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Hao YY, Xiao MX, Mao GC, Wang JP, Guo ZK, Dong BX, Teng YL. Green preparation of CaO-based CO 2 adsorbent by calcium-induced hydrogenation of shell wastes at room/moderate temperature. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 359:120782. [PMID: 38669884 DOI: 10.1016/j.jenvman.2024.120782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/28/2024]
Abstract
Capturing CO2 using clamshell/eggshell-derived CaO adsorbent can not only reduce carbon emissions but also alleviate the impact of trash on the environment. However, organic acid was usually used, high-temperature calcination was often performed, and CO2 was inevitably released during preparing CaO adsorbents from shell wastes. In this work, CaO-based CO2 adsorbent was greenly prepared by calcium-induced hydrogenation of clamshell and eggshell wastes in one pot at room/moderate temperature. CO2 adsorption experiments were performed in a thermogravimetric analyzer (TGA). The adsorption performance of the adsorbents obtained from the mechanochemical reaction (BM-C/E-CaO) was superior to that of the adsorbents obtained from the thermochemical reaction (Cal-C/E-CaO). The CO2 adsorption capacity of BM-C-CaO at 650 °C is up to 36.82 wt%, but the adsorption decay rate of the sample after 20 carbonation/calcination cycles is only 30.17%. This study offers an alternative energy-saving method for greenly preparing CaO-based adsorbent from shell wastes.
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Affiliation(s)
- Yang-Yang Hao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Ming-Xiu Xiao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Guo-Cui Mao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Jin-Peng Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Zhan-Kuo Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Bao-Xia Dong
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China.
| | - Yun-Lei Teng
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China.
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2
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Afandi N, Satgunam M, Mahalingam S, Manap A, Nagi F, Liu W, Johan RB, Turan A, Wei-Yee Tan A, Yunus S. Review on the modifications of natural and industrial waste CaO based sorbent of calcium looping with enhanced CO 2 capture capacity. Heliyon 2024; 10:e27119. [PMID: 38444493 PMCID: PMC10912718 DOI: 10.1016/j.heliyon.2024.e27119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 02/06/2024] [Accepted: 02/23/2024] [Indexed: 03/07/2024] Open
Abstract
The calcium looping cycle (CaL) possesses outstanding CO2 capture capacity for future carbon-capturing technologies that utilise CaO sorbents to capture the CO2 in a looping cycle. However, sorbent degradation and the presence of inert materials stabilise the sorbent, thereby reducing the CO2 capture capacity. Consequently, the CaO sorbent that has degraded must be replenished, increasing the operational cost for industrial use. CaO sorbents have been modified to enhance their CO2 capture capacity and stability. However, various CaO sorbents, including limestone, dolomite, biogenesis calcium waste and industrial waste, exhibit distinct behaviour in response to these modifications. Thus, this work comprehensively reviews the CO2 capture capacity of sorbent improvement based on various CaO sorbents. Furthermore, this study provides an understanding of the effects of CO2 capture capacity based on the properties of the CaO sorbent. The properties of various CaO sorbents, such as surface area, pore volume, particle size and morphology, are influential in exhibiting high CO2 capture capacity. This review provides insights into the future development of CaL technology, particularly for carbon-capturing technologies that focus on the modifications of CaO sorbents and the properties that affect the CO2 capture capacity.
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Affiliation(s)
- Nurfanizan Afandi
- Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia
- Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia
| | - M. Satgunam
- Institute of Power Engineering (IPE), Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, Malaysia
| | - Savisha Mahalingam
- Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia
| | - Abreeza Manap
- Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia
- Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia
| | - Farrukh Nagi
- UNITEN R&D Sdn Bhd, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia
| | - Wen Liu
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Rafie Bin Johan
- Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Ahmet Turan
- Materials Science and Nanotechnology Engineering Department, Faculty of Engineering, Yeditepe University, 34755, Atasehir, Istanbul, Turkey
| | - Adrian Wei-Yee Tan
- Smart Manufacturing and Systems Research Group (SMSRG), University of Southampton Malaysia, Iskandar Puteri, 79100, Malaysia
| | - Salmi Yunus
- Materials Engineering and Testing Group, TNB Research Sdn Bhd, Kawasan Institusi Penyelidikan, No. 1 Lorong Ayer Itam, Kajang, 43000, Selangor, Malaysia
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3
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Akter T, Abdur R, Shahinuzzaman M, Jamal MS, Gafur MA, Roy SK, Aziz S, Shaikh MAA, Hossain M. Effect of Reaction Parameters on CO 2 Absorption from Biogas Using CaO Sorbent Prepared from Waste Chicken Eggshell. ACS OMEGA 2023; 8:43000-43007. [PMID: 38024727 PMCID: PMC10652361 DOI: 10.1021/acsomega.3c06226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/17/2023] [Accepted: 10/20/2023] [Indexed: 12/01/2023]
Abstract
This study provides an efficient and straightforward approach to eliminate carbon dioxide (CO2) by absorption using a calcium oxide (CaO) sorbent derived from chicken eggshells. The sorbent concentration, stirring speed, and contact time were varied. The optimal condition for CO2 removal was a 10% calcium hydroxide (Ca(OH)2) suspension at 600 rpm with 20 min interaction. This optimum condition conferred the ever-highest absorption (98.71%) of CO2 through Ca(OH)2 suspensions from eggshell-derived CaO. X-ray diffraction was used to identify crystallographic phases and optimum conditions revealed calcium carbonate (CaCO3) formation with the highest intensity, Fourier transform infrared spectroscopy revealed peaks for the carbonate (CO32-) group, field emission scanning electron microscopy was used to investigate the morphological and structural properties of the sorbent before and after CO2 absorption, and thermogravimetric analysis was performed to understand the reaction mechanism. According to the kinetic analysis, the sorbent can be fully decomposed with a minimum activation energy (Ea) of 89.09 kJ/mol.
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Affiliation(s)
- Taslima Akter
- Institute
of Fuel Research and Development, Bangladesh
Council of Scientific and Industrial Research (BCSIR), Dr. Qudrat-E-Khuda Road, Dhanmandi, Dhaka 1205, Bangladesh
| | - Rahim Abdur
- Institute
of Fuel Research and Development, Bangladesh
Council of Scientific and Industrial Research (BCSIR), Dr. Qudrat-E-Khuda Road, Dhanmandi, Dhaka 1205, Bangladesh
| | - Mohammad Shahinuzzaman
- Institute
of Fuel Research and Development, Bangladesh
Council of Scientific and Industrial Research (BCSIR), Dr. Qudrat-E-Khuda Road, Dhanmandi, Dhaka 1205, Bangladesh
| | - Mohammad Shah Jamal
- Institute
of Fuel Research and Development, Bangladesh
Council of Scientific and Industrial Research (BCSIR), Dr. Qudrat-E-Khuda Road, Dhanmandi, Dhaka 1205, Bangladesh
| | - Mohammad Abdul Gafur
- Pilot
Plant and Process Development Center, Bangladesh
Council of Scientific and Industrial Research (BCSIR), Dr. Qudrat-E-Khuda Road, Dhanmandi, Dhaka 1205, Bangladesh
| | - Swapan Kumer Roy
- BCSIR
Laboratories, Bangladesh Council of Scientific
and Industrial Research (BCSIR), Dr. Qudrat-E-Khuda Road, Dhanmandi, Dhaka 1205, Bangladesh
| | - Shahin Aziz
- BCSIR
Laboratories, Bangladesh Council of Scientific
and Industrial Research (BCSIR), Dr. Qudrat-E-Khuda Road, Dhanmandi, Dhaka 1205, Bangladesh
| | - Md. Aftab Ali Shaikh
- Bangladesh
Council of Scientific and Industrial Research (BCSIR), Dr. Qudrat-E-Khuda Road, Dhanmandi, Dhaka 1205, Bangladesh
- Department
of Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
| | - Mosharof Hossain
- Institute
of Fuel Research and Development, Bangladesh
Council of Scientific and Industrial Research (BCSIR), Dr. Qudrat-E-Khuda Road, Dhanmandi, Dhaka 1205, Bangladesh
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Teixeira P, Afonso E, Pinheiro CI. Tailoring waste-derived materials for Calcium-Looping application in thermochemical energy storage systems. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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5
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Xiao MX, Tai YL, Wang JP, Kan XT, Dong BX, Liu WL, Teng YL. One-pot preparation of H 2-mixed CH 4 fuel and CaO-based CO 2 sorbent by the hydrogenation of waste clamshell/eggshell at room temperature. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115617. [PMID: 35803071 DOI: 10.1016/j.jenvman.2022.115617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/24/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
The preparation of clean fuel or CO2 adsorbents using industrial and domestic garbage is an alternative way of meeting global energy needs and alleviating environmental problems. Herein, H2-mixed CH4 fuel and CaO-based CO2 sorbent were first prepared in one pot by the mechanochemical reaction of pretreated clamshell or eggshell wastes (carbon and calcium source) with calcium hydride (hydrogen source) at room temperature. In the above reactions, CH4 was the sole hydrocarbon product, and its yield reached 78.23%. The H2/CH4 ratio of the produced H2-mixed CH4 fuel was tunable according to the need by changing the reaction conditions. It is inspiring that the simultaneously formed solid CaO/carbon products were efficient CaO-based sorbents, which possessed a higher CO2 adsorption capacity (49.81-58.74 wt.%) at 650 °C and could maintain good adsorption stability in 30 carbonation/calcination cycles (average activity loss per cycle of only 1.6%). The three achievements of the idea are that it can simultaneously eliminate clamshell or eggshell wastes, obtain valuable clean fuel, and acquire efficient CaO-based sorbents.
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Affiliation(s)
- Ming-Xiu Xiao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Yun-Long Tai
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Jin-Peng Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Xiao-Tian Kan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Bao-Xia Dong
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China.
| | - Wen-Long Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China
| | - Yun-Lei Teng
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China.
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6
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Hydrogen Production with In Situ CO2 Capture at High and Medium Temperatures Using Solid Sorbents. ENERGIES 2022. [DOI: 10.3390/en15114039] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hydrogen is a versatile vector for heat and power, mobility, and stationary applications. Steam methane reforming and coal gasification have been, until now, the main technologies for H2 production, and in the shorter term may remain due to the current costs of green H2. To minimize the carbon footprint of these technologies, the capture of CO2 emitted is a priority. The in situ capture of CO2 during the reforming and gasification processes, or even during the syngas upgrade by water–gas shift (WGS) reaction, is especially profitable since it contributes to an additional production of H2. This includes biomass gasification processes, where CO2 capture can also contribute to negative emissions. In the sorption-enhanced processes, the WGS reaction and the CO2 capture occur simultaneously, the selection of suitable CO2 sorbents, i.e., with high activity and stability, being a crucial aspect for their success. This review identifies and describes the solid sorbents with more potential for in situ CO2 capture at high and medium temperatures, i.e., Ca- or alkali-based sorbents, and Mg-based sorbents, respectively. The effects of temperature, steam and pressure on sorbents’ performance and H2 production during the sorption-enhanced processes are discussed, as well as the influence of catalyst–sorbent arrangement, i.e., hybrid/mixed or sequential configuration.
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7
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Analysis of Engineering Characteristics and Microscopic Mechanism of Red Mud–Bauxite Tailings Mud Foam Light Soil. MATERIALS 2022; 15:ma15051782. [PMID: 35269013 PMCID: PMC8912103 DOI: 10.3390/ma15051782] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/09/2022] [Accepted: 02/16/2022] [Indexed: 11/23/2022]
Abstract
In order to effectively utilize aluminum industrial waste—red mud and bauxite tailings mud—and reduce the adverse impact of waste on the environment and occupation of land resources, a red mud–bauxite tailings mud foam lightweight soil was developed based on the existing research results. Experiments were conducted to investigate the mechanical properties and microscopic characteristics of the developed materials with different proportions of red mud and bauxite tailings mud. Results show that with the increase in red mud content, the wet density and fluidity of the synthetic sample was increased. With 16% red mud content, the water stability coefficient of the synthetic sample reached its maximum of 0.826, as well as the unconfined compressive strength (UCS) of the sample cured for 28 d (1.056 MPa). SEM images reveal that some wastes of the sample without red mud were agglomerated, the peripheral hydration products were less wrapped, and when the amount of red mud was 16%, the hydration products tightly wrapped the waste particles and increased the structural compactness. The final concentration of alkali leaching of samples increased with the addition of red mud. The maximum concentration of alkali leaching was 384 mg/L for the group with the addition of red mud of 16%. Based on the obtained mechanical strength and alkali release analysis, the sample B24R16 was selected as the optimum among all tested groups. This study explored a way to reuse aluminum industrial waste, and the results are expected to be applied to roadbed and mining filling.
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8
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Blending Wastes of Marble Powder and Dolomite Sorbents for Calcium-Looping CO 2 Capture under Realistic Industrial Calcination Conditions. MATERIALS 2021; 14:ma14164379. [PMID: 34442902 PMCID: PMC8398223 DOI: 10.3390/ma14164379] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/24/2021] [Accepted: 07/26/2021] [Indexed: 11/17/2022]
Abstract
The use of wastes of marble powder (WMP) and dolomite as sorbents for CO2 capture is extremely promising to make the Ca-looping (CaL) process a more sustainable and eco-friendly technology. For the downstream utilization of CO2, it is more realistic to produce a concentrated CO2 stream in the calcination step of the CaL process, so more severe conditions are required in the calciner, such as an atmosphere with high concentration of CO2 (>70%), which implies higher calcination temperatures (>900 °C). In this work, experimental CaL tests were carried out in a fixed bed reactor using natural CaO-based sorbent precursors, such as WMP, dolomite and their blend, under mild (800 °C, N2) and realistic (930 °C, 80% CO2) calcination conditions, and the sorbents CO2 carrying capacity along the cycles was compared. A blend of WMP with dolomite was tested as an approach to improve the CO2 carrying capacity of WMP. As regards the realistic calcination under high CO2 concentration at high temperature, there is a strong synergetic effect of inert MgO grains of calcined dolomite in the blended WMP + dolomite sorbent that leads to an improved stability along the cycles when compared with WMP used separately. Hence, it is a promising approach to tailor cheap waste-based blended sorbents with improved carrying capacity and stability along the cycles under realistic calcination conditions.
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Abdelkareem MA, Lootah MA, Sayed ET, Wilberforce T, Alawadhi H, Yousef BAA, Olabi AG. Fuel cells for carbon capture applications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 769:144243. [PMID: 33493911 DOI: 10.1016/j.scitotenv.2020.144243] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/13/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
The harmful effect of carbon pollution leads to depletion of the ozone layer, which is one of the main challenges confronting the world. Although progress is made in developing different carbon dioxide (CO2) capturing methods, these methods are still expensive and face several technical challenges. Fuel cells (FCs) are efficient energy converting devices that produce energy via an electrochemical process. Recently varying kinds of fuel cells are considered as an effective method for CO2 capturing and/or conversion. Among the different types of fuel cells, solid oxide fuel cells (SOFCs), molten carbonate fuel cells (MCFCs), and microbial fuel cells (MFCs) demonstrated promising results in this regard. High-temperature fuel cells such as SOFCs and MCFCs are effectively used for CO2 capturing through their electrolyte and have shown promising results in combination with power plants or industrial effluents. An algae-based microbial fuel cell is an electrochemical device used to capture and convert carbon dioxide through the photosynthesis process using algae strains to organic matters and simultaneously power generation. This review present a brief background about carbon capture and storage techniques and the technological advancement related to carbon dioxide captured by different fuel cells, including molten carbonate fuel cells, solid oxide fuel cells, and algae-based fuel cells.
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Affiliation(s)
- Mohammad Ali Abdelkareem
- Dept. of Sustainable and Renewable Energy Engineering, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates; Center for Advanced Materials Research, Research Institute Of Sciences and Engineering, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates; Chemical Engineering Department, Minia University, Elminia, Egypt
| | - Maryam Abdullah Lootah
- Dept. of Sustainable and Renewable Energy Engineering, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates
| | - Enas Taha Sayed
- Center for Advanced Materials Research, Research Institute Of Sciences and Engineering, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates; Chemical Engineering Department, Minia University, Elminia, Egypt.
| | - Tabbi Wilberforce
- Mechanical Engineering and Design, School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham B4 7ET, UK.
| | - Hussain Alawadhi
- Center for Advanced Materials Research, Research Institute Of Sciences and Engineering, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates; Dept. of Applied Physics, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates
| | - Bashria A A Yousef
- Dept. of Sustainable and Renewable Energy Engineering, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates
| | - A G Olabi
- Dept. of Sustainable and Renewable Energy Engineering, University of Sharjah, PO Box 27272, Sharjah, United Arab Emirates; Mechanical Engineering and Design, School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham B4 7ET, UK.
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10
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Bazaikin Y, Malkovich E, Prokhorov D, Derevschikov V. Detailed modeling of sorptive and textural properties of CaO-based sorbents with various porous structures. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117746] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Mohamed M, Yusup S, Loy ACM. Effect of Empty Fruit Bunch in Calcium Oxide for Cyclic CO
2
Capture. Chem Eng Technol 2019. [DOI: 10.1002/ceat.201800649] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mustakimah Mohamed
- Universiti Teknologi PETRONASHICOE – Center for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Chemical Engineering Lebuhraya Ipoh-Lumut 32610 Seri Iskandar, Perak Malaysia
| | - Suzana Yusup
- Universiti Teknologi PETRONASHICOE – Center for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Chemical Engineering Lebuhraya Ipoh-Lumut 32610 Seri Iskandar, Perak Malaysia
| | - Adrian Chun Minh Loy
- Universiti Teknologi PETRONASHICOE – Center for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Department of Chemical Engineering Lebuhraya Ipoh-Lumut 32610 Seri Iskandar, Perak Malaysia
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Zhang Y, He L, Ma A, Jia Q, He S, Shan S. CaO-based sorbent derived from lime mud and bauxite tailings for cyclic CO 2 capture. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:28015-28024. [PMID: 30066075 DOI: 10.1007/s11356-018-2825-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 07/20/2018] [Indexed: 06/08/2023]
Abstract
Using aluminum nitrate (AlN) and bauxite tailings (BTs) as different dopants, and lime mud (LM) as calcium source, a series of CaO-based sorbents were prepared for CO2 capture by dry mixing method; then, the carbonation conversions of multiple carbonation/calcination cycles were detected in a thermogravimetric analyzer (TGA). Effects of different dopants, dopant contents, precalcination conditions, and a long series of cycles on CO2 absorption properties were scrutinized, and the phase composition and morphologies were tested by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Durability studies show that the sample doped with AlN remains a higher absorption conversion (30.88%) after 30 carbonation/calcination cycles. In the meantime, the sorbent doped with BTs showed a lower conversion, which is probably resulted from the impurities from waste BTs. However, the sample BT has a better cyclic absorption stability. In addition, the incorporation of BTs, as a kind of solid waste, not only decreases the preparation cost but also is good for environment. The occurrence of Ca12Al14O33 phase is considered to provide a stable framework inhibiting inactivation of CaO, and improve the CO2 adsorption stability. Graphical abstract ᅟ.
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Affiliation(s)
- Yaqin Zhang
- School of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Lei He
- School of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Aihua Ma
- School of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Qingming Jia
- School of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
| | - Shanchuan He
- School of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650093, China
| | - Shaoyun Shan
- School of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
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13
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Salaudeen SA, Acharya B, Dutta A. CaO-based CO2 sorbents: A review on screening, enhancement, cyclic stability, regeneration and kinetics modelling. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2017.11.012] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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