Article
Energy & Fuels
Marwa M. Naeem, Eslam G. Al-Sakkari, Daria C. Boffito, Mamdouh A. Gadalla, Fatma H. Ashour
Summary: A KOH/corncobs-derived activated carbon (AC) heterogeneous catalyst was developed for single stage biodiesel production from highly acidic waste vegetable oil, showing activity in both esterification and transesterification reactions. Optimal conditions of sulfuric acid to raw corn cobs ratio, activation temperature, reaction time, catalyst loading, and temperature were identified to achieve a high yield of 97.8% meeting ASTM standards. The catalyst exhibited stability for up to five successive uses in esterification but easily leached KOH and became inactive in transesterification.
Article
Environmental Sciences
Jedy Prameswari, Widayat Widayat, Luqman Buchori, Hadiyanto Hadiyanto
Summary: The aim of this research was to develop a bifunctional catalyst made of iron sand and different CaO2 sources for biodiesel production. It was found that CaCO3 was the best source of CaO2, and the Fe/Ca ratio of 1:4 resulted in the highest biodiesel yield.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
Naeemah A. Ibrahim, Umer Rashid, Balkis Hazmi, Bryan R. Moser, Fahad A. Alharthi, Samuel Lalthazuala Rokhum, Chawalit Ngamcharussrivichai
Summary: A magnetic bifunctional nanocatalyst supported on activated carbon was synthesized and used for the catalytic transesterification of waste cooking oil. The catalyst showed significant acidity and basicity, which contributed to a high biodiesel yield. It also exhibited magnetism, facilitating the recovery of the catalyst from the reaction mixture. Reusability experiments demonstrated the catalyst's high stability, and the biodiesel produced met the American biodiesel standard.
Article
Thermodynamics
Mengli Guo, Weiqiang Jiang, Chao Chen, Shaokang Qu, Jie Lu, Weiming Yi, Jincheng Ding
Summary: In this study, a highly active and reusable La3+/ZnO-TiO2 photocatalyst was prepared for the esterification of free fatty acids in waste cooking oil, leading to the production of biodiesel through a two-step method. The catalyst showed stable activity and the biodiesel produced met industry standards, validating the potential of La3+/ZnO-TiO2 as a new photocatalyst for biodiesel production.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Biotechnology & Applied Microbiology
Laura Mitrea, Lavinia-Florina Calinoiu, Bernadette-Emoke Teleky, Katalin Szabo, Adrian-Gheorghe Martau, Bianca -Eugenia Stefanescu, Francisc-Vasile Dulf, Dan-Cristian Vodnar
Summary: This study investigated the ability of Y. lipolytica to biosynthesize succinic acid and citric acid using different carbon sources. The results showed that the highest colony-forming units, cell dry weight, citric acid, and succinic acid production were obtained in cultivations performed on waste cooking oil. These findings highlight the industrial potential of Y. lipolytica in bioconverting lipidic residual biomass with negative environmental implications into valuable organic compounds.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
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
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
Green & Sustainable Science & Technology
Shahabaldin Rezania, Zahra Sotoudehnia Korrani, Mohammad Ali Gabris, Jinwoo Cho, Krishna Kumar Yadav, Marina M. S. Cabral-Pinto, Javed Alam, Maqusood Ahamed, Hamid Rashidi Nodeh
Summary: The study found that LaPO4 foam can be effectively used as a heterogeneous catalyst for producing biodiesel with high catalytic efficiency and stability.
Article
Green & Sustainable Science & Technology
Shaige Xia, Yongjie Hu, Chao Chen, Junyu Tao, Beibei Yan, Wanqing Li, Guangbin Zhu, Zhanjun Cheng, Guanyi Chen
Summary: This study investigates the electrolytic transesterification of waste cooking oil (WCO) using reusable magnetic waste shells derived Co/Fe-Ca based catalysts for biodiesel production. The reaction conditions were optimized using response surface methodology, resulting in high fatty acid methyl ester (FAME) content and improved energy efficiency. The experimental results show that this method holds promise for sustainable biodiesel production and disposal of WCO.
Article
Energy & Fuels
Zahra Mansoorsamaei, Darush Mowla, Feridun Esmaeilzadeh, Kheibar Dashtian
Summary: This study focuses on biodiesel production from waste cooking oil through transesterification using a novel heterogeneous catalyst derived from waste banana peels. The catalyst, composed of biochar-Fe2O3/Fe2K6O5, was prepared by carbonating banana peel residue with Fe(III) and potassium hydroxide activator. Extensive analysis of the catalyst's properties and the influence of crucial parameters on biodiesel yield were conducted. Optimal conditions were determined, resulting in a biodiesel yield of 88.83% with promising properties. The findings highlight the importance and practical benefits of utilizing the banana peel catalyst for sustainable biodiesel production.
Review
Green & Sustainable Science & Technology
Kapil Mamtani, Kaveh Shahbaz, Mohammed M. Farid
Summary: The shift towards lesser-polluting and carbon-efficient energy systems has made biodiesel an attractive option for sustainable bioenergy. However, the lack of feedstock flexibility and reliance on vegetable oils for production poses a challenge in resource allocation, leading to potential competition with food supply. Exploring low-grade non-edible oil sources and improving catalyst selection for glycerolysis reactions are key factors in enhancing biodiesel profitability and sustainability in the future.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Energy & Fuels
Hu Pan, Qineng Xia, Hu Li, Yangang Wang, Zhangfeng Shen, Yanqin Wang, Lifen Li, Xi Li, Haiyang Xu, Zhiming Zhou, Song Yang
Summary: Efficient transformation of cheap non-edible oil into biodiesel is achieved by a novel composite material ZP-P[SIH]-2, which combines sulfonic acid functionalized poly(ionic liquid) and zirconium phosphonate. ZP-P[SIH]-2 demonstrates high catalytic activity with multi-purpose functionalities, uniform dispersion of acid and base sites, and excellent hydrophobicity and wettability for reaction substrates. The catalytic reaction exhibits low activation energy, follows a pseudo-first order model, and is endothermic, showcasing its potential for practical applications in biodiesel production.
Article
Engineering, Chemical
Nor Shafinaz Azman, Tengku Sharifah Marliza, Nurul Asikin Mijan, Taufiq Yap Yun Hin, Nozieana Khairuddin
Summary: This study aimed to investigate the potential of waste cooking oil as a green source of diesel fuel through the deoxygenation process using a Ni-Mo/AC catalyst. The results showed that sample B produced the highest yields of n-(C-8-C-20) hydrocarbon fractions.
Article
Green & Sustainable Science & Technology
Babak Aghel, Ashkan Gouran, Ehsan Parandi, Binta Hadi Jumeh, Hamid Rashidi Nodeh
Summary: This research successfully improved biodiesel production from waste cooking oil by using a GO@MgO nanocatalyst and optimizing the reaction parameters, resulting in higher purity and yield of biodiesel.
Article
Agricultural Engineering
Swapnil Sukhadeo Bargole, Prakash Kumar Singh, Suja George, Virendra Kumar Saharan
Summary: This study presents the valorization of waste cooking oil and marble waste powder in the synthesis of biodiesel using ultrasonication. The optimized conditions achieved high yields of biodiesel synthesis using various catalysts, demonstrating that ultrasonication reduced the energy requirement in biodiesel production compared to conventional methods.
BIOMASS & BIOENERGY
(2021)
Article
Engineering, Chemical
Jiawei Wang, Jie Hu, Junjie Cheng, Zefei Huang, Baoqian Ye
Summary: In this study, a superhydrophilic/underwater superoleophobic oil/water separation membrane with high separation efficiency and ultrahigh flux was successfully prepared. The membrane achieved oil/water separation without the need for external forces and exhibited good recycling performance and chemical stability in complex environments.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Mechanical
Jiawei Wang, Tao Guo, Yanmeng Chen, Xiaobo Wang, Pu Geng, Kewei Gao, Xiaolu Pang
Summary: The purpose of this paper is to examine the impact of TiN coating and TiN/AlN superlattice coating on the fatigue performance of titanium alloys. The study focuses on the interaction between the coating and the substrate to understand the influence of the coating on the fatigue properties of titanium alloys. The results demonstrate that the TiN/AlN superlattice coating, which possesses high hardness and fracture toughness, effectively suppresses strain localization on the surface, alters the initiation site of fatigue cracks, and enhances the fatigue strength by 23.7% at 10^7 cycles. Dislocation redistribution and secondary slip in the titanium alloys were observed as mechanisms to eliminate stress concentration.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Chemical
Jianjun He, Jiawei Wang, Ruifeng Wang, Jun Jie, Biao Chen, Guangwu Luo, Jiangyong Bao, Kaijun Yang
Summary: In this study, a new type of self-supplemented lubricating micro-nano composite coating was developed to solve the icing problem on wind turbine blades. The experimental results demonstrate that the coating exhibits good anti-icing performance and wear resistance, effectively reducing the adhesion between ice and the coating surface, and extending the freezing time of water droplets.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yanjun Huang, Hao Dai, Dooshaye Moonshiram, Zhuofeng Li, Zhi-Mei Luo, Ji-Hong Zhang, Wenxing Yang, Yong Shen, Jia-Wei Wang, Gangfeng Ouyang
Summary: Metal complexes hybridized with conductive supports are desirable catalysts for CO2 electroreduction. In this study, a conjugation-tuning strategy was employed to improve both the intrinsic activity of the complex and the molecule-support interactions by comparing Ni(ii) octabutoxyphthalocyanine and Ni(ii) octabutoxynaphthalocyanine on multi-walled carbon nanotubes. The impaired conjugation in NiPc-B enhances both activity and molecule-support affinity, resulting in higher faradaic efficiencies for CO production compared to NiNc-B.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Energy & Fuels
Yibo Liu, Xinyu Liu, Yuanlong Zhu, Jiawei Wang, Weiwei Ji, Xizheng Liu
Summary: In this study, Si/graphite composites with high capacity and conductivity were prepared using a simplified chemical dealloying and pitch coating process. The composite showed excellent cyclic stability and high energy density, making it a promising anode material for next-generation LIBs.
Article
Physics, Condensed Matter
Jiawei Wang, Liming Zhang, Haihong Li, Qionglin Dai, Junzhong Yang
Summary: Inequality induces two types of emotions, envy and guilt, which have different effects on the evolution of cooperation in spatial evolutionary games. Envy hinders cooperation, while guilt promotes it. Additionally, envy has a negative impact on fairness, while guilt has a positive role in fairness.
EUROPEAN PHYSICAL JOURNAL B
(2023)
Article
Chemistry, Applied
Xiong Gao, Zhen Zhou, Jiawei Wang, Hong Tian, Mengxia Qing, Liyang Jiang, Yi Cheng
Summary: The co-pyrolysis of microalgae with plastic shows promise for producing valuable chemicals and addressing waste plastic problems. Understanding the effects of different catalysts on the co-pyrolysis and reaction pathways can help intensify the process. Experimental results showed that ZSM-5 reduced the activation energy of co-pyrolysis, while CaO had the opposite effect. Both catalysts reduced the oxygen and nitrogen content in the pyrolysis product, but CaO preferred oxygen removal and ZSM-5 favored nitrogen removal. ZSM-5 was more selective for aromatic hydrocarbon conversion, while CaO favored the formation of aliphatic hydrocarbons.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Computer Science, Interdisciplinary Applications
Jia-Wei Wang, Hai-Feng Zhang, Xiao-Jing Ma, Jing Wang, Chuang Ma, Pei-Can Zhu
Summary: In this paper, a privacy-preserving framework named HE-ranking is proposed to identify influential nodes in networks based on homomorphic encryption protocol. The method collaboratively computes the nodes' importance and protects the sensitive information of each private network, effectively identifying the influential nodes while preserving privacy.
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
(2023)
Article
Food Science & Technology
Yasi Yu, Dechu Chen, Yee Ying Lee, Nannan Chen, Yong Wang, Chaoying Qiu
Summary: Curcumin-loaded solid lipid nanoparticles (Cur-SLN) were prepared using different lipid matrix (MLCD or TP) and three surfactants (T20, SQ, and Rha). The MLCD-based SLNs had smaller size and lower surface charge, while the Rha-based SLNs showed small size but low stability. The emulsifiers had an impact on crystal polymorphism and bioavailability, with T20-SLNs exhibiting higher digestibility and bioavailability. Mathematical modeling analysis showed that Cur was mainly released from the intestinal phase, and T20-SLNs had a faster release rate.
Article
Chemistry, Multidisciplinary
Jia-Wei Wang, Xian Zhang, Lucia Velasco, Michael Karnahl, Zizi Li, Zhi-Mei Luo, Yanjun Huang, Jin Yu, Wenhui Hu, Xiaoyi Zhang, Kosei Yamauchi, Ken Sakai, Dooshaye Moonshiram, Gangfeng Ouyang
Summary: By exploiting intermolecular interactions to facilitate electron delivery, two Cu(I) photosensitizers with different pyridyl pendants were designed to interact with cobalt macrocyclic catalyst, significantly enhancing the photocatalytic efficiency of a fully noble-metal-free system for CO2 reduction.
Article
Chemistry, Inorganic & Nuclear
Tong Wei, Yongchao Shi, Xiangyu Wang, Yingqiu Xu, Jiao Cui, Liwei Wu, Borui Zhang, Jiawei Wang, Yingdong Han
Summary: To design and fabricate the next generation of phosphor-related photophysical devices, achieving tunable luminescence performance in phosphors is of great significance. In this study, a series of novel photochromic tungsten bronze oxides were synthesized, showing apparent color variation from light yellow to dark brown triggered by oxygen vacancies and variable valence ion related color centers. Dual characteristics of photoluminescence and photochromism, as well as a strong coupling effect, were demonstrated in tungsten bronze oxides activated by Eu3+ and Mo6+. For the first time, multiple, real-time, reversible, and fast regulation of Eu3+ and Mo6+ co-doped Ba4Gd2Ti4Nb6O30 samples was achieved by manipulating the overlapping degree of excitation, emission, and absorption peaks. This work may have significant potential applications in logic gates, sensors, switches, and anti-counterfeiting devices.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Along Ma, Jiawei Wang, Jie Kong, Yonggang Ren, Yuxuan Wang, Xiaoshuang Ma, Meng Zhou, Shuxin Wang
Summary: The synthesis, structure determination, and photoluminescence of Au10Ag17 and Au12Ag13 nanoclusters were reported. Au10Ag17 exhibited a low photoluminescence quantum yield, while the removal of two terminal silver atoms led to a 15-fold increase in photoluminescence. The discovery of such a photoluminescence switch provides an interesting opportunity to understand the origin of fluorescence in nanoclusters.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Thermodynamics
Jiawei Wang, Yuwei Sun, Mingjian Lu, Jian Wang, Xinping Yan
Summary: In this study, the structural strength of the hybrid heat exchanger was evaluated using FEM and compared with ASME codes. The results showed that thermal stress caused by temperature gradient is independent of absolute temperature, and the change in supercritical carbon pressure in the etched channel has a greater effect on mechanical stress. Thermal stress and mechanical stress are equally important to the total stress of the hybrid heat exchanger under design conditions, and the total stress is not a simple numerical superposition but indicates a complex effect. FEM is a more comprehensive method for structural assessment than ASME codes.
Article
Construction & Building Technology
Bing Cao, Mingming Xie, Bo Huang, Gaoxing Hu, Jiawei Wang
Summary: A new FE model was constructed and verified using ABAQUS, and the axial compression performance of PCSCFST columns was investigated. The effects of various factors on the bearing capacity were analyzed, and it was found that the changes in slenderness ratio, yield strength, and diameter-thickness ratio of the steel tubes had significant effects on the bearing capacity. Additionally, a theoretical model was developed to predict the ultimate bearing capacity, and a close correlation was found between the FE simulation results and the theoretical model.
Review
Chemistry, Multidisciplinary
Dong-Cheng Liu, Zhi-Mei Luo, Bruno M. Aramburu-Troselj, Fan Ma, Jia-Wei Wang
Summary: Constructing artificial photosynthetic systems for CO2 reduction is a promising pathway to produce carbon-neutral fuels and mitigate the greenhouse effect. However, utilizing earth-abundant catalysts for photocatalytic CO2 reduction remains challenging. Cobalt-based complexes with tripodal ligands are extensively studied as molecular catalysts for CO2 photoreduction, and their progress in electronic/steric tuning and dinuclear design to achieve synergistic effects is discussed.
CHEMICAL COMMUNICATIONS
(2023)
Correction
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Seba Alareeqi, Daniel Bahamon, Kyriaki Polychronopoulou, Lourdes F. Vega
Summary: This study explores the potential application of single-atom-alloy (SAA) catalysts in bio-oils hydrodeoxygenation refining using density functional theory (DFT) and microkinetic modeling. It establishes the relationships between stability, adsorptive properties, and activity structures for bio-oil derivatives, providing guidance for the synthesis of cost-effective SAA combinations.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Bin Hu, Wen -Ming Zhang, Xue-Wen Guo, Ji Liu, Xiao Yang, Qiang Lu
Summary: This study explored the pyrolysis behaviors and mechanisms of different monosaccharides, including arabinose, galactose, galacturonic acid, and glucuronic acid. The roles of structural differences in these monosaccharides were analyzed, and it was found that glucuronic acid undergoes a special C-C bond breaking reaction during pyrolysis. The findings provide a deep understanding of the pyrolysis chemistry of hemicellulose and the role of different branches.
FUEL PROCESSING TECHNOLOGY
(2024)
Review
Chemistry, Applied
Youwei Zhi, Donghai Xu, Guanyu Jiang, Wanpeng Yang, Zhilin Chen, Peigao Duan, Jie Zhang
Summary: Hydrothermal carbonization (HTC) is an effective method for the harmless disposal of municipal sludge (MS) and offers potential applications for the obtained products. Optimizing reaction conditions, coupling with other waste materials, and combining different processes can improve the performance of HTC. Furthermore, HTC contributes to energy recovery and enhances the quality of life cycle assessment.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Jia Wang, Jianchun Jiang, Dongxian Li, Xianzhi Meng, Arthur J. Ragauskas
Summary: This study presents a scalable process for converting holocellulose and cellulosic wastes into advanced oxygen-containing biofuels with high furan, cyclic ketone, and ethanol content. By combining hydropyrolysis and vapor-phase hydrodeoxygenation using Pd/Al2O3 as a catalyst, the researchers achieved high yields and conversions. The integrated process holds great promise for biomass waste conversion into advanced biofuels.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Florian Held, Jannis Reusch, Steffen Salenbauch, Christian Hasse
Summary: The accurate prediction and assessment of soot emissions in internal combustion engines are crucial for the development of sustainable powertrains. This study presents a detailed quadrature-based method of moments (QMOM) soot model coupled with a state-of-the-art flow solver for the simulation of gasoline engines. The model accurately describes the entire cause-and-effect chain of soot formation, growth and oxidation. Experimental validation and engine cycle simulations are used to identify the root cause of observed soot formation hotspots.
FUEL PROCESSING TECHNOLOGY
(2024)