Article
Energy & Fuels
M. A. Sundaramahalingam, S. Karthikumar, R. Shyam Kumar, Karl J. Samuel, S. Shajahan, V. Sivasubramanian, P. Sivashanmugam, P. Varalakshmi, Asad Syed, Najat Marraiki, Abdallah M. Elgorban, R. Vinoth Kumar, I. Ganesh Moorthy
Summary: In this study, Annona squamosa seed oil was extracted and converted into fatty acid methyl esters using ultrasound-assisted extraction and transesterification methods. The optimized models showed significant results at a 95% confidence level, highlighting the potential of this rapid and simple process for biodiesel production. The experimental data supported the high yields and conversion rates achieved, demonstrating the viability of Annona squamosa seed oil as a new source for biodiesel production.
Article
Green & Sustainable Science & Technology
Rahmath Abdulla, Eryati Derman, Thivyasri K. Mathialagan, Abu Zahrim Yaser, Mohd Armi Abu Samah, Jualang Azlan Gansau, Syed Umar Faruq Syed Najmuddin
Summary: This study optimized the transesterification process to improve the efficiency of biodiesel production using WPCO. The results demonstrated that WPCO can be a potential feedstock for biodiesel production with the use of environmentally friendly biocatalysts like immobilized lipase.
Article
Agricultural Engineering
Basir Maleki, Bhaskar Singh, Hossein Eamaeili, Yatish Kalanakoppal Venkatesh, S. Siamak Ashraf Talesh, Sathyanarayanan Seetharaman
Summary: A novel and cheap catalyst, Walnut shell/sawdust catalyst, was synthesized using agricultural wastes and utilized for the production of biodiesel from waste cooking oils. Optimal conditions were determined using experiments and models, resulting in maximum biodiesel yield. The catalyst showed good recyclability and the transesterification process was found to be endothermic and non-spontaneous. The produced biodiesel met the ASTM D6751 standard, demonstrating the cost-effectiveness and potential of this oil-recycling approach.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Green & Sustainable Science & Technology
Marija R. Miladinovic, Jugoslav B. Krstic, Miodrag Zdujic, Ljiljana M. Veselinovic, Djordje N. Veljovic, Ivana B. Bankovic-Ilic, Olivera S. Stamenkovic, Vlada B. Veljkovic
Summary: The hazelnut shell ash was investigated as a new base catalyst for biodiesel synthesis, achieving the highest ester content of 98% at 5% catalyst loading, 12:1 methanol-to-oil molar ratio, and 10 minutes reaction time. Homogeneous catalysis due to catalyst leaching was confirmed to contribute to the reaction, but did not determine the overall reaction rate.
Article
Energy & Fuels
Harveer Singh Pali, Abhishek Sharma, Naveen Kumar, Yashvir Singh
Summary: The production of high quality biodiesel from Kusum oil using base catalysed transesterification has been optimized through statistical modeling. The optimized conditions yielded biodiesel with desirable characteristics and a high yield, making it a viable option for commercial production.
Article
Energy & Fuels
Vladimir Plata, Deyanira Ferreira-Beltran, Paola Gauthier-Maradei
Summary: This study examines the impact of cooking conditions on the properties of biodiesel produced from palm-based waste cooking oils. The study finds that the yield of biodiesel is influenced by cooking temperature and length of reuse, while the kinematic viscosity is only affected by the length of reuse. The produced biodiesel does not always comply with standards.
Article
Chemistry, Applied
Qi Chen, Anping Wang, Wenxuan Quan, Wei Gong
Summary: To develop new raw materials for biodiesel, Henbane seed oil was synthesized into biodiesel for the first time using K2O/γ-Al2O3 as a catalyst. The optimal transesterification reaction conditions were determined using central composite design and response surface methodology. The predicted biodiesel yield was 90.25%, and the quality of the biodiesel met the European standard EN14214.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Environmental
Adeyinka Sikiru Yusuff, Afeez Olayinka Gbadamosi, Lekan Taofeek Popoola
Summary: This study developed a new eco-friendly solid catalyst from anthill-zinc modification for methanolysis of low-grade feedstock to produce biodiesel. The optimized conditions for the reaction resulted in a high biodiesel yield of 83.16%, showing good agreement with the predicted value. The catalyst exhibited better stability after being regenerated and reused for six cycles, indicating its potential for economical biofuel production from waste products.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Hantoro Satriadi, Isdayana Yogi Pratiwi, Malikhatul Khuriyah, Widayat, Hadiyanto, Jedy Prameswari
Summary: The study aimed to develop a sustainable Ni/Zeolite catalyst derived from geothermal solid waste for waste cooking oil processing. By investigating the effects of catalyst concentration and operation temperature on transesterification process, the optimal conditions for biodiesel production from waste cooking oil were determined. Results showed that the synthesized Ni/Zeolite catalyst had granular shape, crystalline structure, increased surface area, and pore volume. Highest biodiesel yield was achieved at 3% w/w Ni/Zeolite catalyst addition and 60 degrees C operating temperature. The synthesized catalyst showed a decrease in biodiesel yield after three cycles of reuse.
Article
Thermodynamics
Papabathina Mastan Rao, Sneha Haresh Dhoria, S. Gopal Krishna Patro, Radha Krishna Gopidesi, Meshel Q. Alkahtani, Saiful Islam, Murkonda Vijaya, Juturi Lakshmi Jayanthi, Mohammad Amir Khan, Abdul Razak, Raman Kumar, Achmad Rizal, Muhammad Imam Ammarullah
Summary: In this study, the performance and emission characteristics of linseed bio-diesel with 5% graphene nanoparticles were evaluated using various methods and techniques. The results showed that the B20G5 blended fuel with 5% graphene nanoparticles exhibited better brake thermal efficiency, lower carbon monoxide and hydrocarbon emissions compared to diesel fuel, without the need for engine modifications.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Haifeng Bai, Jianshen Tian, Dilinuer Talifu, Kenji Okitsu, Abulikemu Abulizi
Summary: This study investigated the use of waste cooking oil for biodiesel production and optimized the conditions for higher yield through pre-treatment and catalyst optimization.
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
Green & Sustainable Science & Technology
Emmanuelle Gomez-Trejo-Lopez, Maria Ortencia Gonzalez-Diaz, Manuel Aguilar-Vega
Summary: A route to produce biodiesel from waste cooking oil (WCO) using catalytic membranes made of sulfonated polyphenylsulfone (S-PPS) and blends of polyphenylsulfone (PPS) and sulfonated polyphenylsulfone (PPS:S-PPS) was tested. The catalytic membranes showed a good balance between ion exchange capacity, swelling degree, and weight loss after crosslinking. Among them, the dense crosslinked membrane PPS:S-PPS 56 (MD 3 C) with 56% sulfonation degree exhibited the best balance, achieving 86% biodiesel conversion in the transesterification reaction with WCO.
Article
Energy & Fuels
Wenlu Zhang, Chunrong Wang, Beining Luo, Peihang He, Liang Li, Guoqiang Wu
Summary: Development of graphene carbon nitride supported molybdenum catalysts enables facile transesterification of waste cooking soybean oil into biodiesel with high conversion rate and selectivity. The 10%Mo/g-C3N4 catalyst exhibits the best catalytic performance. The experimental parameters and catalytic reusability of the catalyst are investigated, and the possible deactivation mechanism and regeneration method are proposed.
Article
Energy & Fuels
Warisara Woranuch, Kanokwan Ngaosuwan, Worapon Kiatkittipong, Doonyapong Wongsawaeng, Weerinda Appamana, Jon Powell, Samuel Lalthazuala Rokhum, Suttichai Assabumrungrat
Summary: In recent years, attention has been focused on the use of heterogeneous catalysts, with CaO powder being considered a promising catalyst for biodiesel production. Through investigation of catalyst pellet fabrication parameters, it was found that using an Al2O3 binder resulted in higher catalytic activity compared to kaolin and diatomite supported catalysts. The CaO to Al2O3 mass ratio significantly affected surface area and total basicity, with the CaO-A(800)-3.5:1 catalyst showing the highest biodiesel yield due to the presence of multiple active crystal phases.
Review
Thermodynamics
Karthika Pushparaj, Wen-Chao Liu, Arun Meyyazhagan, Antonio Orlacchio, Manikantan Pappusamy, Chithravel Vadivalagan, Asirvatham Alwin Robert, Vijaya Anand Arumugam, Hesam Kamyab, Jiri Jaromir Klemes, Tayebeh Khademi, Mohsen Mesbah, Shreeshivadasan Chelliapan, Balamuralikrishnan Balasubramanian
Summary: Nanotechnology plays a vital role in the food sector by enhancing food safety and quality through technologies like nano-based biosensors, improving food processing technology. Additionally, it promotes environmental sustainability through biogenic synthesis of nanoparticles and recycling of nano-based materials.
Article
Thermodynamics
Yee Van Fan, Peng Jiang, Jiri Jaromir Klemes, Pawel Oclon
Summary: The electrification of mobility is an effective solution to reduce the environmental burden of the transportation sector. This study assesses the environmental performance of power generation and identifies the potential emission reduction by altering the charging behavior of electric vehicles. The results show that charging at specific times and locations can significantly lower greenhouse gas emissions, and changing charging behavior can lead to a lower greenhouse gas footprint.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Xue-Chao Wang, Aoife Foley, Yee Van Fan, Sandro Nizetic, Jiri Jaromir Klemes
Summary: This article introduces a virtual special issue containing papers related to renewable and sustainable energy research presented at a conference. The papers cover a wide range of topics including energy storage technology, battery optimization, and energy recovery. Additionally, there are studies on cooling strategies for photovoltaic panels, gasification combined cycle power generation systems, and heat pump optimization.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Mechanics
Lei Chen, Yifan Wang, Jiri Jaromir Klemes, Jin Wang, Wenquan Tao
Summary: This study investigates the collision between a single coarse particle and a wall in a viscous media using a Hertz-Mindlin no-slip contact model. The results show that the impact velocity and viscosity of the media have significant effects on the contact processes and contact force. This research is important for optimizing flow conveying systems, reducing attrition, and improving economic development.
EUROPEAN JOURNAL OF MECHANICS B-FLUIDS
(2023)
Article
Thermodynamics
Andrii Polyvianchuk, Roman Semenenko, Petro Kapustenko, Jiri Jaromir Klemes, Olga Arsenyeva
Summary: The work proposes a novel methodology for the transition to 4th generation district heating systems (DHS) with limited investment. The methodology involves step-by-step implementation of required innovations to optimize investment schedule and payback time. Two case studies illustrated the methodology, showing a significant reduction in energy consumption and lower investments compared to traditional simultaneous implementation. The introduction of new generation DHS in Ukraine can be achieved through gradual additions and integration of new elements to the existing system.
Article
Thermodynamics
Jian Du, Jianqin Zheng, Yongtu Liang, Bohong Wang, Jiri Jaromir Klemes, Xinyi Lu, Renfu Tu, Qi Liao, Ning Xu, Yuheng Xia
Summary: Accurate prediction of natural gas consumption is crucial for long-distance pipeline system production and transportation planning, especially in the current political situation. Existing prediction methods lack consideration of spatial correlations and domain knowledge. This study proposes a novel deep learning prediction method (KE-GB-TSN) that integrates domain knowledge into association graph construction and captures temporal-spatial features, leading to more accurate and efficient predicted results compared to advanced models.
Article
Thermodynamics
Rajesh Choudhary, Abhishek Mukhija, Subhash Sharma, Rohitash Choudhary, Ami Chand, Ashok K. Dewangan, Gajendra Kumar Gaurav, Jiri Jaromir Klemes
Summary: The rate of biomedical waste generation has increased exponentially due to the SARS-CoV-2 virus. In this study, a 3-ply facemask was treated using a solvent extracted from different types of waste plastics through thermal-catalytic pyrolysis. The solvent extracted from (polypropylene + polyethylene) plastic completely dissolved the facemask, while the solvent from ABS plastic was not effective. The global potential of this approach was also evaluated.
Article
Green & Sustainable Science & Technology
Han Li, Weiqing Huang, Yu Qian, Jiri Jaromir Klemes
Summary: Vehicle emissions have become a major pollution source affecting air quality and human health in China's megacities. This study aims to explore an integrated approach to assess the risk factors of excess vehicle emissions and their impact on air quality. Bayesian Network coupled with the Fault Tree method is used as the assessment tool, and four megacities in China are selected as case studies. The analysis results show a positive correlation between the probability of excess vehicle emissions and air quality variation. This work provides a novel approach for the sustainable development of China's megacities in terms of accurate traceability, quantitative risk assessment, and prediction of urban vehicle emissions.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Jianqin Zheng, Jian Du, Bohong Wang, Jiri Jaromir Klemes, Qi Liao, Yongtu Liang
Summary: This paper proposes a hybrid framework for accurate power generation forecast of multiple renewable energy sources, which combines convolutional neural networks, attention-based long short-term memory networks, and auto-regression models to predict power generation more accurately.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Thermodynamics
Hon Huin Chin, Petar Sabev Varbanov, Jiri Jaromir Klemes, Zdravko Kravanja
Summary: Circular Economy is a well-known concept to tackle global resource depletion problems, and its sustainability and environmental performance are closely related to energy consumption. This work presents an assessment tool called Energy Quality Pinch Analysis, which determines the minimum energy requirements for a circular system and demonstrates its sustainability. The analysis considers cascades of energy used and released in recycling and symbiosis processes, evaluating the minimal external energy flows. Case studies on heat and power integration, chemical energy reuse in wastewater systems, and municipal solid waste management have shown the potential for high energy recovery rates, providing valuable guidance for system designers.
Article
Thermodynamics
Kok Sin Woon, Zhen Xin Phuang, Jan Taler, Petar Sabev Varbanov, Cheng Tung Chong, Jirf Jaromfr Klemes, Chew Tin Lee
Summary: Climate change is a major long-term threat to humanity. Transforming urban energy from carbon-intensive to carbon-free solutions is crucial for achieving carbon neutrality. This review discusses recent advances in green energy development in urban sectors, including industry, buildings, transportation, and waste treatment. It highlights the need for developing novel energy materials, improving energy storage capacity, reducing vulnerability of renewable sources, optimizing modeling, and enhancing engineering design. The challenges and recommendations for green energy development in environmental, economic, and societal aspects are summarized, along with the importance of minimizing energy consumption in waste treatment. Innovations in technology, institutional regulations, incentives, and behavioral changes are necessary for achieving carbon neutrality in urban environments.
Article
Green & Sustainable Science & Technology
Robert Hren, Annamaria Vujanovic, Yee Van Fan, Jiri Jaromir Klemes, Damjan Krajnc, Lidija Cucek
Summary: Hydrogen serves as an energy carrier and feedstock for various industrial applications, but its production, storage, and transport pose sustainability challenges. This study evaluates the environmental impacts of eleven hydrogen production sources, considering factors such as greenhouse gas emissions, energy footprints, and eco-costs. Results show that hydrogen production from acid gas yields the highest eco-benefit, while biomass gasification has the highest eco-cost. Water electrolysis exhibits a net positive energy footprint, indicating energy consumption exceeds production. Gaseous hydrogen transported via a pipeline is environmentally preferable with a lower energy footprint compared to other options.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Agricultural Engineering
Charles B. Felix, Wei-Hsin Chen, Jo-Shu Chang, Young -Kwon Park, Samrand Saeidi, Gopalakrishnan Kumar
Summary: Oxidative torrefaction is recommended for improving the fuel properties of microalgae as solid biofuels. Temperature, time, and O2 concentration have significant effects on various parameters such as solid yield, energy yield, and higher heating value. The optimal conditions for this process are 200°C, 10.6 min, and 12% O2, resulting in an energy yield of 98.73% and an enhancement factor of 1.08. Furthermore, it shows higher reactivity under an air environment compared to inert torrefaction conditions.
BIORESOURCE TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Loghman Rezaei, Samrand Saeidi, Andras Sapi, M. R. Abdollahi Senoukesh, Gyula Grof, Wei-Hsin Chen, Zoltan Konya, Jiri Jaromir Klemes
Summary: The solar chimney power plant is a simple and clean technology to generate electricity from solar radiation. This study developed a novel collector design with hanging metallic tubes to improve efficiency. Experimental and computational fluid dynamics analysis validated the new design and found that the metallic tubes significantly affected temperature and velocity distribution. The efficiency of the collector increased with the hanging metallic tubes and was also influenced by the geometry variation.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Samrand Saeidi, Andras Sapt, Asif Hussain Khoja, Sara Najari, Mariam Ayesha, Zoltan Konya, Bernard Baffour Asare-Bediako, Adam Tatarczuk, Volker Hessel, Frerich J. Keil, Alirio E. Rodrigues
Summary: Fossil fuel depletion, global warming, climate change, and rising fuel prices have prompted scientists to explore hydrogen as a commercial and environmentally friendly energy carrier. Steam methane reforming (SMR) is currently the most effective method for hydrogen production, but it faces challenges such as catalyst deactivation, coking, and CO2 generation. This article comprehensively reviews the influence of catalyst types, kinetic models, and operating conditions on high-yield H-2 production through conventional SMR, discusses intensified techniques for SMR to blue H-2, and proposes a novel and sustainable path for the SMR process to produce turquoise H-2 using new materials and emerging technologies. Additionally, the article discusses the critical points of steam reforming process technology to enhance environmental, social, and governance (ESG) profiling.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)
