Article
Energy & Fuels
Matthias Hornberger, Joseba Moreno, Max Schmid, Gunter Scheffknecht
Summary: The calcium looping process is a high temperature CO2 capture technology using limestone or a calcium containing sorbent. It has shown potential for decarbonizing cement plants by reutilizing CaO and setting new boundary conditions. Results from a pilot plant study show that the oxy-fuel calciner can achieve high regeneration efficiency with various sorbent make-up rates.
Article
Green & Sustainable Science & Technology
Edoardo De Lena, Borja Arias, Matteo C. Romano, J. Carlos Abanades
Summary: This study investigates a Calcium Looping (CaL) configuration for cement plants using two interconnected circulating fluidized bed (CFB) reactors. The proposed system combines calcination and fragmentation of limestone in a single unit, taking advantage of the limestone's tendency to attrition. The economic analysis shows that this configuration is competitive.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
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
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
Green & Sustainable Science & Technology
Andy N. Antzaras, Theodoros Papalas, Eleni Heracleous, Charalampos Kouris
Summary: This study evaluates the feasibility of integrating three alternative CO2 capture units in a cement industry in Greece, including carbonate looping and commercial amine scrubbing. The economic analysis shows that carbonate looping with limestone has lower environmental impact and similar capture cost, making it a more promising option.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Juan Pablo Rincon Duarte, Dorottya Kriechbaumer, Bruno Lachmann, Stefania Tescari, Thomas Fend, Martin Roeb, Christian Sattler
Summary: Technologies for capturing CO2 from industrial processes are crucial for addressing climate change. The CaL cycle, which can be integrated into existing cement plants and powered by renewable energy sources, has gained attention. However, material issues, such as reduced sorption capacity and particles attrition, pose challenges for the continuous cycling process. In this study, we analyzed the performance of cycled limestone under real CO2 capture conditions and identified suitable reactors for a solar CaL cycle in cement plants.
Article
Engineering, Environmental
Fardin Sattari, Maryam Tahmasebpoor, Jose Manuel Valverde, Carlos Ortiz, Mousa Mohammadpourfard
Summary: The manuscript presents a general model for a fluidized bed carbonator reactor based on bed hydrodynamics, kinetics, and sorbent properties in the Calcium Looping (CaL) process. The study identifies key operational and hydrodynamic factors affecting CO2 capture efficiency, and highlights important model parameters. The model predictions are in agreement with experimental results and may be relevant for optimizing CaL operation conditions in power plants.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Engineering, Environmental
Rui Han, Yang Wang, Shuang Xing, Caihong Pang, Yang Hao, Chunfeng Song, Qingling Liu
Summary: The calcium looping (CaL) process is a promising CO2 capture technology, but it is limited by CaO grain sintering. This review discusses the fundamental aspects of CaCO3 calcination, including its effects on performance and methods to reduce sintering.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Hesam Ostovari, Leonard Mueller, Jan Skocek, Andre Bardow
Summary: The study discusses the potential of achieving carbon neutrality in the cement industry using CO2 mineralization. By utilizing two mechanisms to reduce the carbon footprint, combining CO2 mineralization and cement production could decrease the carbon footprint by 44% to 85%.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Till Strunge, Phil Renforth, Mijndert Van der Spek
Summary: Integrated techno-economic modelling suggests that the use of CO2 mineralisation in the cement industry can be profitable and reduce CO2-equivalent emissions by up to a third. This method requires the resulting products to be used in construction and meet the eligibility for emission certificates. The transport of minerals and the composition of the products are also crucial factors.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
L. M. Marques, S. M. Mota, P. Teixeira, C. I. C. Pinheiro, H. A. Matos
Summary: The potential of CaO-based sorbents using waste and natural geological materials for CO2 capture was evaluated under different carbonation gas atmospheres. The results showed that the sorbents carbonated with real industrial flue gas exhibited better performance and stability than with synthetic gas, due to the presence of moisture in the former. The textural and mineralogical properties of spent sorbents were characterized, and the results indicated that the moisture hindered the growth of CaO crystallite size and led to an increase in surface area and total pore volume.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Engineering, Environmental
Ke Wang, Jie Chen, Tianyu Wang, Jie Hong, Pengfei Zhao, Edward J. Anthony
Summary: Capture and conversion of CO2 from optimal scenarios into fuels or chemicals provide a viable solution to combat climate change. The proposed synergistic integration of catalytic calcium-looping gasification of biochar can capture and in situ convert CO2. Experimental tests and characterizations showed that the mixture of limestone and K2CO3-impregnated biochar can enhance decarbonation kinetics and CO yield, maintaining stable CO2 conversion at lower temperatures. The process demonstrated practical scalability and cost-effectiveness, opening a unique direction for net-negative emission.
CHEMICAL ENGINEERING JOURNAL
(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)
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)
Article
Chemistry, Multidisciplinary
Kilsu Park, Taegyu Kim
Summary: Plasma-assisted calcium looping (CaL) process is proposed to enhance the CO2 capture technique by improving the reactivity of CaO carbonation. In this study, an in-situ DRIFTS reactor was used to investigate the carbonation reactivity in the presence of plasma on the CaO surface. The results showed that the plasma can change the reaction pathway and enhance the reaction of CO2 with Ca(OH)2, leading to improved reactivity of CaO carbonation.
JOURNAL OF CO2 UTILIZATION
(2022)
Correction
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Seba Alareeqi, Daniel Bahamon, Kyriaki Polychronopoulou, Lourdes F. Vega
Summary: This study explores the potential application of single-atom-alloy (SAA) catalysts in bio-oils hydrodeoxygenation refining using density functional theory (DFT) and microkinetic modeling. It establishes the relationships between stability, adsorptive properties, and activity structures for bio-oil derivatives, providing guidance for the synthesis of cost-effective SAA combinations.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Bin Hu, Wen -Ming Zhang, Xue-Wen Guo, Ji Liu, Xiao Yang, Qiang Lu
Summary: This study explored the pyrolysis behaviors and mechanisms of different monosaccharides, including arabinose, galactose, galacturonic acid, and glucuronic acid. The roles of structural differences in these monosaccharides were analyzed, and it was found that glucuronic acid undergoes a special C-C bond breaking reaction during pyrolysis. The findings provide a deep understanding of the pyrolysis chemistry of hemicellulose and the role of different branches.
FUEL PROCESSING TECHNOLOGY
(2024)
Review
Chemistry, Applied
Youwei Zhi, Donghai Xu, Guanyu Jiang, Wanpeng Yang, Zhilin Chen, Peigao Duan, Jie Zhang
Summary: Hydrothermal carbonization (HTC) is an effective method for the harmless disposal of municipal sludge (MS) and offers potential applications for the obtained products. Optimizing reaction conditions, coupling with other waste materials, and combining different processes can improve the performance of HTC. Furthermore, HTC contributes to energy recovery and enhances the quality of life cycle assessment.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Jia Wang, Jianchun Jiang, Dongxian Li, Xianzhi Meng, Arthur J. Ragauskas
Summary: This study presents a scalable process for converting holocellulose and cellulosic wastes into advanced oxygen-containing biofuels with high furan, cyclic ketone, and ethanol content. By combining hydropyrolysis and vapor-phase hydrodeoxygenation using Pd/Al2O3 as a catalyst, the researchers achieved high yields and conversions. The integrated process holds great promise for biomass waste conversion into advanced biofuels.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Florian Held, Jannis Reusch, Steffen Salenbauch, Christian Hasse
Summary: The accurate prediction and assessment of soot emissions in internal combustion engines are crucial for the development of sustainable powertrains. This study presents a detailed quadrature-based method of moments (QMOM) soot model coupled with a state-of-the-art flow solver for the simulation of gasoline engines. The model accurately describes the entire cause-and-effect chain of soot formation, growth and oxidation. Experimental validation and engine cycle simulations are used to identify the root cause of observed soot formation hotspots.
FUEL PROCESSING TECHNOLOGY
(2024)