Article
Green & Sustainable Science & Technology
Francesco Magli, Maurizio Spinelli, Martina Fantini, Matteo Carmelo Romano, Manuele Gatti
Summary: This paper evaluates the technical and economic performance of the CO2 Purification Unit (CPU) for cement plants equipped with oxyfuel-based CO2 capture. Two different outlet CO2 specifications are designed, modelled, and optimized to minimize the incremental clinker production cost. The results show that the air infiltration rate has a significant impact on the cost increase and optimal operational conditions.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Green & Sustainable Science & Technology
Artjom Saia, Dmitri Neshumayev, Aaro Hazak, Priit Sander, Oliver Jarvik, Alar Konist
Summary: This study conducts a comparative techno-economic analysis of adding CO2 capture technologies to existing oil shale power plants in Estonia. The results show that oxy-fuel combustion capture performs better than post-combustion capture, but it leads to a reduction in power plant efficiency. The feasibility of CO2 capture in Estonian oil shale power plants depends on long-term trends in the electricity market and CO2 emissions trading system, and it may require state aid, which could reduce the overall competitiveness of the Estonian economy.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Jie Wang, K. A. Al-attab, Teoh Yew Heng
Summary: A new system combining biomass gasification and solid oxide fuel cell in a combined heat and power manner was evaluated. The system aims to efficiently utilize biomass and utilize CO2 from the system exhaust through solar-assisted solid oxide electrolyzer cell methanation. The system achieved high energy and exergy efficiencies and has low CO2 emissions.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
Shuai Ma, Changqing Dong, Xiaoying Hu, Junjie Xue, Ying Zhao, Xiaoqiang Wang
Summary: This study proposes a novel biomass gasification-syngas fermentation-solid oxide fuel cell system for bioethanol production, which is proven to be efficient and cost-competitive through techno-economic assessment and multi-objective optimization.
Article
Chemistry, Physical
Monica P. S. Santos, Dawid P. Hanak
Summary: This study evaluated the feasibility of sorption enhanced gasification as a waste-to-fuel and carbon capture and storage technology. The results showed that it can enhance hydrogen production efficiency but may have lower total efficiency and higher hydrogen cost compared to conventional gasification methods.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Samiran Samanta, Dibyendu Roy, Sumit Roy, Andrew Smallbone, Anthony Paul Roskilly
Summary: An advanced integrated multigeneration energy hub is proposed, which consists of SOFC, MCFC, PEM electrolyser, and methanol production unit. This system can generate electricity, heat, methanol, and oxygen using natural gas and renewable electricity. The thermodynamic analysis shows an energy efficiency of 86.03% and exergy efficiency of 59.13%. The economic analysis reveals a levelized cost of energy (LCOE) of 0.06 pound/kWh (without battery storage) and 0.065 pound/kWh (with battery storage), with a simple payback period of 2.16 years and 2.75 years, respectively. Case studies comparing alternative options also demonstrate the superiority of this system in terms of efficiency and cost.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Energy & Fuels
Tianqi Gao, Baokai Xia, Kang Yang, Di Li, Tianye Shao, Sheng Chen, Qiang Li, Jingjing Duan
Summary: Currently, CO2 electrolysis technologies are being extensively studied in laboratories, with limited pilot-scale applications. In this study, a comprehensive workflow of the CO2 electrolysis system is established, and a techno-economic analysis (TEA) is conducted on four main products: formic acid, carbon monoxide, ethanol, and ethylene. The levelized cost of formic acid and carbon monoxide is competitive with conventional methods, but ethanol and ethylene are not yet economically viable. To improve the feasibility of multicarbon products, higher faradaic efficiency, lower cell voltage, and reduced electricity prices are needed. Additionally, the production process of formic acid is optimized using heat-pump-assisted pressure swing distillation (HPA-PSD) to reduce energy consumption. Furthermore, the production of formic acid from CO2 electrolysis coupled with concentrating solar power can achieve a carbon-negative effect based on carbon footprint accounting.
Article
Engineering, Environmental
D. Hospital-Benito, J. Lemus, C. Moya, R. Santiago, V. R. Ferro, J. Palomar
Summary: An economic assessment of CO2 chemical capture processes using Ionic Liquids (ILs) was conducted, with [P-2228] [CNPyr] identified as the most cost-effective solvent. Operating at vacuum pressure for IL regeneration was found to incur significant costs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Javad Asadi, Pejman Kazempoor
Summary: This study conducted a comprehensive evaluation of membrane separation processes for carbon capture systems, revealing that considering sweep gas and increasing CO2 concentration can reduce energy consumption.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Haider Sultan, Umair Hassan Bhatti, Hafiz Ali Muhammad, Sung Chan Nam, Il Hyun Baek
Summary: Postcombustion CO2 separation using aqueous amine solution has the potential to minimize CO2 emissions but is expensive due to huge energy requirement for solvent regeneration. Structural modifications can be implemented to minimize regeneration energy requirement and optimize energy efficiency. The LVCSOE configuration is the optimal choice for reducing energy requirement for solvent regeneration and CO2 capture cost.
GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Yuhang Yang, Tao Du, Yingnan Li, Qiang Yue, Heming Wang, Liying Liu, Shuai Che, Yisong Wang
Summary: In order to mitigate global warming and climate change, the steel industry needs to urgently reduce CO2 emissions. This study evaluates the application value and feasibility of the MEA-CO2 capture process in the iron and steel industry through techno-economic assessment and exergy analysis. Four scenarios are designed, considering heat integration and capture scale. The process achieves a gas capture rate of 90% and a CO2 product purity of 98.3%. The maximum annual CO2 emission reduction is about 7.65 million tons. The study also provides insights on cost reduction and process improvement.
JOURNAL OF CLEANER PRODUCTION
(2023)
Review
Multidisciplinary Sciences
Ana Somoza-Tornos, Omar J. Guerra, Allison M. Crow, Wilson A. Smith, Bri-Mathias Hodge
Summary: The electrochemical reduction of CO2 is seen as a promising alternative to traditional fossil fuel technologies for chemical synthesis, but the low technology readiness levels make it difficult to predict performance at an industrial scale. Researchers have developed various techniques to assess these technologies, focusing on technical, environmental, and economic aspects, in order to evaluate the challenges and opportunities for industrial implementation of CO2 reduction through electrolysis.
Article
Chemistry, Physical
Narjes Rezaei, Vahid Mohebbi, Vafa Feyzi Ahvaz
Summary: In this study, a hybrid process combining hydrate based separation, membrane separation, and amine-absorption separation technologies was designed for CO2/H-2 mixture separation. The results showed that the combination of hydrate formation separation technique with membrane separation technology resulted in a CO2 capture process with the lowest energy consumption and total cost per unit weight of captured CO2. The best scheme for hybrid hydrate CO2 capture process was the hybrid hydrate-membrane process in the presence of TBAB as hydrate promoter, with a total cost of 29.47 US$/ton CO2.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Harriet Kildahl, Li Wang, Lige Tong, Hui Cao, Yulong Ding
Summary: This study demonstrates the efficient conversion of CO2 to CO by BCNF1 at a lower oxidation temperature due to its lower activation energy, with economic evaluation suggesting profitability despite high sensitivity to electricity prices.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Multidisciplinary
Hayoung Yoon, Taeksang Yoon, Ha-Jun Yoon, Chul-Jin Lee, Sungho Yoon
Summary: This study explores a process for the efficient and selective production of Ca(HCO2)(2), which can not only reduce production costs but also potentially decrease the global warming index.
Review
Green & Sustainable Science & Technology
Hanna Fekete, Takeshi Kuramochi, Mark Roelfsema, Michel den Elzen, Nicklas Forsell, Niklas Hoehne, Lisa Luna, Frederic Hans, Sebastian Sterl, Jos Olivier, Heleen van Soest, Stefan Frank, Mykola Gusti
Summary: This article reviews climate change mitigation policies in China, the European Union, India, Japan, and the United States, focusing on their historical performance and target goals in various sectors. While most countries have successful policies in renewable energy, fuel efficiency, electrification of passenger vehicles, and forestry, there are still areas with limited information or comprehensive policies, such as buildings and agriculture. The study suggests that transformative policies are needed to achieve global emissions reductions in line with the goals of the Paris Agreement.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Review
Green & Sustainable Science & Technology
R. Martinez-Gordon, G. Morales-Espana, J. Sijm, A. P. C. Faaij
Summary: The importance of spatial resolution in energy modeling has been growing, and this paper provides a comprehensive review of the topic, including applications of GIS, analysis of energy modeling tools, and practices for incorporating spatial resolution in energy models.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Multidisciplinary Sciences
Laura Florentina Gusatu, Stefano Menegon, Daniel Depellegrin, Christian Zuidema, Andre Faaij, Claudia Yamu
Summary: The study proposes a comprehensive assessment methodology for understanding the potential impacts of OWF projects on the marine ecosystem in the North Sea basin. Results indicate 2022 as the peak year for cumulative impacts of approved OWFs, with a significant increase in potential impacts from planned 212GWs by 2050. The research highlights the varying degrees of impact in concentrated areas (such as SE UK) and dispersed areas (Germany) over time.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Takeshi Kuramochi, Leonardo Nascimento, Mia Moisio, Michel den Elzen, Nicklas Forsell, Heleen van Soest, Paola Tanguy, Sofia Gonzales, Frederic Hans, M. Louise Jeffery, Hanna Fekete, Tessa Schiefer, Maria Jose de Villafranca Casas, Gustavo De Vivero-Serrano, Ioannis Dafnomilis, Mark Roelfsema, Niklas Hoehne
Summary: This study compares greenhouse gas emissions projections for nine key non-G20 countries in 2030, finding that some countries may meet or exceed their targets, while others will need to strengthen their actions to achieve their goals.
ENVIRONMENTAL SCIENCE & POLICY
(2021)
Article
Environmental Studies
Leonardo Nascimento, Takeshi Kuramochi, Gabriela Iacobuta, Michel den Elzen, Hanna Fekete, Marie Weishaupt, Heleen Laura van Soest, Mark Roelfsema, Gustavo De Vivero-Serrano, Swithin Lui, Frederic Hans, Maria Jose de Villafranca Casas, Niklas Hoehne
Summary: Despite an increase in the number and coverage of climate change mitigation policies over the past twenty years, significant policy adoption gaps exist, with half of key policy options not widely adopted. Adoption is particularly low for policies targeting coal and oil phase-outs, energy reductions, industrial emissions reductions, urban planning for retrofits, and renewable energy use in buildings. Policy gaps leave at least one-tenth of G20 emissions uncovered, highlighting the need to improve policy adoption to achieve global net zero greenhouse gas emissions.
Article
Green & Sustainable Science & Technology
Alexander Damkaer Hansen, Takeshi Kuramochi, Birka Wicke
Summary: This study assessed the status and quality of corporate emissions reporting and target setting in the global food system. The findings indicate that there are significant gaps and inconsistencies in emissions reporting, particularly for Scope 3 emissions. The food and beverages industry urgently needs to improve its GHG emissions reporting and management in order to mitigate its impact on climate change.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Michel G. J. den Elzen, Ioannis Dafnomilis, Nicklas Forsell, Panagiotis Fragkos, Kostas Fragkiadakis, Niklas Hohne, Takeshi Kuramochi, Leonardo Nascimento, Mark Roelfsema, Heleen van Soest, Frank Sperling
Summary: This study analyzes the greenhouse gas emissions and macroeconomic impacts of the new NDCs submitted by 156 countries. The results show that while these new NDCs contribute to additional reductions in global emissions by 2030, achieving the climate goals of the Paris Agreement still requires a significant increase in emission reductions.
MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE
(2022)
Article
Environmental Sciences
Leonardo Nascimento, Takeshi Kuramochi, Niklas Hoehne
Summary: This article compares the greenhouse gas emission projections for 2021 to 2030 with those from 2015, finding that the G20's projections for 2030 are almost 15% lower than projected in 2015. This decrease is primarily due to the adoption of new policies, updated expectations on technology and economic growth, as well as the short-term effects of the COVID-19 pandemic. However, despite the improvements, the collective emissions of the G20 are still projected to slightly increase until 2030, falling short of the temperature goals set by the Paris Agreement.
MITIGATION AND ADAPTATION STRATEGIES FOR GLOBAL CHANGE
(2022)
Article
Energy & Fuels
Ahmed Younis, Rene Benders, Jezabel Ramirez, Merlijn de Wolf, Andre Faaij
Summary: The study proposes a combined approach to address the challenges in integrating variable renewable energy sources into the energy system. It enhances the temporal resolution of an energy model and simulates the projected electricity mix using a power model. The results show that combining both methods leads to more accurate assessment of renewable energy penetration and highlights the additional investments and costs required for reliable power system operation.
Article
Energy & Fuels
Andre P. C. Faaij
Summary: Biomass use for energy and materials is a key mitigation option to reach the 1.5 degrees C global temperature target set in the Paris Agreement. However, negative connotations have emerged in certain parts of the EU, particularly regarding displacement effects in markets and land use. Despite this, strong evidence supports the use of sustainable biomass, and there are insights on how to avoid displacement issues. By utilizing better agricultural methods, restoring marginal and degraded lands, and adapting to climate change, biomass can contribute significantly to the future energy and material supply, with potential benefits for overall mitigation and the removal of CO2 from the atmosphere. It is recommended that future policies prioritize the synergy between biomass, energy transition, climate adaptation, agriculture, and land use, as this offers an opportunity to contribute to the European Green Deal and improve energy security.
Article
Environmental Sciences
Mark Roelfsema, Heleen L. van Soest, Michel den Elzen, Heleen de Coninck, Takeshi Kuramochi, Mathijs Harmsen, Ioannis Dafnomilis, Niklas Hohne, Detlef P. van Vuuren
Summary: The framework presented in this study aims to provide transparency and understanding of climate policy in integrated assessment models. It categorizes policy aims and implementation at different stages, and can be used to link international and national-level climate policy scenarios. The framework's application is demonstrated in the IMAGE model.
ENVIRONMENTAL SCIENCE & POLICY
(2022)
Article
Green & Sustainable Science & Technology
Kathelijne Bouw, Carina J. J. Wiekens, Casper Tigchelaar, Andre Faaij
Summary: Participatory energy planning at the local level can increase citizen engagement, establish legitimacy and trust, and promote successful implementation of renewable energies. This research contributes to the current literature by providing concrete examples and verified approaches to clarify the guiding principles of participatory energy planning and address the opportunities and challenges involved. The paper presents a process design that includes multiple tools for collecting social input, such as surveys, questionnaires, and workshops, to facilitate participatory technology choices. The design is applied and tested in a case study of a Dutch neighborhood, and the lessons learned serve as a basis for further research.
Article
Public Administration
Leonardo Nascimento, Michel den Elzen, Takeshi Kuramochi, Santiago Woollands, Ioannis Dafnomilis, Mia Moisio, Mark Roelfsema, Nicklas Forsell, Zuelclady Araujo Gutierrez
Summary: The study found that some countries submitted more ambitious, updated NDCs without implementing sufficient policies to meet their original targets. In most countries, updated NDCs led to higher emissions than current policies. These patterns are influenced by national constraints and reliance on fossil fuels.
JOURNAL OF COMPARATIVE POLICY ANALYSIS
(2023)
Article
Environmental Studies
Thomas N. Hale, Sander Chan, Angel Hsu, Andrew Clapper, Cynthia Elliott, Pedro Faria, Takeshi Kuramochi, Shannon McDaniel, Milimer Morgado, Mark Roelfsema, Mayra Santaella, Neelam Singh, Ian Tout, Chris Weber, Amy Weinfurter, Oscar Widerberg
Summary: This article introduces a conceptual framework for assessing the progress, implementation, and impact of climate action by sub- and non-state actors. While researchers have made important advances in understanding the scale, scope, and potential of such climate action, there are knowledge gaps around results achieved, indirect impacts, and actions beyond greenhouse gas reductions.
Article
Environmental Studies
Swithin Lui, Takeshi Kuramochi, Sybrig Smit, Mark Roelfsema, Angel Hsu, Amy Weinfurter, Sander Chan, Thomas Hale, Hanna Fekete, Katharina Luetkehermoeller, Maria Jose de Villafranca Casas, Leonardo Nascimento, Sebastian Sterl, Niklas Hoehne
Summary: This article quantifies the potential greenhouse gas emission reductions in 2030 from major international cooperative initiatives, showing that if these initiatives meet their goals, they could contribute significantly to global efforts to stay within a below 2 degrees C-consistent emission pathway by 2030. Cities, regions, businesses and forestry initiatives account for more than half of all possible emission reductions from these initiatives, making their implementation a key policy focus.
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.