Article
Energy & Fuels
Inaki Adanez-Rubio, Ivan Sampron, Maria Teresa Izquierdo, Alberto Abad, Pilar Gayan, Juan Adanez
Summary: This study investigates the combustion and CO2 capture efficiency of coal and biomass using a magnetic Cu-based oxygen carrier. The results show that complete combustion of the fuel to CO2 and H2O can be achieved, with CO2 capture efficiency reaching up to 97% at the appropriate temperature.
Article
Green & Sustainable Science & Technology
E. Mancusi, P. Bareschino, P. Brachi, A. Coppola, G. Ruoppolo, M. Urciuolo, F. Pepe
Summary: The proposed integrated process layout for methanol production includes a fluidized bed system for CLC and a methanol production unit. The system performance is influenced by the properties of fuel, oxygen carrier, and catalyst, and it is also considered as an energy storage system for excess energy production from renewable sources.
Article
Green & Sustainable Science & Technology
Han Sol Jung, Seung Gul Ryoo, Yong Tae Kang
Summary: This study established an analysis model using life cycle assessment data to evaluate the environmental impact of a coal power plant in Korea. The results showed that applying a CO2 capture module can effectively reduce the global warming potential. It also emphasized the importance of considering both time horizon and country characterization factor in assessing environmental impact.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Ying-jie Zhao, Yuan-yuan Duan, Qian Liu, Yang Cui, Usama Mohamed, Yu-ke Zhang, Zhi-li Ren, Yi-feng Shao, Qun Yi, Li-juan Shi, William Nimmo
Summary: The study compared the coal-based CLC power plant with other types of power plants in terms of resource consumption, energy consumption, environmental impact potential, and economic performance using a life cycle assessment method. The results showed the potential and deficiencies of the CLC power plant in a life cycle perspective.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Thermodynamics
Alberto Navajas, Teresa Mendiara, Luis M. Gandia, Alberto Abad, Francisco Garcia-Labiano, Luis F. de Diego
Summary: Power-to-methane (PtM) systems can smooth out fluctuations in renewable energy supply by storing surplus energy as methane. By combining hydrogen and carbon dioxide, these systems can produce methane through a chemical reaction. The study found that PtM systems based on CO2 from biomass have the potential to reduce global warming potential and effectively remove CO2 from the atmosphere through negative emissions.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Environmental Sciences
Li Li, Yifeng Mi, Yalin Lei, Sanmang Wu, Lu Li, Ershi Hua, Jingjing Yang
Summary: This study examines the spatial differences in the decoupling of CO2, PM2.5, and O-3 from GDP in China's cities. The results show that cities in the southeast have achieved better emissions reduction, with only a few cities achieving strong decoupling of the three pollutants from GDP.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biodiversity Conservation
Siping Ji, Weishi Zhang, Ying Xu, Yujian Wang, Wendai Lv, Bashir Ahmad, Shixiong Wang
Summary: Environmental quality is closely linked to emissions reduction outcomes, which are influenced by a variety of control policies, engineering facilities, and development patterns in most countries. In China, emissions of both CO2 and other pollutants have substantially increased over the past few decades, posing a significant risk of emissions spillovers. Efforts to address emissions reductions should integrate environmental governance and consider regional and provincial responsibilities to avoid emissions spillovers and achieve effective emission controls.
ECOLOGICAL INDICATORS
(2021)
Article
Energy & Fuels
Jaroslaw Krzywanski, Tomasz Czakiert, Anna Zylka, Wojciech Nowak, Marcin Sosnowski, Karolina Grabowska, Dorian Skrobek, Karol Sztekler, Anna Kulakowska, Waqar Muhammad Ashraf, Yunfei Gao
Summary: This paper describes the experience in modeling complex geometry in chemical looping combustion and predicts combustion emissions using artificial intelligence methods. Studying the complexity of chemical looping combustion is of practical significance for its application.
Article
Environmental Sciences
Wenxin Wang, Fan Yang, Yaqin Guo, Bin Chen, Xiaowei Zou, Sili Zhou, Jiashuo Li
Summary: China implemented the PBQSP in 2007 to alleviate air pollution from CFPPs. However, its impact on air pollutant emissions remains unclear. Our study found that the policy contributed to air pollution mitigation by reducing emission intensities of newly-built CFPPs. However, changes in coal transport routes offset the overall mitigation effect of PBQSP.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Applied
Inaki Adanez-Rubio, Amanda Nilsson, Maria Teresa Izquierdo, Teresa Mendiara, Alberto Abad, Juan Adanez
Summary: The addition of kaolin significantly improved the mechanical strength of Cu-Mn oxygen carrier and increased its lifetime to 19,000 hours, but at the cost of decreased reactivity. Optimization of the kaolin fraction in the oxygen carrier is necessary to balance these effects.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Cristian Mardones
Summary: In 2019, Chile announced a plan to shut down coal-fired power plants early, leading to cleaner production in the energy sector and electricity-intensive industries. This research uses an intersectoral model to simulate the transition from coal-fired thermoelectric generation to solar and wind energy. The results show that national production increases by USD 977 million, but employment decreases by 24 thousand jobs. Additionally, replacing coal-fired plants reduces national CO2 emissions by 37%.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Cui Quan, Hua Chu, Yingying Zhou, Sheng Su, Ruirui Su, Ningbo Gao
Summary: In this study, MCM-41 and amine-modified MCM-41 were prepared from coal gangue for CO2 capture. The effects of preparation conditions on the materials' performance were investigated. Amine modification enhanced the CO2 capture capacity of MCM-41 and showed good cyclic stability.
Article
Energy & Fuels
Inaki Adanez-Rubio, Tobias Mattisson, Marijke Jacobs, Juan Adanez
Summary: Chemical Looping with Oxygen Uncoupling (CLOU) is a technology that separates the oxygen for fuel combustion using an oxygen carrier in a fuel reactor. This study investigates the behavior of Mn/Mg/Si system as oxygen carriers for CLOU. The most reactive oxygen carriers without Si in the structure were found to be M24Mg76 and M48Mg51. These carriers showed good reactivity and mechanical stability in a batch fluidized bed reactor.
Article
Green & Sustainable Science & Technology
Jing-Li Fan, Shijie Wei, Shuo Shen, Mao Xu, Xian Zhang
Summary: To mitigate global warming, carbon capture and storage (CCS) is essential, especially for China's heavy reliance on coal-fired power plants. Assessing the CO2 storage capacity in cities can help identify suitable locations for CCS projects and effectively reduce emissions.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Thermodynamics
P. U. Akpan, W. F. Fuls
Summary: This paper discusses the application of a V-TCHR model to determine the CO2 emissions factor of coal-fired power plants at various load conditions. A demonstration study was carried out to investigate CO2 emission characteristics at part load of six hypothetical CFPPs, showing promising results. The variable emissions factor model presented in this study is useful to energy modellers as it does not require detailed plant models and can be applied to any hypothetical CFPP-based energy system.
Article
Energy & Fuels
Alberto Abad, Pilar Gayan, Francisco Garcia-Labiano, Luis F. de Diego, Maria T. Izquierdo, Teresa Mendiara, Juan Adanez
Summary: Chemical looping combustion (CLC) is an innovative technology that combines fuel combustion with CO2 capture using oxygen carriers. This study investigated the performance of CuO/Al2O3 and Fe2O3/Al2O3 particles as oxygen carriers in a CLC unit, and developed a mathematical model to simulate their behavior. The model successfully predicted the combustion performance of these materials in both a smaller-scale unit and a larger-scale unit.
GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Kagan Benzesik, Ahmet Turan, Seref Sonmez, Maria Teresa Izquierdo, Onuralp Yucel
Summary: In this study, Li4SiO4 powders were successfully synthesized by Solution Combustion Synthesis (SCS) technique, and their CO2 sorption performance was tested. The synthesized sample showed high CO2 uptake value in thermobalance test and exhibited good CO2 adsorption capability under simulated industrial off-gas conditions. Additionally, the sample demonstrated good cyclic durability during the sorption/desorption tests.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Javier Quilez-Bermejo, Sergio Garcia-Dali, Ayoub Daouli, Andrea Zitolo, Rafael L. S. Canevesi, Melanie Emo, Maria T. Izquierdo, Michael Badawi, Alain Celzard, Vanessa Fierro
Summary: In this study, single atoms and nanoclusters of Fe, Ni, Co, Cu, and Mn were embedded in a well-defined C1N1-type material with internal cavities of approximately 0.6 nm. The nucleation of different metal nanoclusters was achieved by forming metal-nitrogen bonds on four N atoms. After pyrolysis, TM@CNx-type structures were obtained, where TM represents the transition metal and x<1. Fe@CNx and Co@CNx showed promising performance in oxygen reduction reaction and hydrogen evolution reaction respectively, with a Pt-like performance, while Ni@CNx exhibited the highest activity in oxygen evolution reaction (OER) with an E-OER of 1.59 V versus RHE, surpassing the commercial IrO2 (E-OER = 1.72 V). This systematic and benchmarking study provides a basis for the future design of advanced multi-functional electrocatalysts by modulating and combining the metallic nature of nanoclusters and single atoms.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
Inaki Adanez-Rubio, Tobias Mattisson, Marijke Jacobs, Juan Adanez
Summary: Chemical Looping with Oxygen Uncoupling (CLOU) is a technology that separates the oxygen for fuel combustion using an oxygen carrier in a fuel reactor. This study investigates the behavior of Mn/Mg/Si system as oxygen carriers for CLOU. The most reactive oxygen carriers without Si in the structure were found to be M24Mg76 and M48Mg51. These carriers showed good reactivity and mechanical stability in a batch fluidized bed reactor.
Article
Chemistry, Applied
Amirhossein Filsouf, Inaki Adanez-Rubio, Teresa Mendiara, Alberto Abad, Juan Adanez
Summary: Chemical looping with oxygen uncoupling (CLOU) process utilizes two interconnected fluidized bed reactors, where Cu-based oxygen carriers containing a kaolin-reinforced MnFe mixed oxide as a magnetic support were prepared to improve their properties. The effects of kaolin concentration and calcination temperature on the carriers' magnetic permeability, crushing strength, attrition, agglomeration resistance, and reactivity were studied. Two oxygen carriers containing 28.5 wt% CuO-5 wt% kaolin and 30 wt% CuO-7.5 wt% kaolin, respectively, both calcined at 1100 degrees C, showed improved mechanical resistance and maintained their magnetic properties and reactivity.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Sergio Garcia-Dali, Javier Quilez-Bermejo, Raj Karthik, Rafael Luan Sehn Canevesi, Maria T. Izquierdo, Melanie Emo, Alain Celzard, Vanessa Fierro
Summary: The sluggish kinetics of the oxygen evolution reaction (OER) is a major limitation for green electrochemical devices. Expensive ruthenium and iridium oxide electrodes have been used as advanced electrocatalysts, but their rarity limits their global implementation. Transition metal and boron compounds show promise as alternatives due to their high catalytic properties and stability. However, their synthesis routes often involve expensive supports, increasing the cost. This study presents an easy and support-free synthesis of bimetallic borates, showing improved electrocatalytic properties for OER, particularly with nickel as the transition metal. A support-free synthesis route achieved an overpotential of 230 mV, comparable to commercial and state-of-the-art electrocatalysts.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Arturo Cabello, Teresa Mendiara, M. Teresa Izquierdo, Francisco Garcia-Labiano, Alberto Abad
Summary: This study investigated the use of a low-cost Fe-based residue as an oxygen carrier in the Chemical Looping Combustion (CLC) and Chemical Looping Reforming (CLR) processes with biogas. The results showed that the methane combustion efficiency in the CLC process was higher (around 86%) compared to other low-cost Fe-based materials. The dry reforming of biogas in the CLR process achieved about 55% methane conversion and a yield of 1.3 mol (CO + H2)/mol CH4 for syngas production.
Article
Energy & Fuels
Margarita de las Obras Loscertales, Alberto Abad, Francisco Garcia-Labiano, Juan A. C. Ruiz, Juan Adanez
Summary: The use of bio-ethanol in chemical looping combustion and reforming has the potential to produce energy and/or hydrogen, as well as remove CO2 from the atmosphere. This study examines the kinetics of ethanol conversion using a NiO-based material as the oxygen carrier. Experiment results suggest that ethanol decomposition products, rather than direct reduction with ethanol, are responsible for NiO reduction. The high temperature kinetics of ethanol conversion processes were determined, and a reaction pathway was proposed for detailed fuel reactor models.
Article
Energy & Fuels
Oscar Condori, Alberto Abad, Maria T. Izquierdo, Luis F. de Diego, Francisco Garcia-Labiano, Juan Adanez
Summary: In this study, the Biomass Chemical Looping Gasification (BCLG) process was evaluated using wheat straw pellets and ilmenite as the fuel feedstock and oxygen carrier respectively. The effect of different operational variables on process performance and syngas yield was analyzed, and no agglomeration issues were observed during the smooth operation of the CLG unit. The oxygen transference rate in the fuel reactor was found to be the main factor affecting syngas yield and cold gas efficiency.
Article
Engineering, Chemical
Inaki Adanez-Rubio, Amirhossein Filsouf, Merve Durmaz, Teresa Mendiara, Pilar Gayan, Juan Adanez
Summary: This study focuses on testing a Cu-based oxygen carrier with enhanced mechanical properties due to the addition of kaolin in the combustion of different biomass types in a continuous CLOU unit. Complete combustion of the biomass types was achieved and higher CO2 capture efficiencies were observed at 800-950 degrees C compared to without kaolin doping. The oxygen carrier retained its magnetic properties without any agglomeration problems after 80 hours of hot circulation operation.
