Review
Green & Sustainable Science & Technology
Haris Mahmood Khan, Tanveer Iqbal, Saima Yasin, Muhammad Irfan, Muhammad Mujtaba Abbas, Ibham Veza, Manzoore Elahi M. Soudagar, Anas Abdelrahman, Md Abul Kalam
Summary: Biodiesel is recognized as a renewable, sustainable, and eco-friendly alternative to traditional diesel. The use of heterogeneous catalysts and cosolvents in biodiesel production can improve yield and efficiency.
Article
Green & Sustainable Science & Technology
Gabriela E. Mijangos, Cristina Cuautli, Issis C. Romero-Ibarra, Jorge Vazquez-Arenas, Carlos E. Santolalla-Vargas, Victor Santes, Adrian A. Castaneda-Galvan, Heriberto Pfeiffer
Summary: This study analyzes the influence of sodium and lithium content in the metasilicate crystal structure on the heterogeneous transesterification reaction for biodiesel production. The results show that sodium metasilicate possesses better stability and reutilization capacity compared to lithium metasilicate. DFT calculations reveal significant differences between these two catalysts.
Article
Green & Sustainable Science & Technology
Bidangshri Basumatary, Sanjay Basumatary, Bipul Das, Biswajit Nath, Pranjal Kalita
Summary: This study focused on the development of a solid base catalyst using waste parts of the banana plant for efficient biodiesel production. The catalyst derived from the banana trunk showed the highest efficacy in catalyzing the transesterification reaction of jatropha oil. Comprehensive characterization of the catalysts demonstrated their potential for large-scale biodiesel production with high efficiency.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
J. L. Aleman-Ramirez, Joel Moreira, S. Torres-Arellano, Adriana Longoria, Patrick U. Okoye, P. J. Sebastian
Summary: This study demonstrates the development of a sustainable biodiesel production catalyst from moringa leaves, with inorganic carbonate minerals promoting transesterification. The synthesized biodiesel meets commercial specifications, and the catalyst shows potential for reuse in multiple cycles.
Review
Engineering, Chemical
Fatai A. Aderibigbe, Suleiman Shiru, H. B. Saka, M. K. Amosa, Sherif Ishola Mustapha, Mohammed Alhassan, Ayoade L. Adejumo, Morufudeen Abdulraheem, R. U. Owolabi
Summary: The demand for cleaner fuels has led to the exploration of alternative technologies such as renewable fuels. Research into second generation biofuel feedstocks holds promise for the future of cleaner energy solutions.
CHEMBIOENG REVIEWS
(2021)
Article
Agricultural Engineering
Bahar Ghasemzadeh, Amir Abbas Matin, Biuck Habibi, Mostafa Ebadi
Summary: This research aims to design and prepare a new magnetically recoverable catalyst based on agrowastes, specifically cotton waste, for the production of biodiesel. The proposed core-shell nanocomposite catalyst showed excellent performance in catalyzing transesterification reaction and achieved optimal results under certain conditions.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Engineering, Environmental
Daniel T. Oyekunle, Maulidi Barasa, Eman A. Gendy, Sieh Kiong Tiong
Summary: In recent years, biodiesel as a substitute for fossil fuels has gained increasing attention, although its production cost is higher. To reduce the cost, biodiesel has been produced from different feedstock based on local availability, but the feedstock quality limits the quality and efficiency of the transesterification process. The quality of biodiesel depends on fatty acid compositions and physicochemical properties of the oil feedstock, and the use of solid-based catalysts has been preferred due to their reusability and ease of separation. Different catalyst properties and process parameters also influence the transesterification reaction.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Green & Sustainable Science & Technology
Zayed Al-Hamamre, Arwa Sandouqa, Basel Al-Saida, Reyad A. Shawabkeh, Mohammad Alnaief
Summary: A solid heterogeneous catalyst was prepared by impregnation of oil shale ash with KNO3 and subsequent calcination. The effects of different preparation conditions on waste cooking oil to biodiesel conversion were investigated. The characterization of the catalyst and the quantification of the produced biodiesel were performed using various analytical techniques.
Article
Energy & Fuels
Elijah Olawale Ajala, Mary Adejoke Ajala, Temitope Elizabeth Odetoye, Fatai Alade Aderibigbe, Hammed Olalekan Osanyinpeju, Mufutau Ayanniyi Ayanshola
Summary: Synthesis of heterogeneous chicken eggshell catalysts at different temperatures was studied for palm kernel biodiesel production. The CEC900 catalyst showed the highest chemical composition, surface area, and optimal parameters for producing biodiesel. The catalytic activity decreased slightly after repeated usage, suggesting CEC is a cost-effective catalyst option.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Energy & Fuels
Matheus Arrais Goncalves, Erica Karine Lourenco Mares, Jose Roberto Zamian, Geraldo Narciso da Rocha Filho, Leyvison Rafael Vieira da Conceicao
Summary: In this study, a heterogeneous magnetic acid catalyst MoO3/SrFe2O4 was synthesized and applied in transesterification of waste cooking oil, providing an environmentally friendly approach to biodiesel production. By developing a mathematical model and optimizing reaction conditions, a high ester conversion rate of 95.4% was achieved with excellent catalyst reusability and stability demonstrated through five runs.
Article
Energy & Fuels
Sanjay Basumatary, Biswajit Nath, Bipul Das, Pranjal Kalita, Bidangshri Basumatary
Summary: This study examines the use of a green catalyst derived from Heteropanax fragrans in the production of Jatropha curcas biodiesel. The catalyst exhibited high basicity and reusability, resulting in efficient catalytic performance under optimal conditions. The findings suggest that this catalyst is a promising option for biodiesel production with significant implications for reducing overall costs.
Article
Energy & Fuels
Olayomi Abiodun Falowo, Eriola Betiku
Summary: This study developed a new green heterogeneous alkali catalyst from cocoa, kola nut, and fluted pumpkin wastes for transesterification of yellow oleander-rubber seed oil blend. By optimizing catalyst concentration, temperature, and time, high yields of biodiesel were achieved, demonstrating the potential for sustainable and economic biodiesel production using agricultural waste materials.
Article
Materials Science, Multidisciplinary
Bahar Ghasemzadeh, Amir Abbas Matin, Biuck Habibi, Mostafa Ebadi
Summary: The aim of this research is to develop magnetically recoverable Heteropoly acid (HPA) based catalyst (Rubber-Fe3O4@SiO2@H3PMo12O40) for biodiesel production. The proposed catalyst, prepared by coating magnetic rubber powder with silica and impregnating it with phosphomolybdic acid, showed a Keggin structure. The performance of the catalyst in transesterification reaction was optimized, with the best conditions being 3w/w % catalyst dosage, 3 h reaction time, 12:1 molar ratio of methanol to oil, and 69 degrees C reaction temperature. The production yield was over 85% for four runs and slightly decreased to 78.87% on the fifth try.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Yue Wang, Yaseen Muhammad, Sishan Yu, Tian Fu, Kun Liu, Zhangfa Tong, Xueling Hu, Hanbing Zhang
Summary: In this study, an acid-activated clay catalyst modified by calcium hydroxide and sodium hydroxide (CaNa/AC) was used for efficient biodiesel production. The CaNa/AC catalyst exhibited higher activity and stability, achieving a 97% oil conversion under optimal reaction conditions and maintaining over 80% activity after five successive reuses. The reaction rate was accelerated with increasing temperature, and the apparent activation energy of CaNa/AC was determined to be 75.6 kJ center dot mol(-1). The enhanced biodiesel production by CaNa/AC was attributed to the increase in active sites and higher basic strength. This study presents a facile and practical method for large-scale biodiesel production.
APPLIED SCIENCES-BASEL
(2022)
Article
Green & Sustainable Science & Technology
Arpita Das, Hui Li, Rupam Kataki, Pratibha S. Agrawal, N. S. Moyon, Baskar Gurunathan, Samuel Lalthazuala Rokhum
Summary: This study demonstrates the feasibility of using Terminalia arjuna bark calcined ash (TABCA) as a renewable heterogeneous alkaline catalyst for the synthesis of biodiesel from soybean oil (SO) under microwave irradiation. The mesoporous TABCA catalyst exhibits high stability and effectively promotes the conversion of SO to biodiesel. The produced biodiesel meets the standard requirements and is compatible with existing engines.
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)
