other styles

Dvořák, Michael, Jan Hrdlička, Lukáš Pilař, Pavel Skopec, and Jiří Burda. "CO2 capture in pilot-scale unit using solid adsorbent in biomass fluidised bed boiler flue gas." Acta Polytechnica 64, no. 6 (2025): 501–10. https://doi.org/10.14311/ap.2024.64.0501.

Full text

Abstract:

The search for methods to capture carbon dioxide (CO2) emissions from solid fuel combustion processes has led to the development and subsequent testing of alternative innovative CO2 capture technologies. Vacuum Pressure Swing Adsorption (VPSA) method is a promising technology for efficient CO2 capture using solid sorbents. This article introduces CO2 capture using the VPSA technology, providing description of the selected VPSA method and the construction of a pilot-scale unit for VPSA CO2 capture. The main goal of this article is to present experimental results, including a description of the pilot-scale unit used for the VPSA adsorption tests using zeolite 13X, an industrially proven sorbent for CO2 capture. The measured adsorption values were compared with theoretical isotherms, allowing the assessment of VPSA method efficiency and accuracy in practical conditions. Results indicated discrepancies between the experimental unit and the theoretical adsorption models, attributed to non-ideal conditions, non-optimised processes, incomplete drying of the sorbent, and temperature variations affecting the adsorption efficiency. The conclusion confirms the VPSA lab unit’s ability to adsorb CO2 using solid sorbents, suggesting that further research and additional tests with new alternative sorbents is needed.

APA, Harvard, Vancouver, ISO, and other styles

Ali, Fawaz, Sanat Vibhas Modak, and David G. Kwabi. "Elucidating the Performance Limits for Electrochemical CO₂ Separation Using Exergy Loss Analysis and Zero-Dimensional Modeling." ECS Meeting Abstracts MA2023-01, no. 45 (2023): 2485. http://dx.doi.org/10.1149/ma2023-01452485mtgabs.

Full text

Abstract:

The use of renewable electricity to power electrochemical CO2 removal and concentration from point sources, air, and seawater is receiving considerable interest as one strategy in our portfolio of options for mitigating climate change. Two common embodiments of this idea involve CO2 separation via electrochemically reversible binding of CO2 to a nucleophilic redox mediator, or a pH swing/gradient in aqueous solution. For either embodiment to be feasible, the energetic cost of regenerating the sorbent should be low at practical separation throughputs. Consequently, there have been a number of efforts to understand how the thermodynamic minimum work input for a given separation cycle varies under different conditions using modeling. In this talk, we demonstrate that the thermodynamic minimum work input for electrochemical CO2 separation is the sum of exergy losses incurred from differences between the partial pressure of CO2 within the CO2 source/exit streams and the partial pressure of CO2 in the sorbent. This framework rationalizes minimum work inputs for pH-swing and redox-mediator-based CO2 separation cycles, and motivates the measurement or estimation of the aforementioned CO2 partial pressures in experimental studies. Applying a zero-dimensional model recently developed in our group to pH-swing-driven CO2 separation, we will then discuss how the total energetic cost of CO2 separation can be simulated under a variety of scenarios relevant to practical CO2 concentration from flue gas.

APA, Harvard, Vancouver, ISO, and other styles

Zulfiqar, Sonia, and Muhammad Ilyas Sarwar. "Aramid as potential solid Sorbent for CO2 capture." Polymer Science Series B 57, no. 6 (2015): 702–9. http://dx.doi.org/10.1134/s1560090415060184.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Knight, A., N. Ellis, J. R. Grace, and C. J. Lim. "CO2 sorbent attrition testing for fluidized bed systems." Powder Technology 266 (November 2014): 412–23. http://dx.doi.org/10.1016/j.powtec.2014.06.013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Vieira, Rômulo B., and Heloise O. Pastore. "Polyethylenimine-Magadiite Layered Silicate Sorbent for CO2 Capture." Environmental Science & Technology 48, no. 4 (2014): 2472–80. http://dx.doi.org/10.1021/es404501e.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Mohamad Ali, Abdussalam Salhin, Norfarhah Abdul Razak, and Ismail Ab Rahman. "Bach Adsorption Study for the Extraction of Silver Ions by Hydrazone Compounds from Aqueous Solution." Scientific World Journal 2012 (2012): 1–10. http://dx.doi.org/10.1100/2012/351967.

Full text

Abstract:

Sorbent materials based on a hydrazone Schiff base compound, C14H11BrN4O4, were prepared either by immobilizing the ligand into sol-gel (SG1) or bonding to silica (SG2). The sorbent materials were characterized by FT-IR, EDX, SEM, TEM, and TGA. The sorption characteristics of a matrix of eight transition metal ions (Ag+, Cu2+, Co2+, Ni2+, Fe3+, Pb2+, Zn2+, and Mn2+) using batch method were studied. Several key parameters that affected the extraction efficiency such as pH, contact time, metal ions concentration, and gel size (for SGl) were investigated and optimized. Under the optimized conditions, the physically immobilized hydrazone sorbent (SG1) exhibits highest selectivity towards Ag+ions, while the chemically bonded hydrazone sorbent (SG2) exhibits high extraction for all metal ions tested. However, for practical applications such as the removal and preconcentration of Ag+, the physically immobilized sorbent (SG1) is preferred.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!