Review
Thermodynamics
Joshua Iseoluwa Orege, Olayinka Oderinde, Ghebretensae Aron Kifle, Adeola Ahmed Ibikunle, Saheed Abiola Raheem, Onome Ejeromedoghene, Emmanuel Sunday Okeke, Olubunmi Michael Olukowi, Odunola Blessing Orege, Emmanuel Oluwaseyi Fagbohun, Taiwo Oladapo Ogundipe, Esther Praise Avor, Omoyemi Oluwatosin Ajayi, Michael Olawale Daramola
Summary: Heterogeneous catalysis provides a viable alternative for low-cost biodiesel production, and catalytic transesterification is considered the most feasible synthesis method. Nine commonly used heterogeneous catalysts have been studied, with a focus on versatile catalysts with high activity and low production cost.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Review
Engineering, Environmental
Violeta Makareviciene, Egle Sendzikiene, Ieva Gaide
Summary: Recent studies have shown that microalgae hold potential for use in biodiesel synthesis. The use of heterogeneous catalysts and immobilized enzymes can simplify the synthesis process, reduce costs, and improve ester yields. Parameters such as temperature and molar ratio of alcohol to oil have significant effects on the yield under enzymatic catalysis conditions.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Review
Chemistry, Multidisciplinary
Deshal Yadav, Sudipta Datta, Sujan Saha, Subhalaxmi Pradhan, Shweta Kumari, Pavan Kumar Gupta, Vishal Chauhan, Shiva Kumar Saw, Gajanan Sahu
Summary: This review discusses the widely used heterogeneous nanocatalysts for biodiesel synthesis, which are economical, recyclable, active, and non-corrosive. The review also explores their reusability and the critical factors related to reaction conditions.
Review
Chemistry, Multidisciplinary
Manish Kumar Bharti, Sonia Chalia, Preeti Thakur, S. N. Sridhara, Atul Thakur, P. B. Sharma
Summary: The depletion and pollution of fossil fuels are prompting the use of alternative, renewable energies such as biofuels. Nanoferrites heterogeneous catalysts have been reviewed for producing biodiesel efficiently. Using transesterification, high conversion yields, low cost, and reusable catalysts can be achieved, with over 90% conversion yields possible with moderate alcohol/oil ratios.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Thermodynamics
Mukhtar Ahmed, Khwaja Alamgir Ahmad, Dai-Viet N. Vo, Mohammad Yusuf, Ahteshamul Haq, Anas Abdullah, Mohammad Aslam, Dipesh S. Patle, Zainal Ahmad, Ejaz Ahmad, Moina Athar
Summary: Biodiesel, a biofuel with multiple advantages over petroleum diesel, has seen significant growth in utilization from oil-bearing edible biomasses. However, due to increasing global prices, energy demand, and greenhouse gas emissions, edible feedstocks are not sustainable. Inedible biomasses, via catalyzed transesterification, have been proposed as potential feedstocks for biodiesel production. Nanocatalysts, favored for their easy separation and ability to retain catalytic activity, play a crucial role in biodiesel production due to their high efficiency. Nanocatalysts, such as zirconium oxide (ZrO2) and nano CaO, offer high biodiesel conversion rates and environmental friendliness. This review extensively discusses the significance of nanocatalysts in biodiesel synthesis, including reaction mechanisms, support and promoter functions, renewable feedstocks, synthesis routes, and characterization techniques. The review also covers kinetics, thermodynamics, process simulation, and optimization of heterogeneous nanocatalyzed biodiesel production. Ultimately, this review provides researchers with valuable information on developing cost-effective nanocatalysts for sustainable biodiesel production.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
Tongxin Qu, Shengli Niu, Xiangyu Zhang, Kuihua Han, Chunmei Lu
Summary: This study synthesized calcium modified Zn-Ce/Al2O3 heterogeneous base catalysts through three different methods and applied them in biodiesel production. The catalyst synthesized by the hydrothermal method exhibited the best catalytic performance, and showed good reusability with high biodiesel yield even after multiple cycles.
Article
Energy & Fuels
Milos Marinkovic, Hadi Waisi, Stevan Blagojevic, Aleksandra Zarubica, Radomir Ljupkovic, Aleksandra Krstic, Bojan Jankovic
Summary: This study presents the synthesis of a highly efficient heterogeneous catalyst based on aluminum oxide support. The catalyst is promoted with potassium iodide as an active dopant, resulting in enhanced catalyst activity. The modified sol-gel method was found to be the most favorable for synthesizing the catalyst support, which showed superior catalytic performances in the transesterification of sunflower oil. The optimal process parameters resulted in a maximum conversion rate of 99.99%.
Article
Materials Science, Multidisciplinary
D. Murguia-Ortiz, I. Cordova, M. E. Manriquez, E. Ortiz-Islas, R. Cabrera-Sierra, J. L. Contreras, B. Alcantar-Vazquez, M. Trejo-Rubio, J. T. Vazquez-Rodriguez, L. V. Castro
Summary: Mexican dolomites doped with sodium nitrate were calcined to generate mixed metal oxides for catalytic transesterification of canola oil. Among all catalysts, Na-CaO/MgO exhibited the highest conversion rate of 95.4% and the optimal theoretical conversion rate of 97.46% was obtained through nonlinear programming.
Article
Engineering, Environmental
Ricardo Rodriguez-Ramirez, Fabiola S. Sosa-Rodriguez, Jorge Vazquez-Arenas
Summary: Zinc Oxide-co-Sodium Zirconate (ZnO.Na2ZrO3) composite catalyst is synthesized for the fast transesterification of triglycerides in soybean oil, showing competitive performance compared to caustic soda. The synthesized catalyst exhibits enhanced properties and can achieve 97% biodiesel conversion under optimal conditions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Anupam Singha Roy, Aby Cheruvathoor Poulose, Aristides Bakandritsos, Rajender S. Varma, Michal Otyepka
Summary: 2D carbon materials like graphene derivatives have been explored as catalysts for biodiesel production due to their exceptional properties, but challenges such as irreversible agglomeration, low bulk density, and poor dispersibility in organic solvents limit their applications as catalysts or heterogeneous catalysts support.
APPLIED MATERIALS TODAY
(2021)
Article
Materials Science, Multidisciplinary
Natkanin Supamathanon, Kornkanok Boonserm, Sireerat Lisnund, Narong Chanlek, Bunyarat Rungtaweevoranit, Pongtanawat Khemthong, Jatuporn Wittayakun, Nattawut Osakoo
Summary: By adding Al metal during the synthesis of geopolymer, a modified Geo with larger pore size was obtained, exhibiting strong basicity of the catalysts due to strong interaction of calcium species with the aluminosilicate network. Experimental results showed that the catalyst based on CaO/Geo achieved a FAME yield of 93.12%, significantly higher than that of unfoamed Geo. The 30% CaO/Geo catalyst could be reused for at least 3 runs, demonstrating its potential as a cost-effective catalyst for biodiesel production.
MATERIALS TODAY COMMUNICATIONS
(2021)
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.
Review
Agricultural Engineering
Elendu Collins Chimezie, Xiaoxiao Zhang, Oraleou Sangue Djandja, Ude Callistus Nonso, Pei-Gao Duan
Summary: Biodiesel production from nonedible feedstocks using nanocatalysts offers a sustainable and efficient alternative. These nanocatalysts demonstrate high catalytic activity and the possibility for reusability.
BIOMASS & BIOENERGY
(2022)
Review
Engineering, Chemical
Murat Efgan Kibar, Lina Hilal, Begum Tuna Capa, Buse Bahcivanlar, Brahim Ben Abdeljelil
Summary: The utilization and production of biodiesel have increased due to its advantages over other biofuel products. Biodiesel can be produced through various methods, with transesterification being the most common. Heterogeneous catalysts are favored for biodiesel production as they reduce costs and are more environmentally friendly. This study provides an overview of biodiesel, its production methods, and specifically focuses on the use of heterogeneous catalysts and their impact on the production process.
CHEMBIOENG REVIEWS
(2023)
Review
Thermodynamics
Xiaoling Ma, Fengsheng Liu, Yaxin Helian, Chaorui Li, Zhongjie Wu, Hui Li, Huijun Chu, Yongbo Wang, Yangyang Wang, Wanpeng Lu, Min Guo, Mingzhi Yu, Shoujun Zhou
Summary: Biodiesel is a green and renewable energy source, and the use of heterogeneous catalysts like metal organic frameworks (MOFs) in its production process is gaining attention due to the difficulties of recovery and reuse associated with traditional homogeneous catalysts. The unique structure and advantages of MOFs make them a promising candidate for catalyzing biodiesel production.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Environmental Sciences
Xiao-Jin Jiang, Xiai Zhu, Zi-Qiang Yuan, Xiao Gang Li, Wenjie Liu, Sissou Zakari
Summary: Bald patches play a dual role in accelerating and mitigating desertification in high cold desert systems. The soil properties and erodibility of bald patches significantly impact the degradation of alpine meadows in the Qinghai-Tibetan Plateau. Understanding and addressing the mechanisms of bald patches in these systems is crucial for preserving alpine ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agronomy
Bin Yang, Xianjing Meng, Xiai Zhu, Sissou Zakari, Ashutosh K. Singh, Farkhanda Bibi, Nan Mei, Liang Song, Wenjie Liu
Summary: This study evaluated the influences of three cash intercrops on rubber water utilization and found that both rubber trees and intercrops highly depended on soil water from the 0-20 cm depths. Interspecific water competition occurred in rubber-based agroforestry practices, with different intercrops impacting soil water availability and water relations to rubber trees. Woody crops were found to improve the resistance of rubber plantations to frequent drought stress compared to herbaceous crops.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Chemistry, Applied
Jelena Dikic, Ivana Lukic, Jelena Pajnik, Jelena Pavlovic, Jasna Hrenovic, Nevenka Rajic
Summary: Novel composites based on natural zeolite-clinoptilolite and monoterpene phenols-thymol and carvacrol were successfully prepared by supercritical solvent impregnation method, maintaining the zeolite lattice structure while incorporating the phenols. These composites exhibited strong antibacterial activity against bacteria such as Escherichia coli and Staphylococcus aureus, with the carvacrol-containing composite showing better antibacterial effects in different water media.
JOURNAL OF POROUS MATERIALS
(2021)
Article
Environmental Sciences
Sissou Zakari, Xiaojin Jiang, Xiai Zhu, Wenjie Liu, M. Gloriose B. Allakonon, Ashutosh Kumar Singh, Chunfeng Chen, Xin Zou, P. B. Irenikatche Akponikpe, Gbadamassi G. O. Dossa, Bin Yang
Summary: The study found that the application of sulfur compounds can significantly increase the uptake of cadmium, chromium, and nickel by plants, while decreasing the uptake of copper. Under sulfur application, roots and leaves showed higher uptake of heavy metals, while grains, husks, and stalks showed lower uptake.
ENVIRONMENTAL POLLUTION
(2021)
Review
Polymer Science
Stoja Milovanovic, Jelena Pajnik, Ivana Lukic
Summary: This review provides an overview of conventional and up-to-date technologies for PLA processing, as well as the influence of processing parameters and polymer characteristics on the properties of the final material. Various possibilities for tailoring properties of PLA-based materials are highlighted, offering rich potential for applications in different industries.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Food Science & Technology
Ivana Lukic, Stoja Milovanovic, Milica Pantic, Ivana Srbljak, Ana Djuric, Vanja Tadic, Katarzyna Tyskiewicz
Summary: Extracts from Silybum marianum seeds have potential in the industrial applications of phytopharmaceuticals and food. This study compared the effectiveness of conventional and supercritical fluid extraction methods and evaluated the influence of plant cultivation, seed and extract storage on the quality of extracts. The results showed that the extracts contained a high proportion of unsaturated fatty acids and α-tocopherol, and exhibited cytotoxic activity against cancer cells.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Jelena Pajnik, Jelena Dikic, Stoja Milovanovic, Milena Milosevic, Sanja Jevtic, Ivana Lukic
Summary: Chitosan/gelatin and chitosan/gelatin/zeolite films were impregnated with thymol and carvacrol using supercritical carbon dioxide. The resulting films exhibit gradual release of bioactive compounds and are suitable for wound dressing application.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Engineering, Chemical
Ivana Lukic, Jelena Pajnik, Jakov Nisavic, Vanja Tadic, Erika Vagi, Edit Szekely, Irena Zizovic
Summary: The integrated supercritical fluid extraction-impregnation process was used to fabricate materials with antiviral properties against herpes simplex virus (HSV) by impregnating cotton gauze and starch/chitosan polymer films with Melissa officinalis extract. The study investigated the effects of the processing mode and the mass ratio of plant material to solid carrier on the impregnation yield. The impregnated materials showed a strong inhibitory effect against Bovine herpesvirus type 1 (BHV-1).
Article
Forestry
Haofei Wang, Xiai Zhu, Sissou Zakari, Chunfeng Chen, Wenjie Liu, Xiao-Jin Jiang
Summary: This study investigates the effects of different root architectures on soil water infiltration, volumetric water content, and soil water pressure head using dye infiltration experiments and HYDRUS-1D modeling. The results show that root channels can serve as preferential flow paths for water infiltration and percolation into the soil. The presence of plant roots reduces the propagation time of the wetting front, increases the volumetric water content, and affects the soil water pressure head.
Article
Chemistry, Multidisciplinary
Ivana Lukic, Jelena Pajnik, Vanja Tadic, Stoja Milovanovic
Summary: The aim of this study was to utilize supercritical CO2 as a green medium for the development of added-value materials that can be used as phytopharmaceuticals. The study showed that optimized starch aerogels with high porosity can be obtained by varying temperature and pressure, which enables maximal loading capacity for hemp seed extracts. The proposed scCO2-assisted processes demonstrated promising results for the extraction and impregnation of hemp seed flour and oil.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Physical
Stoja Milovanovic, Ivana Lukic, Marko Stamenic, Piotr Kaminski, Grzegorz Florkowski, Katarzyna Tyskiewicz, Marcin Konkol
Summary: The present study focused on improving the supercritical fluid extraction process for recovering valuable extract from Silybum marianum seeds. The effects of temperature and pressure on the extraction process were investigated, and the equipment design and process scale-up were also studied. The results showed successful transfer of the laboratory-scale extraction process to a semi-industrial scale, and the estimated cost for supercritical extract production in Poland was determined.
JOURNAL OF SUPERCRITICAL FLUIDS
(2022)
Article
Chemistry, Multidisciplinary
Stoja Milovanovic, Ivana Lukic, Piotr Kaminski, Agnieszka Debczak, Kamila Klimkowska, Katarzyna Tyskiewicz, Marcin Konkol
Summary: The study aimed to investigate the factors influencing oil extraction from milk thistle using supercritical CO2 as a green solvent. The effects of plant origin, cultivation year, seeds storage, high-pressure unit design, and initial plant material amount were examined. The results showed that adjusting the supercritical CO2 extraction parameters could improve the recovery of essential fatty acids and phenolic compounds, and the solid residues could be used for waste valorization.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Environmental Sciences
Xian-Meng Shi, Jin-Hua Qi, An-Xin Liu, Sissou Zakari, Liang Song
Summary: The response of leaf functional traits to N deposition was investigated in a subtropical montane forest. It was found that enhanced N deposition promoted the development of seedling traits toward resource acquisition. Optimum N deposition level (<= 6 kg N ha-1 yr-1) resulted in the optimization of leaf functional traits, while excessive N deposition (12 kg N ha-1 yr-1) had detrimental effects on leaf traits. Positive correlation between leaf phenotypic plasticity and integration suggested better integration of functional traits under N deposition.
ENVIRONMENTAL POLLUTION
(2023)
Review
Polymer Science
Stoja Milovanovic, Ivana Lukic, Gabrijela Horvat, Zoran Novak, Sulamith Frerich, Marcus Petermann, Carlos A. Garcia-Gonzalez
Summary: This review provides a concise overview of the recent developments in processing neat poly(lactic acid) (PLA), improvement in its properties, and preparation of advanced materials using pressurized CO2. It emphasizes the advantages of using CO2 as a green medium, such as its recyclability, tunable properties, and easy removal from the final material. The review also highlights the potential applications of PLA-based materials in various fields, such as tissue engineering, drug delivery, and thermal insulation.
Article
Engineering, Chemical
Ivana Lukic, Zeljka Kesic, Miodrag Zdujic, Dejan Skala
Summary: This study investigated the heterogeneously catalyzed methanolysis of waste cooking oil (WCO) with quicklime pretreatment. The results showed that pretreatment with quicklime significantly enhanced the transesterification rate, yielding over 96% of biodiesel in just 15 minutes compared to 1 hour without pretreatment. Furthermore, the pretreated WCO allowed for increased catalyst reuse and overall savings in catalyst amount.
HEMIJSKA INDUSTRIJA
(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)