Article
Chemistry, Physical
Ionela-Dorina Dumbrava, Calin-Cristian Cormos, Arpad Imre-Lucaci, Ana-Maria Cormos
Summary: Glycerol, a by-product of biodiesel synthesis, can be transformed into an energy carrier for renewable energy. This study investigated the performance of a packed bed reactor using a Ni-based catalyst for hydrogen production from glycerol under supercritical conditions. The results showed high hydrogen yield and almost complete glycerol conversion. The optimal process parameters were determined through CFD modeling and validated with experimental data.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Hannah Hyunah Cho, Vladimir Strezov, Tim J. Evans
Summary: Steam methane reforming is the most commonly used technology for hydrogen production, but it contributes to pollutant emissions. This study estimated the impacts of hydrogen production using real emissions data from multiple US EPA databases. The study found that global warming was the main impact, driven by CO2 emissions. Increasing hydrogen production efficiency and replacing traditional feedstocks with renewable sources can reduce the environmental impact of hydrogen production.
Article
Engineering, Environmental
Wenwen Wei, Shi Liu, Xinyu Li, Linhu Li, Wen Cao
Summary: In this study, a self-thermal supercritical water gasification system was developed to convert antibiotic residues into high-purity H2 and electrical power, achieving clean and efficient energy conversion. The system demonstrated high H2 yield and net electrical power at optimal operating conditions, along with high energy efficiency and exergy efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Agronomy
Giuliana Vinci, Roberto Ruggieri, Marco Ruggeri, Sabrina Antonia Prencipe
Summary: Rice is a crucial crop in terms of human consumption, and assessing the sustainability of its production process is of great importance. This research investigates the recent literature on Life Cycle Assessment (LCA) of rice primary production to determine the extent to which Life Cycle Thinking (LCT) and sustainability have been applied in the rice sector, as well as identify research gaps. The study reveals limited consideration of multiple functional units, methodological differences leading to result variability, and inadequate focus on socio-economic aspects.
Article
Engineering, Environmental
Ever Peralta-Reyes, Diego Vizarretea-Vasquez, Reyna Natividad, Aitor Aizpuru, Edson Robles-Gomez, Claudia Alanis, Alejandro Regalado-Mendez
Summary: The electrochemical reforming of glycerol for hydrogen production was optimized using a response surface methodology. The study found under specific conditions, maximum hydrogen production and minimum carbon dioxide emissions were achieved, demonstrating successful parameter optimization.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Heehyang Kim, Boreum Lee, Dongjun Lim, Changgwon Choe, Hankwon Lim
Summary: This study investigates potential pathways for green propylene production, and after evaluating from technical, economic, and environmental perspectives, it is concluded that MTP conversion via indirect methanol synthesis is the most appropriate alternative.
Article
Chemistry, Physical
Till Weidner, Victor Tulus, Gonzalo Guillen-Gosalbez
Summary: The need for rapid transformation to low-carbon economies has highlighted hydrogen as a potential energy carrier. However, the environmental impacts of large-scale hydrogen production are still uncertain. This study uses prospective life cycle analysis to compare different options for producing 500 Mt/yr of hydrogen and assesses their environmental and human health impacts. The results show that the climate change impacts of projected production levels exceed the planetary boundary, except for green hydrogen from wind energy. The study emphasizes the importance of considering unintended consequences and evaluates the costs of blue and green hydrogen.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Yaneeporn Patcharavorachot, Narissara Chatrattanawet, Dang Saebea, Amornchai Arpornwichanop
Summary: The study proposed an integrated system of pressurized SOFC and supercritical water reforming, with performance determined using the Aspen Plus simulator.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Environmental
Boreum Lee, Hyun-Seok Cho, Heehyang Kim, Dongjun Lim, Wonchul Cho, Chang-Hee Kim, Hankwon Lim
Summary: Alkaline water electrolysis for green H-2 production is gaining attention for its high technology readiness level and low investment, but faces challenges due to low current density. Techno-economic analysis shows that stack cost and unit electricity price must be below certain levels to be cost-competitive with conventional H-2 production method. The electricity source has significant effects on the economic feasibility and environmental impacts for green H-2 production.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Tianzuo Zhang, Yijie Zhai, Xiaotian Ma, Xiaoxu Shen, Yueyang Bai, Ruirui Zhang, Changxing Ji, Jinglan Hong
Summary: Water scarcity is a severe issue in Chinese cotton production, requiring systematic analysis of water consumption and pollutant emissions to enhance environmental performance. Direct and indirect environmental impacts from water consumption and nutrient loss hinder sustainable development, with regional concentration in Xinjiang Province. Practical measures like straw returning and energy substitution are recommended for improving environmental performance.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Merve Gordesel Yildiz, Ozgu Yoruk, Duygu Uysal, Ozkan Murat Dogan, Bekir Zuhtu Uysal
Summary: This study investigated the electrochemical reforming of glycerol for hydrogen production. The performance of the system under different operating conditions was evaluated, and the optimum conditions were determined. The effects of membrane type, pre-treatment procedure, and temperature were studied. The results showed that the maximum hydrogen production was achieved using the Zn/Zn electrode pair, 0.4 M glycerol, and 0.04 M H2SO4 at the anode side, 0.04 M H2SO4 at the cathode side, and pre-treated Nafion XL membrane under room temperature and 2 V potential.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
D. H. D. Rocha, T. A. Z. de Souza, C. J. R. Coronado, J. L. Silveira, R. J. Silva
Summary: The study found that by recycling the residual gas with high concentration of water and CO2, the glycerol reforming capacity can be maximized while increasing the system's overall exergy efficiency. This process was evaluated in three different scenarios regarding reform gas processing from technical and environmental perspectives.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Nicola Schiaroli, Mirco Volanti, Antonio Crimaldi, Fabrizio Passarini, Angelo Vaccari, Giuseppe Fornasari, Sabrina Copelli, Federico Florit, Carlo Lucarelli
Summary: The combined S/DR process utilizing clean biogas shows great potential in reducing the environmental impact and has excellent potential as carbon capture and utilization technology with the lowest damage in all categories. Further improvements in the process could help to further reduce the environmental burden and support sustainable development.
Article
Green & Sustainable Science & Technology
Pooja Yadav, Dimitris Athanassiadis, Io Antonopoulou, Ulrika Rova, Paul Christakopoulos, Mats Tysklind, Leonidas Matsakas
Summary: The study focuses on life cycle and cost assessment of novel organosolv lignin production process from spruce bark, comparing different scenarios to identify the most environmentally and economically suitable option. Results show that the baseline scenario has higher global warming potential and total cost compared to other scenarios, with scenario S2 being the most optimal choice.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Shayan Sadeghi, Samane Ghandehariun
Summary: Hydrogen is widely used in various industries and considered as a future clean energy carrier. The production of hydrogen using water splitting via the Cu-Cl thermochemical cycle is an excellent option for clean fuel production. The lifecycle assessment technique is used to study the environmental consequences of a solar Cu-Cl fuel production facility for large-scale hydrogen production. The sensitivity analysis shows that the plant lifetime has the highest impact on the total GWP of the plant.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
F. J. Campanario, F. J. Gutierrez Ortiz
ENERGY CONVERSION AND MANAGEMENT
(2017)
Article
Chemistry, Physical
F. J. Gutierrez Ortiz, F. J. Campanario
JOURNAL OF SUPERCRITICAL FLUIDS
(2018)
Article
Thermodynamics
F. J. Gutierrez Ortiz, A. Kruse, F. Ramos, P. Ollero
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Engineering, Environmental
Francisco Javier Gutierrez Ortiz, Manuel Barragan Rodriguez, Ralph T. Yang
CHEMICAL ENGINEERING JOURNAL
(2019)
Review
Chemistry, Physical
Francisco Javier Gutierrez Ortiz
JOURNAL OF SUPERCRITICAL FLUIDS
(2020)
Article
Engineering, Chemical
Kevin Cronin, Francisco J. Gutierrez Ortiz, Denis Ring, Fuweng Zhang
Summary: This paper presents a novel approach for determining the coalescence kernel in batch fluidized bed aggregation systems using a continuous sprayed-in liquid binder. The model, implemented in MATLAB, shows good agreement between numerical predictions and experimental results, demonstrating its validity in predicting the underlying mechanisms of granulation.
Article
Energy & Fuels
Francisco Javier Gutierrez Ortiz, Francisco Lopez-Guirao, Francisco Jose Jimenez-Espadafor, Jose Manuel Benjumea
Summary: Supercritical water gasification is a promising technology for wet biomass valorization, but it faces limitations in heat transfer efficiency due to factors such as low Reynolds numbers, changes in water properties, and insufficient mixing. Troubleshooting and the design of efficient devices are proposed to enhance heat transfer and scale up the technology.
Article
Chemistry, Multidisciplinary
Jose Manuel Benjumea, Francisco Jose Jimenez-Espadafor, Francisco Lopez-Guirao, Francisco Javier Gutierrez Ortiz
Summary: This study aims to explore the integration of supercritical water gasification (SCWG) processes with waste heat utilization technologies to address the energy requirements during plant start-up and operation. Through system configuration simulation and optimization, the results indicate the importance of heat exchangers and electricity generation from hot effluents for enhancing plant configuration and energy synergies.
APPLIED SCIENCES-BASEL
(2022)
Article
Thermodynamics
F. J. Gutierrez Ortiz
Summary: This review discusses the process of biofuel production from supercritical water gasification (SCWG) of sustainable biomass, including the properties of sub- and supercritical water, hydrothermal processing, reaction kinetics and mechanisms, thermodynamics and process simulation, as well as techno-economic and lifecycle assessments. It provides a comprehensive overview of the technology and proposes future research directions.
ENERGY CONVERSION AND MANAGEMENT-X
(2022)
Article
Engineering, Chemical
Kevin Cronin, Francisco Javier Gutierrez Ortiz
Summary: Minimizing final size dispersion is crucial in fluidised bed granulation. This study examines the factors affecting the evolution of granule size distribution over time using a validated aggregation model, aiming to understand the intrinsic behavior of size dispersion. The model includes a time and size-dependent aggregation rate and a granule kinetic energy dissipation mechanism. The dominant contribution is found to be from the energy absorption mechanism, and the interplay with other effects is also significant. The study also develops two new temporal parameters that can be used to predict and interpret system behavior.
Article
Engineering, Chemical
Kevin Cronin, Francisco Javier Gutierrez Ortiz
Summary: This study examines the evolution of variance and entropy in granule size during the fluidized bed agglomeration process using two different aggregation kernels. The first kernel allows unconstrained agglomeration process, leading to the fastest and largest increase in variance and entropy. The second kernel includes a growth-limiting mechanism, which significantly reduces both variance and entropy. It is shown that entropy provides a better measure of size evolution than variance as it represents the changing shape of the distribution more closely.
Article
Education & Educational Research
Francisco Javier Gutierrez Ortiz, John J. Fitzpatrick, Edmond P. Byrne
Summary: The paper emphasizes the need for contemporary engineering graduates to develop the ability to deal with increased uncertainty and complexity, and demonstrates how this can be achieved through cultivating key graduate attributes.
EUROPEAN JOURNAL OF ENGINEERING EDUCATION
(2021)
Article
Thermodynamics
F. J. Gutierrez Ortiz, B. Alonso-Farinas, F. J. Campanario, A. Kruse
Review
Chemistry, Multidisciplinary
Francisco Javier Gutierrez Ortiz, Andrea Kruse
REACTION CHEMISTRY & ENGINEERING
(2020)
Article
Education, Scientific Disciplines
Francisco Javier Gutierrez Ortiz
EDUCATION FOR CHEMICAL ENGINEERS
(2019)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)