Article
Engineering, Environmental
Bao-Qi Feng, Han-Qing Chen, Chao Ping, Xiang Huang, Wen-Long Liu, Bao-Xia Dong, Yun-Lei Teng
Summary: The study shows that inert additive-doped CaO-based CO2 adsorbents can be synthesized in one pot by the mechanochemical method, producing methane instead of CO2 emission. The prepared CaO@C and CaO@MgO@C composites exhibit high CO2 adsorption capacity and superior cycling stability, with much lower activity losses after 30 cycles compared to conventional adsorbents. This work provides a novel, simple, solution-free, and sustainable strategy for synthesizing effective CaO-based CO2 adsorbents.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Mahboubeh Nabavinia, Baishali Kanjilal, Noahiro Fujinuma, Amos Mugweru, Iman Noshadi
Summary: Recent research efforts have shown opportunities for capturing and electrochemically converting CO2, with mesoporous metal-doped polymers demonstrating promising CO2 capture performance. The ease of synthesis and high CO2 capture capacity make these materials potential candidates for CO2 capture and possible subsequent electrochemical conversion.
Article
Chemistry, Physical
Alice M. Bumstead, Ignas Pakamore, Kieran D. Richards, Michael F. Thorne, Sophia S. Boyadjieva, Celia Castillo-Blas, Lauren N. McHugh, Adam F. Sapnik, Dean S. Keeble, David A. Keen, Rachel C. Evans, Ross S. Forgan, Thomas D. Bennett
Summary: Melt-quenched metal-organic framework (MOF) glasses have been developed, and the surface properties of these glasses can be tuned by post-synthetic modification (PSM).
CHEMISTRY OF MATERIALS
(2022)
Article
Engineering, Environmental
Lifeng Li, Alireza Rahbari, Mahdiar Taheri, Roelof Pottas, Bo Wang, Morteza Hangi, Leanne Matthews, Lindsey Yue, Jose Zapata, Peter Kreider, Alicia Bayon, Chi-Hwa Wang, Terrence W. Simon, Joe Coventry, Wojciech Lipinski
Summary: The two-step calcium oxide based calcination-carbonation cycle is studied for carbon dioxide capture and solar thermochemical energy storage applications. The performance of an indirectly-irradiated packed-bed solar thermochemical reactor is evaluated experimentally using simulated high-flux solar irradiation. The reactor temperature peaked at 1,035 degrees C and the average solar-to-chemical conversion efficiency ranged from approximately 1.3% to 8.6% for the experimental runs. Improvements in thermomechanical characteristics, reaction chamber seals, and reactor geometry are necessary for the presented reactor design.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Thermodynamics
Avishek Goel, Elyas M. Moghaddam, Wen Liu, Chao He, Jukka Konttinen
Summary: Biomass chemical looping gasification (BCLG) offers significant advantages in terms of gasification efficiency, CO2 capture, and reduced emissions, but further experimental and modeling studies are needed to advance its industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Daniele Ferrario, Stefano Stendardo, Vittorio Verda, Andrea Lanzini
Summary: The cement industry is responsible for 6-7% of global anthropogenic CO2 emissions and needs to be decarbonized to meet international greenhouse gas emission goals. This study explores the feasibility of using a solar-driven calcium looping (CaL) process for carbon capture in a cement plant. Through detailed process modeling and energy analysis, the performance of the system is evaluated. It is estimated that implementing solar-driven CaL technology in a cement plant could reduce CO2 emissions by over 90%.
JOURNAL OF CLEANER PRODUCTION
(2023)
Review
Chemistry, Multidisciplinary
Nhut Minh Nguyen, Falah Alobaid, Paul Dieringer, Bernd Epple
Summary: Biomass gasification is a promising renewable energy source that can replace fossil fuels, but faces challenges such as tar formation and low efficiency. Chemical looping gasification is considered a suitable pathway for producing valuable products from biomass. The review paper provides insights into the recent developments of biomass-based chemical looping gasification process.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Chemical
Robert T. Symonds, Dennis Y. Lu, Arturo Macchi, Robin W. Hughes, Edward J. Anthony
Summary: Calcium looping is a feasible CO2 capture technology, but chlorine in fuels can impact the performance of calcium-based sorbents. Experimental results showed that the presence of HCl can increase sorbent reactivity towards CO2 and decrease CO2 diffusional resistance by changing particle morphology during carbonation using Canadian limestone. Additionally, full sorbent dechlorination can be achieved under typical oxy-fuel calcination conditions, with over 99% HCl capture without affecting sorbent CO2 capture performance when steam is present during both carbonation and calcination.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Sebastian Anila, Cherumuttathu H. Suresh
Summary: This study demonstrates that under the influence of multiple molecules of guanidine and CO2, the non-covalent GMIDLINE HORIZONTAL ELLIPSISCO2 complex can transform into a strongly interacting G-CO2 covalent complex. Density functional theory analysis reveals a strong N-CO2 covalent interaction in (G-CO2)(n) clusters, with the N-C distance decreasing as the number of CO2 molecules in the cluster increases.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Jinyu Wang, Bo Wang, Zulong Wen, Ning Zhao, Tan Li, Wenbo Zhao
Summary: Adsorption separation is a commonly used gas purification method, with pressure swing adsorption (PSA) and temperature swing adsorption (TSA) being the most widely used techniques. Mathematical analysis of the Langmuir isotherm model helps in determining the optimal cyclic adsorption conditions, thermodynamic parameters, and adsorption capacity. This study also develops a predictive isotherm model to calculate the optimal adsorption/desorption temperatures and cyclic adsorption capacity for different adsorbents.
Article
Thermodynamics
Marco Astolfi, Edoardo De Lena, Francesco Casella, Matteo Carmelo Romano
Summary: The study focuses on the potential application of calcium looping CO2 capture system in coal-fired power plants, comparing two different CaL systems and analyzing the role and economic benefits of sorbent storage systems. It is found that the secondary storage system can provide more flexible grid services and reduce the capital cost of CaL systems.
APPLIED THERMAL ENGINEERING
(2021)
Article
Environmental Sciences
Shu-Ling Hsieh, Fang-Yu Li, Pei-Ying Lin, David E. Beck, Rajendranath Kirankumar, Gan-Jie Wang, Shuchen Hsieh
Summary: This study synthesized CaO adsorbents with good CO2 adsorption capacity using eggshell waste, achieving 0.6 gCO2/g-sorbent. CaO modified with a dopamine-containing polymer showed an adsorption capacity of 0.62 gCO2/g-sorbent, maintaining excellent performance even after 10 cycles of adsorption. The use of eggshell waste to synthesize CaO-based adsorbents for effective CO2 adsorption not only reduces environmental waste, but also has the potential to capture greenhouse gas CO2 emissions, aligning with the principles of green chemistry.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Seyed Borhan Mousavi, Mohammad Heidari, Farhad Rahmani, Rojiar Akbari Sene, Peter T. Clough, Serap Ozmen
Summary: This study assessed the textural and structural characterizations and CO2 capture activity of ZrO2-stabilized adsorbents templated with MWCNT. The results showed that adding 10 wt% MWCNT significantly improved the grain size, surface area, and pore volume of CaO. The incorporation of MWCNT also increased cyclic durability and CO2 capture capacity.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Dawid P. Hanak
Summary: This study demonstrated that the uncertainty in the sorbent characteristics would influence the techno-economic viability of the CaL retrofits. It showed that the cost of CO2 avoided fell between 29.74 and 46.50 euro/tCO(2), with a median of 35.94 euro/tCO(2). Such a figure was higher than that obtained in the deterministic assessment (32.40 euro/tCO(2)). The outcome of this study implies that the economic assessment using the deterministic approach could underestimate the costs associated with the CaL retrofits.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Claudio Carbone, Daniele Ferrario, Andrea Lanzini, Vittorio Verda, Alessandro Agostini, Stefano Stendardo
Summary: The study investigates the potential of the Carbon Looping process (CaL) to mitigate greenhouse gas (GHG) emissions in the steelmaking industry. The results show that the direct reduction process and electric arc furnace (DR-EAF) have lower GHG emissions compared to the blast furnace and basic oxygen furnace (BF-BOF). The adoption of CaL technology in BF-BOF can reduce GHG emissions by up to 66%. The study also highlights the importance of the circularity of CaL technology to reduce and reuse spent materials for CO2 sequestration.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
