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Journals
Atmosphere
Special Issues
CO2 Sequestration, Capture and Utilization
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CO2 Sequestration, Capture and Utilization

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Air Pollution Control".

Deadline for manuscript submissions: closed (6 January 2023) | Viewed by 12064

Special Issue Editors

Prof. Dr. Qingjie Guo

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Guest Editor
1. Shandong Provincial Key Laboratory of Clean Chemical Process, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
2. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
Interests: chemical looping combustion/gasification; CO2 capture and utilization technology; renewable energy; particle technology; energy and environmental engineering
Special Issues, Collections and Topics in MDPI journals
Dr. Yongzhuo Liu

E-Mail Website
Guest Editor
Shandong Provincial Key Laboratory of Clean Chemical Process, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Interests: chemical looping gasification; chemical looping pyrolysis; redox catalyst
Dr. Man Wu

E-Mail Website
Guest Editor
Shandong Provincial Key Laboratory of Clean Chemical Process, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
Interests: clean and efficient utilization of soild waste; catalytic conversion of CO2; particle fluidization coating
Prof. Dr. Guojie Zhang

E-Mail Website
Guest Editor
State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
Interests: CO2 capture; CO2 reforming; porous material; TEPA; adsorption; kinetics

Special Issue Information

Dear Colleagues,

With the progress of industrialization, large amounts of fossil energy are burned, and forest areas are reduced. These factors have led to an increase in the emission of greenhouse gas carbon dioxide and a worsening of global warming, making this an extremely serious environmental challenge for all of humanity to face. In recent years, countries have become aware of the seriousness of the greenhouse effect, and in 2016, they adopted and signed the Paris Agreement, which aims to reduce CO2 emissions and thus improve the living environment of human beings. Carbon Capture, Storage and Utilization (CCUS) technology can absorb, fix and utilize the emitted CO2, which means that the released CO2 can be separated from the emission sources such as industrial exhaust and be stored or reused for a long time. Therefore, CCUS technology can be very effective in reducing CO2 emissions and can greatly mitigate the greenhouse effect.

This Special Issue focuses on reviews and research papers related to CO2 capture, storage and utilization technologies, including the following research topics:

  • Design, development or optimization of CO2 capture, storage and utilization processes;
  • New CO2 adsorption materials (e.g., activated carbon, molecular sieves, MOFs, etc.);
  • Novel catalysts for CO2 utilization (e.g., photocatalysts, electrocatalysts or thermocatalysts);
  • Novel CO2 separation materials (e.g., membrane materials, ionic solutions, etc.);
  • New CO2 sequestration technology;
  • CO2 reduction policies.

Prof. Dr. Qingjie Guo
Dr. Yongzhuo Liu
Dr. Man Wu
Prof. Dr. Guojie Zhang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • CO2
  • carbon capture
  • CO2 sequestration
  • CO2 utilization
  • carbon materials

Published Papers (5 papers)

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Research

11 pages, 2652 KiB  
Article
Highly Efficient Removal of CO2 Using Water-Lean KHCO3/Isopropanol Solutions
by Lei Wang, Mohammad Saeed, Jianmin Luo, Anna Lee, Rowan Simonet, Zhao Sun, Nigel Walker, Matthew Aro, Richard Davis, Mohammad Abu Zahra, Malek Alkasrawi and Sam Toan
Atmosphere 2022, 13(9), 1521; https://doi.org/10.3390/atmos13091521 - 17 Sep 2022
Cited by 1 | Viewed by 2372
Abstract
The use of aqueous carbonate as an inorganic absorbent is not only inexpensive but also stable and environmentally friendly. However, the regeneration processes for aqueous carbonate sorbents require high regeneration heat duty; this energy intensity makes their wide utilization unaffordable. In this work, [...] Read more.
The use of aqueous carbonate as an inorganic absorbent is not only inexpensive but also stable and environmentally friendly. However, the regeneration processes for aqueous carbonate sorbents require high regeneration heat duty; this energy intensity makes their wide utilization unaffordable. In this work, a low-temperature, energy-saving, and environmentally friendly carbon dioxide desorption method has been investigated in potassium bicarbonate-water-alcohol solutions. The addition of alcohol, particularly isopropanol, to the potassium bicarbonate-water solution can significantly increase carbon dioxide desorption capacity. The potassium bicarbonate-water-isopropanol solution used in this study (36 wt % isopropanol) resulted in 15.2 mmol of carbon dioxide desorption within 2400 s at 80 °C, which was 2000-fold higher than the potassium bicarbonate-water-solution. This research demonstrates a water-lean solvent-based carbon dioxide removal route with the potential to be economical, environmentally safe, and energy-efficient. CO2 sequestration, capture, and utilization technologies will play a key role in reducing CO2 emissions. The excellent desorption kinetics and relatively moderate desorption temperatures (80 °C) of water-lean solvent could help in reducing the cost of CO2 capture, particularly in terms of the heat demand at the regenerator. Full article
(This article belongs to the Special Issue CO2 Sequestration, Capture and Utilization)
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15 pages, 4346 KiB  
Article
Revealing the Effects of Water Imbibition on Gas Production in a Coalbed Matrix Using Affected Pore Pressure and Permeability
by Yi Lou, Yuliang Su, Ke Wang, Peng Xia, Wendong Wang, Wei Xiong, Linjie Shao and Fuqin Yang
Atmosphere 2022, 13(8), 1314; https://doi.org/10.3390/atmos13081314 - 18 Aug 2022
Cited by 2 | Viewed by 1303
Abstract
The effect of water imbibition on characteristics of coalbed methane reservoirs, such as permeability, gas occurrence state, and gas production, is controversial. According to the mechanism of imbibition, gas and water distribution in blind pores is reconfigured during the fracturing process. Therefore, a [...] Read more.
The effect of water imbibition on characteristics of coalbed methane reservoirs, such as permeability, gas occurrence state, and gas production, is controversial. According to the mechanism of imbibition, gas and water distribution in blind pores is reconfigured during the fracturing process. Therefore, a new comprehensive model of pore pressure and permeability, based on the perfect gas equation and the weighted superposition of viscous flow and Knudsen diffusion, was established for micro- and nanoscale blind pores during water drainage. Using the numerical simulation module in the Harmony software, the effects of imbibition on coal pore pressure, permeability, and gas production were analyzed. The results showed that (1) water imbibition can increase pore pressure and reduce permeability, and (2) water imbibition is not always deleterious to gas production and estimated ultimate reserve (EUR), when the imbibition is constant, the thicker water film is deleterious to coalbed methane wells; when the thickness of water film is constant, more imbibition is beneficial to gas production and EUR. This research is beneficial to optimize the operation of well shut-ins after fracturing and provides methods for optimizing key parameters of gas reservoirs and insights into understanding the production mechanism of coalbed methane wells. Full article
(This article belongs to the Special Issue CO2 Sequestration, Capture and Utilization)
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15 pages, 5825 KiB  
Article
Effect of Pore Structure on CO2 Adsorption Performance for ZnCl2/FeCl3/H2O(g) Co-Activated Walnut Shell-Based Biochar
by Tuo Guo, Wengang Tian and Yanxia Wang
Atmosphere 2022, 13(7), 1110; https://doi.org/10.3390/atmos13071110 - 14 Jul 2022
Cited by 8 | Viewed by 2133
Abstract
Walnut shell is a very potential biochar precursor because of its wide source, low cost, and easy structure modification. In this paper, the co-activation method of FeCl3, ZnCl2 and H2O(g) was adopted to prepare walnut shell-based biochar with [...] Read more.
Walnut shell is a very potential biochar precursor because of its wide source, low cost, and easy structure modification. In this paper, the co-activation method of FeCl3, ZnCl2 and H2O(g) was adopted to prepare walnut shell-based biochar with high microporosity and the effect of pore structure on CO2 adsorption performance at different temperatures was investigated. The prepared biochar had a larger specific surface area (2647.8 m2 g−1), satisfactory micropore area (2008.7 m2 g−1) and high total pore volume (2.58 cm3 g−1). At 273 K and 298 K, its CO2 adsorption capacity was 4.79 mmol g−1 and 3.20 mmol g−1, respectively. Particularly, CO2 adsorbed uptake on biochar was strongly sensitive to their narrow micropore volume, instead of the total specific surface area, total pore volume, and micropore specific surface area. The optimal pore size beneficial for CO2 adsorption was 0.33–0.82 nm at 273 K, but the optimal pore size was 0.33–0.39 nm at 298 K. It provides theoretical guidance for future material preparation and selection, and FeCl3, ZnCl2 and H2O(g) may be effective biochar activators. Full article
(This article belongs to the Special Issue CO2 Sequestration, Capture and Utilization)
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16 pages, 4057 KiB  
Article
Sr1-xKxFeO3 Perovskite Catalysts with Enhanced RWGS Reactivity for CO2 Hydrogenation to Light Olefins
by Yuanhao Hou, Xinyu Wang, Ming Chen, Xiangyu Gao, Yongzhuo Liu and Qingjie Guo
Atmosphere 2022, 13(5), 760; https://doi.org/10.3390/atmos13050760 - 08 May 2022
Cited by 6 | Viewed by 2135
Abstract
The catalytic hydrogenation of CO2 to light olefins (C2–C4) is among the most practical approaches to CO2 utilization as an essential industrial feedstock. To achieve a highly dispersed active site and enhance the reactivity of the reverse [...] Read more.
The catalytic hydrogenation of CO2 to light olefins (C2–C4) is among the most practical approaches to CO2 utilization as an essential industrial feedstock. To achieve a highly dispersed active site and enhance the reactivity of the reverse water–gas shift (RWGS) reaction, ABO3-type perovskite catalysts Sr1-xKxFeO3 with favorable thermal stability and redox activity are reported in this work. The role of K-substitution in the structure–performance relationship of the catalysts was investigated. It indicated that K-substitution expedited the oxygen-releasing process of the SrFeO3 and facilitated the synchronous formation of active-phase Fe3O4 for the reverse water–gas shift (RWGS) reaction and Fe5C2 for the Fischer–Tropsch synthesis (FTS). At the optimal substitution amount, the conversion of CO2 and the selectivity of light olefins achieved 30.82% and 29.61%, respectively. Moreover, the selectivity of CO was up to 45.57% even when H2/CO2=4 due to CO2-splitting reactions over the reduced Sr2Fe2O5. In addition, the reversibility of perovskite catalysts ensured the high dispersion of the active-phase Fe3O4 and Fe5C2 in the SrCO3 phase. As the rate-determining step of the CO2 hydrogenation reaction to light olefins over Sr1-xKxFeO3 perovskite catalysts, FTS should be further tailored by partial substitution of the B site. In sum, the perovskite-derived catalyst investigated in this work provided a new idea for the rational design of a catalyst for CO2 hydrogenation to produce light olefins. Full article
(This article belongs to the Special Issue CO2 Sequestration, Capture and Utilization)
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16 pages, 7726 KiB  
Article
Amine-Modified Biochar for the Efficient Adsorption of Carbon Dioxide in Flue Gas
by Wengang Tian, Yanxia Wang, Jian Hao, Tuo Guo, Xia Wang, Xiaoju Xiang and Qingjie Guo
Atmosphere 2022, 13(4), 579; https://doi.org/10.3390/atmos13040579 - 04 Apr 2022
Cited by 8 | Viewed by 3047
Abstract
Biochar-based carbonaceous adsorbents are gaining interest due to their high availability, ease of modification, and low cost; however, they show limited adsorption of CO2 in flue gas due to common textural properties. In this study, TEPA-modified biochar was used to prepare a [...] Read more.
Biochar-based carbonaceous adsorbents are gaining interest due to their high availability, ease of modification, and low cost; however, they show limited adsorption of CO2 in flue gas due to common textural properties. In this study, TEPA-modified biochar was used to prepare a solid amine adsorbent for the efficient capture of CO2 in flue gas. First, the porous biochar was prepared with FeCl3, Mg(NO3)2, and H2O (g) as activators and walnut shells as carbon sources. Next, the biochar was modified with TEPA to obtain a solid amine adsorbent. Porous texture properties and sample surface functional groups were characterized, and we measured the adsorption CO2 of the amine-modified biochar in a breakthrough adsorption device. Results showed that biochar has a large specific surface area (744.38 m2 g−1), a total pore volume of 1.41 cm3 g−1, and a high mesoporous volume ratio (82.7%). The high pore volume provided a more efficient support space for loading tetraethylenepentamine (TEPA). The adsorbent had an excellent CO2 adsorption capacity, corresponding to 2.82 mmol g−1, which increased to 3.31 mmol g−1 and kept water resistance at 10% H2O (g) simulated flue gas (SFG). The FTIR analysis showed that H2O (g) inhibited urea production after cyclic adsorption. Therefore, solid amine adsorbent created by amine-modified biochar has potential advantages in its application for capturing CO2 in SFG. Full article
(This article belongs to the Special Issue CO2 Sequestration, Capture and Utilization)
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