Article
Thermodynamics
Sanoop Kumar Puthiya Veetil, Kaarel Rebane, Can Rustu Yoruk, Margus Lopp, Andres Trikkel, Michael Hitch
Summary: The study evaluated the development of a Ca-based CO2 capture sorbent from a limestone-rich mine waste via aqueous mineral carbonation. It was found that optimal dissolution and carbonation of calcium occurred at 2.5% pulp density, resulting in the production of pure calcite during the process. The promising CO2 uptake capacity of the developed sorbent suggests its potential for direct CO2 capture.
Article
Engineering, Environmental
Eyad Smadi, Mehdi Jafarian, Bassam Dally, Graham J. Nathan
Summary: A process for carbon capture from limestone calcination in a steam atmosphere generated by hydrogen and oxygen combustion has been developed. This process allows for carbon dioxide capture by condensing steam from exhaust gases, eliminating the energy-intensive step of carbon dioxide separation. A techno-economic analysis shows that cost parity can be achieved once the price of hydrogen reaches a certain range.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Francisco M. Baena-Moreno, Daofeng Mei, Henrik Leion, David Pallares
Summary: The calcium looping technology is a promising method for CO2 capture and storage. Previous studies have focused on evaluating this technology using combustion flue gas, while little is known about its performance when capturing CO2 from biogas or gases resulting from hydrothermal carbonization. This experimental study assesses the performance of calcium looping for biogas and finds improved CO2-capture performance compared to combustion flue gas.
BIOMASS & BIOENERGY
(2023)
Review
Energy & Fuels
Haiquan An, Zhen Liu, Xinhui Fang, Ziyang Feng, Xuelei Duan
Summary: This study investigated the CO2 gasification kinetics of direct coal liquefaction residue (ER), showing higher reactivity of ER char compared to coal char and an increase in reactivity with higher ER content in blends. The partial pressure of CO2 promoted the reactivity of all samples, and ER char exhibited larger BET surface area and pore volume compared to coal char. Activation energy and reaction order parameters for ER char, coal char, and their blend were also determined.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Construction & Building Technology
Seung-Jun Kwon, Xiao-Yong Wang
Summary: This study proposed models for evaluating the CO2 uptake rate of plain concrete and limestone-powder-blended concrete in both the service and recycling phases. Analysis results showed the impact of limestone replacement rate, surface area to volume ratio of structural units, water/binder ratio, and amount of recycled concrete on CO2 uptake rate. The study clarified differences in carbonation equations between the service stage and recycling stage, and determined the effects of concrete mixtures, structural element sizes and types, life cycle stages, and recycled concrete sizes on CO2 uptake.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Engineering, Environmental
Xin Liu, Pan Feng, Yuxi Cai, Xiaohan Yu, Cheng Yu, Qianping Ran
Summary: In this study, the carbonation kinetics of calcium silicate hydrate (C-S-H) with varying calcium to silica ratio (Ca/Si) were investigated. The results showed three distinct periods in the carbonation process and quantitatively characterized the evolution of carbonation products. The findings not only enhance our understanding of the deterioration of cementitious materials under carbonation, but also provide new insights into CO2 capture using C-S-H.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Y. K. Kong, Y. Song, K. Kurumisawa, T. Wang, D. Yan, Q. Zeng, X. Zhou, S. Ruan
Summary: The study investigated the feasibility of using hydrated cement paste (HCP) as a CO2 sponge by carbonating, calcining, and re-carbonating the HCP. Through microstructural analysis, the study examined the capacity of CO2 sequestration and release via HCP, as well as the carbonation phases formed within the cement paste. Initial results showed that HCP could effectively sequester CO2 and release it during the re-carbonation process, with moisture playing a significant role in the efficiency of the process.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Biochemistry & Molecular Biology
Qiwei Jiang, Meng Guo
Summary: This study examined the effect of calcination temperatures on the network structures of organosilica membranes. The results showed that different calcination temperatures resulted in variations in membrane structure, pore size, and permeance. Membranes fabricated at 500 degrees C had high permeance but low selectivity, while membranes calcined at 100 degrees C exhibited satisfactory performance in both permeance and selectivity.
Article
Chemistry, Physical
Dan Li, Yang Wang, Zhenshan Li
Summary: We developed a new method for measuring the calcination kinetics of limestone by injecting limestone particles into hot fluidizing sands. We investigated the calcination characteristics of limestone under different conditions and analyzed the experimental data using a detailed model. The results showed that the calcination kinetics measured by this new method were faster.
Article
Energy & Fuels
Dazhan Jiang, Yaru Wang, Zetong Li, Shuaipeng Li, Li Zhang, Luhan Chen, Zhiguo Sun
Summary: Fulvic acid (FA) was used to modify CaO for improved CO2 capture. Under optimal conditions, the carbonation conversion rate (CCR) of FA/CaO was 31% higher than that of original CaO. The addition of FA improved the microstructure of CaO, increasing its specific surface area and pore size, and enhancing CO2 capture performance.
GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Arian Ebneyamini, Zezhong John Li, Jun Young Kim, John R. Grace, C. Jim Lim, Naoko Ellis
Summary: This study found that increasing calcination temperature reduces the reactivity of solid sorbents, while incomplete calcination of limestone significantly alters its CO2 absorption capacity. The semi-empirical method proposed by the authors accurately estimates the fast reaction-controlled carbonation extent of different natural limestones under varying calcination conditions.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Engineering, Environmental
Athanasios Scaltsoyiannes, Andy Antzaras, Georgios Koilaridis, Angeliki Lemonidou
Summary: Calcium looping is an attractive technology for post-combustion CO2 capture, hydrogen production, and energy storage applications. The carbonation reaction is a first-order process with respect to CO2 in the gas phase, and the developed kinetic model can predict the carbonation rate of CaO-based materials regardless of the type and percentage of the contained inert phase.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
S. Zare Ghorbaei, H. Ale Ebrahim
Summary: The kinetics of the carbonation reaction of strontium oxide was investigated using the random pore model, which has applications in carbon capture and storage (CCS) and thermochemical energy storage (TCES). Experimental data ranging from 800°C to 950°C in temperature and 5% to 40% in CO2 concentration were used to determine the kinetic parameters and reaction rate equation. The concentration dependency of the reaction rate was well described by a fractional function, and the activation energy of the reaction was calculated to be approximately 64 kJ/mol. Comparisons with similar studies on MgO, CaO, and SrO-based sorbents highlighted the importance of this reaction for CCS and TCES applications.
Article
Energy & Fuels
F. Dashtestani, M. Nusheh, V. Siriwongrungson, J. Hongrapipat, V. Materic, S. Pang
Summary: This study investigated the impact of contaminants in biomass gasification producer gas on the CO2 capture performance of a CaO and Fe2O3 based sorbent material. Experimental results showed effective CO2 capture in the initial stages and a catalytic effect of the sorbent material in removing contaminants from the gas.
Article
Engineering, Environmental
Yongqing Xu, Cong Luo, Huiying Sang, Bowen Lu, Fan Wu, Xiaoshan Li, Liqi Zhang
Summary: The study prepared NaCl-modified CaO-based sorbents through simultaneous hydration and impregnation, and investigated their cyclic CO2 capture capacity. The results showed that NaCl could tailor the temperature sensitivity of the sorbents and enhance their carbonation activity, particularly at higher temperatures.
CHEMICAL ENGINEERING JOURNAL
(2022)
