Article
Chemistry, Applied
Jia En Lam, Abdul Rahman Mohamed, Andrew Ng Kay Lup, Mei Kee Koh
Summary: This contribution reviews the production of biofuels through catalytic deoxygenation reactions of palm fatty acid distillate. Decarboxylation and decarbonylation reactions under low hydrogen pressure condition or inert atmosphere show cost-effectiveness compared to hydro-deoxygenation reaction. The utilization of non-noble metals, particularly nickel, as catalysts shows comparable performance with noble metals and is the most promising option.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Energy & Fuels
Norshakirah Ahmad Rashidi, Elnida Mustapha, Yeow Yean Theng, Noor Azira Abdul Razak, Najihah Abdul Bar, Khairul Basyar Baharudin, Darfizzi Derawi
Summary: Waste cooking oil is an attractive feedstock for producing advanced biofuels due to its low cost and abundant availability. This study focused on the synthesis and analysis of mesoporous bimetallic catalysts for the catalytic deoxygenation of waste cooking oil. The results showed that the catalyst with 10% Ni-Fe/SBA-15 had the highest liquid yield but low selectivity towards the diesel fraction, while the catalyst with 5% Ni-Co/SBA-15 had the highest selectivity towards the diesel fraction.
Article
Chemistry, Physical
Brenda Fernanda Honorato de Oliveira, Luiz Ferreira de Franca, Nadia Cristina Fernandes Correa, Nielson Fernando da Paixao Ribeiro, Mauricio Velasquez
Summary: In this study, liquid biofuels were produced from PFAD under hydrogen absence using Ni/Zeo, Co/Zeo, and NiCo/Zeo catalysts. Results showed that NiCo/Zeo catalyst at 300 degrees C exhibited the highest yield of OLPs, indicating a cooperative effect between Ni and Co.
Review
Engineering, Chemical
Hilman Ibnu Mahdi, Alireza Bazargan, Gordon McKay, Nur Izyan Wan Azelee, Lucas Meili
Summary: Global consumption of fossil fuel energy is predicted to rise, leading to environmental pollution and resource depletion. Green diesel, with abundant raw materials, non-polluting production, and cost-effectiveness, is a potential substitute for petroleum-based diesel.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Green & Sustainable Science & Technology
Noor Azira Abdul Razak, Nurul-Asikin Mijan, Yun Hin Taufiq-Yap, Darfizzi Derawi
Summary: This study successfully produced green diesel from domestic waste cooking oil using a nickel-cobalt/organosilane-SBA-15 catalyst via hydrogen-free and solventless deoxygenation. The functionalization process increased the catalyst's surface area and acidity, resulting in excellent catalytic activity and diesel selectivity during the deoxygenation reaction. The catalyst also maintained its selectivity after multiple cycles of use.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Abdulkareem Alsultan, Nurul Asikin-Mijan, Laith Obeas, Aminul Islam, Nasar Mansir, Siow Teo, Siti Razali, Maadh Nassar, Surahim Mohamad, Yun Taufiq-Yap
Summary: Green diesel, a substitute for biodiesel, was innovated using deoxygenation technology. It showed high stability and selectivity, making it a promising alternative fuel.
Article
Chemistry, Applied
John Zafeiropoulos, George Petropoulos, Eleana Kordouli, Christos Kordulis, Alexis Lycourghiotis, Kyriakos Bourikas
Summary: This study prepared two series of nickel catalysts supported on silica for the selective deoxygenation of sunflower oil into green diesel without solvent. The results showed that the active nickel surface area and moderate acidity had a significant effect on the green diesel yield. Among the catalysts prepared by four different methods, the catalyst synthesized by wet impregnation exhibited the highest active surface area and moderate acidity, therefore showing the best performance in the selective deoxygenation of sunflower oil.
Article
Chemistry, Physical
Eduardo Falabella Sousa-Aguiar, Carolina Zanon Costa, Maria Antonieta Peixoto Gimenes Couto, Debora de Almeida Azevedo, Jose Faustino Souza de Carvalho Filho
Summary: This study demonstrates the thermal deoxygenation of palm residue under sub- and supercritical water conditions using Raney nickel catalyst, which showed high selectivity for bio-kerosene and diesel without the need for external hydrogen supply. The best results were achieved at 390 degrees C, 10wt.% catalyst load, and 3.5 hours of reaction time. The Raney nickel catalyst promoted decarboxylation and/or decarbonylation reactions over hydrodeoxygenation reaction.
Article
Chemistry, Applied
Christos Papadopoulos, Eleana Kordouli, Labrini Sygellou, Kyriakos Bourikas, Christos Kordulis, Alexis Lycourghiotis
Summary: In this study, the promoting action of tungsten (W) in Ni-Al2O3 co-precipitated catalysts with high nickel loading was investigated. It was found that a WNi-Al2O3 catalyst containing 8 wt% W and 35 wt% Ni showed the highest efficiency, attributed to various factors such as increasing specific surface area, regulating acidity, decreasing inactive nickel-aluminate formation, and the participation of W5+-oxo species. The optimal reduction-activation temperature was identified to be 500°C, balancing various factors for improved performance.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Agricultural Engineering
Kritpornpawee Pindit, Anusith Thanapimmetha, Maythee Saisriyoot, Penjit Srinopakun
Summary: This research presents a 5-step chemical reaction and modifications to convert triglyceride of jatropha and soybean oils to biolubricant. The process involves saponification, hydrolysis, urea crystallization, epoxidation, epoxide ring opening, and esterification. The synthesized biolubricant basestocks appear to be suitable for a hydraulic fluid application.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Energy & Fuels
Suppakit Eiadtrong, Kittinan Maliwan, Thanansak Theppaya, Taweesak Kattiyawan, Gumpon Prateepchaikul, Theerayut Leevijit
Summary: This study investigated the properties and utilization of commercial high speed diesel-palm fatty acid distillate-anhydrous n-butanol blends in a direct injection diesel engine. The ternary blends prepared were stable, met Thai diesel standards, and performed well in the engine test with slightly improved brake thermal efficiencies and lower emissions of smoke and carbon monoxide compared to diesel fuel. However, the oxygenated blends still emitted higher levels of unburned hydrocarbons and nitrogen oxides than diesel fuel.
Article
Chemistry, Physical
Sanaa Hafeez, Sultan M. Al-Salem, Kyriakos N. Papageridis, Nikolaos D. Charisiou, Maria A. Goula, George Manos, Achilleas Constantinou
Summary: The study successfully developed a comprehensive heterogeneous computational fluid dynamic (CFD) model to predict the selective catalytic deoxygenation of palm oil over an Ni/ZrO2 catalyst. The results showed that paraffin conversion increased with temperature, reaching a maximum at 300 degrees C, but higher temperatures led to catalyst deactivation. The CFD model accurately predicted the deactivation by correlating catalytic activity with reaction temperature.
Article
Chemistry, Applied
George Petropoulos, John Zafeiropoulos, Eleana Kordouli, Labrini Sygellou, Christos Kordulis, Alexis Lycourghiotis, Kyriakos Bourikas
Summary: Research was conducted on reduced NiMo catalysts supported on titania for the transformation of vegetable oils to green diesel. The catalysts were prepared using the deposition-precipitation method and characterized by various techniques. The optimal catalyst formulation had a synergistic [Ni/(Ni+Mo)] atomic ratio of 0.99 and achieved high conversion yields of 65±2% for various crude oils.
Article
Chemistry, Analytical
M. Safa-Gamal, N. Asikin-Mijan, Mahashanon Arumugam, Wan Nor Adira Wan Khalit, I. Nur Azreena, Fatma S. Hafez, Y. H. Taufiq-Yap
Summary: Activated carbon-supported Co-Ag catalysts showed high deoxygenation efficiency and conversion of fatty acids to hydrocarbon liquid products, with a synergistic effect between the active metals and activated carbon support significantly facilitating the selective deoxygenation pathway.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Multidisciplinary
Aldo Miro de Medeiros, Karoline de Sousa Castro, Mayara Lopes Gundim de Macedo, Aruzza Mabel de Morais Araujo, Djalma Ribeiro da Silva, Amanda Duarte Gondim
Summary: This study successfully developed a method to obtain hydrocarbons similar to drop-in fuels through catalytic pyrolysis of vegetable oil. The addition of catalysts improved the conversion rate and efficiency of the deoxygenation process.
Article
Energy & Fuels
Usman Idris Nda-Umar, Irmawati Ramli, Ernee Noryana Muhamad, Yun Hin Taufiq-Yap, Norsahida Azri
Summary: Sulfonated carbon catalysts were synthesized using different carbonization methods and characterized in detail. The catalytic activity of the catalysts in glycerol acetylation was influenced by their textural properties and acidic site density.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Physical
Irfan Shah, Rohana Adnan, Abdulkareem Ghassan Alsultan, Yun Hin Taufiq-Yap
Summary: This study reports on the synthesis of biodiesel from waste cooking oil using iron-impregnated activated carbon catalysts. The catalysts were thoroughly characterized using various techniques, and one catalyst showed the highest yield of biodiesel under mild reaction conditions. The spent catalyst was found to be reusable.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
Nurul Asmawati Roslan, Sumaiya Zainal Abidin, Osarieme Uyi Osazuwa, Sim Yee Chin, Y. H. Taufiq-Yap
Summary: This study evaluated the catalytic activity of ruthenium-doped catalysts with different loadings in glycerol dry reforming reactions. The results showed that the 3%Ru-15%Ni/EA catalyst had the best catalytic activity and stability, and it was more coke-resistant compared to other promoted catalysts.
Article
Chemistry, Analytical
Wan Nor Adira Wan Khalit, N. Asikin-Mijan, Tengku Sharifah Marliza, M. Safa-Gamal, Mohd Razali Shamsuddin, I. Nur Azreena, Mohd Izham Saiman, Y. H. Taufiq-Yap
Summary: In this study, green diesel was successfully synthesized using Ni20Zn10/AC catalyst with good deoxygenation performance and recyclability, showing great potential for commercialization.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Physical
Abdulkareem Alsultan, Nurul Asikin-Mijan, Laith Obeas, Aminul Islam, Nasar Mansir, Siow Teo, Siti Razali, Maadh Nassar, Surahim Mohamad, Yun Taufiq-Yap
Summary: Green diesel, a substitute for biodiesel, was innovated using deoxygenation technology. It showed high stability and selectivity, making it a promising alternative fuel.
Article
Biotechnology & Applied Microbiology
Nurhani Fatihah Jariah, Ahmad Muhaimin Roslan, Mohd Ali Hassan, Yun Hin Taufiq-Yap
Summary: Material with negative value such as grease trap waste can be a cost-effective feedstock for biodiesel production. This study identifies the optimum conditions for biodiesel production and demonstrates the effectiveness of bio-based adsorbent for purification.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2022)
Review
Materials Science, Multidisciplinary
Aminul Islam, Siow Hwa Teo, Chi Huey Ng, Yun Hin Taufiq-Yap, Shean Yaw Thomas Choong, Md. Rabiul Awual
Summary: This article discusses the interest in developing catalytic desulfurization and denitrification to remove toxic or harmful gases before atmospheric emission. A review of new and advanced SOx/NOx mitigation techniques is provided, offering insights into the key features of this field.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Energy & Fuels
Fatma S. Hafez, Bahaaeddin Sa'di, M. Safa-Gamal, Y. H. Taufiq-Yap, Moath Alrifaey, Mehdi Seyedmahmoudian, Alex Stojcevski, Ben Horan, Saad Mekhilef
Summary: This article provides a systematic review of best practices in targeting energy efficiency as a roadmap for carbon mitigation, limiting energy use, improving buildings' energy performance, and reducing energy consumption. It identifies challenges, motivations, recommendations, and pathways for future work, while also discussing methodological aspects for future researchers.
ENERGY STRATEGY REVIEWS
(2023)
Article
Chemistry, Applied
Azizul Hakim Lahuri, Afidah Abdul Rahim, Norazzizi Nordin, Rohana Adnan, Nur Farhana Jaafar, Yun Hin Taufiq-Yap
Summary: Activated carbon treated with KMnO4 and impregnated with iron oxide showed the highest adsorption capacity of 108.60 mg/g. The CO2 adsorption isotherm at 25 °C fitted best with the Freundlich model, indicating multilayer adsorption on a heterogeneous surface. The optimum adsorption temperature was found to be 30 °C, and the adsorption followed a pseudo-second-order kinetic with an activation energy of 39.8 kJ/mol. The slight reduction in adsorption capacity after four cycles demonstrated practical efficiency in CO2 capture.
Article
Biochemistry & Molecular Biology
Gopalakrishnan Sasikumar, Annadurai Subramani, Ramalingam Tamilarasan, Punniyamurthy Rajesh, Ponnusamy Sasikumar, Salim Albukhaty, Mustafa K. A. Mohammed, Subramani Karthikeyan, Zaidon T. Al-aqbi, Faris A. J. Al-Doghachi, Yun Hin Taufiq-Yap
Summary: A series of ternary metal complexes (Co(II), Ni(II), Cu(II), and Zn(II)) were synthesized and characterized by elemental analysis and spectroscopic methods. These complexes were synthesized from metal salts with Schiff's-base-containing amino acids, salicylaldehyde derivatives, and heterocyclic bases, and showed promising pharmacological properties. The complexes exhibited a distorted, square pyramidal geometry around metal ions and their molecular structures were optimized by DFT calculations. The complexes were further investigated for their electrochemical behavior, catalytic properties, antibacterial activity, cytotoxic effects, and anticancer applications.
Article
Multidisciplinary Sciences
Ramalingam Tamilarasan, Annadurai Subramani, G. Sasikumar, Pandurangan Ganapathi, S. Karthikeyan, Sasikumar Ponnusamy, Salim Albukhaty, Mustafa K. A. Mohammed, Zaidon T. Al-aqbi, Faris A. J. Al-Doghachi, Duha S. Ahmed, Yun Hin Taufiq-Yap
Summary: In this study, water-soluble substituted trimeric triaryl pyridinium cations with various inorganic counter anions were successfully synthesized using a solvent-free method. Compared to conventional and silica-supported Muffle furnace methods, the solvent-free synthesis method offers advantages such as non-toxicity, quicker reaction times, ease of workup, and higher yields. Trimeric substituted pyridinium salts exhibit excellent catalytic activity for the preparation of Gem-bisamide derivatives. The molecular docking results showed that benzyl/4-nitrobenzyl substituted triaryl pyridinium salt compounds can strongly interact with VEGFR-2 kinase and control its activity in cancer treatment and prevention.
SCIENTIFIC REPORTS
(2023)
Review
Environmental Sciences
Chi Huey Ng, Mohd Aizzan Mistoh, Siow Hwa Teo, Andrea Galassi, Azreen Ibrahim, Coswald Stephen Sipaut, Jurry Foo, Jeffrey Seay, Yun Hin Taufiq-Yap, Jidon Janaun
Summary: Plastic pollution is a pressing environmental issue that has caused severe and irreversible impacts on marine life, ecosystems, and the environment due to the lack of effective waste management systems. Limited resources and infrastructure in Southeast Asia pose constant challenges to waste management. This study aims to examine the plastic situation in Southeast Asia, understand the issues with existing waste management systems, and review the efforts made by governments, private sectors, social organizations, stakeholders, and consumers to combat plastic pollution.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Amadi Fidelis Uchenna, Ramli Irmawati, Yun Hin Taufiq-Yap, Saiman Mohd Izham, Usman Idris Nda-Umar
Summary: A biomass derived carbon supported yttrium oxide catalyst (Y2O3/PKS-T700) was synthesized and showed high glycerol conversion and product selectivity in glycerol acetylation reaction. The synthesized catalyst exhibited mesoporous structure, large surface area, and good thermal stability. The catalyst was characterized by various analytical techniques including BET surface area analysis, XRD, TGA, SEM-EDX, FTIR, and TPD-NH3.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Review
Environmental Sciences
Nurul Najiha Datu Masjidin, Collin Glen Joseph, Yun Hin Taufiq-Yap, Ahmad Zuhairi Abdullah, Noor Fazliani Shoparwe, Nur Ammarah Affandi, Janice Lay Hui Nga
Summary: Aquaculture sectors are rapidly developing worldwide, but their untreated effluents can have detrimental effects on the environment. Pollution and industrial waste are endangering water resources and damaging ecosystems globally. Therefore, it is essential to develop treatment methods for wastewater. Photolysis and photocatalysis, as part of advanced oxidation processes (AOPs), offer a sustainable option for the removal of recalcitrant pollutants from aquaculture effluents. This review aims to provide an overview of the application of photolysis and photocatalysis for degradation of recalcitrant pollutants from aquaculture effluents, discussing degradation schemes, experimental factors, and employed photocatalysts.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
T. S. Marliza, M. A. Yarmo, A. H. Lahuri, Y. H. Taufiq-Yap
Summary: The hybrid sorbent of ionic liquid immobilized silica can enhance the adsorption capacity of CO2 capture. The physical adsorption of CO2 is controlled by the porous nature of the sorbent, while the chemical adsorption-desorption is affected by the base strength and the presence of fluroalkyl functional group in the sorbent.
MATERIALS TODAY-PROCEEDINGS
(2022)
Article
Agricultural Engineering
G. Grasa, I. Martinez, R. Murillo
Summary: Gasification kinetics of six chars from residual origin were studied under relatively low temperature, low CO2, and high H2O partial pressures. The Random Pore Model (RPM) showed the best fit to experimental results, but the selection of the reaction model depended on the ash composition, specifically the presence of alkali and alkaline earth metals. Chars with ash content higher than 30% wt. were modeled with the RPM model, while chars with the highest K/Si ratio required modified versions of the RPM to accurately predict reaction rates. Textural properties played a key role in determining reaction parameters, such as the pre-exponential factor and activation energy, for chars with similar ash content and composition.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
V. Godvin Sharmila, Surya Prakash Shanmugavel, J. Rajesh Banu
Summary: Proper treatment and disposal of biomass waste is crucial to prevent environmental deposition and its negative impacts. Biofuel has emerged as a potential alternative to fossil fuels, reducing carbon emissions and meeting global energy demands. This review examines different biomass waste conversion techniques and explores the production of biofuels with zero carbon emissions. Research on anaerobic treatment, metabolic engineering, and artificial intelligence has been conducted to enhance biofuel production efficiency.
BIOMASS & BIOENERGY
(2024)
Review
Agricultural Engineering
Selvakumar Periyasamy, Adane Asefa Adego, P. Senthil Kumar, G. G. Desta, T. Zelalem, V. Karthik, J. Beula Isabel, Mani Jayakumar, Venkatesa Prabhu Sundramurthy, Gayathri Rangasamy
Summary: Valorizing agricultural waste into valuable products is crucial for environmental protection and bioeconomy advancement. Preprocessing of agricultural waste is a critical step to convert free carbohydrate molecules for final conversion, and factors such as biomass nature, feed loading, pH, temperature, and time influence the process. This review provides comprehensive information on agricultural waste availability, preprocessing techniques, and factors influencing performance.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Aqueel Ahmad, Ashok Kumar Yadav, Achhaibar Singh, Dinesh Kumar Singh
Summary: The study focuses on predicting and optimizing the yield of biogas production in an anaerobic digester using co-digestion. Experimental data was used to develop a machine learning-based prognostic model, and the Response Surface Methodology (RSM) was employed to optimize the parameters. The results demonstrate that RSM coupled with machine learning is an effective technique for modeling, predicting, and optimizing biogas production yield.
BIOMASS & BIOENERGY
(2024)
Article
Agricultural Engineering
Yijing Zhong, Wenxiang Zhai, Xinli Wei
Summary: This paper studies the thermal stability and decomposition of cork materials with and without silica aerogel filler. The results show that the decomposition is inhibited and the pyrolysis is significantly reduced with the addition of silica aerogel. This finding suggests that silica aerogel-infused cork may be a promising raw material for biofuel production with reduced environmental pollution.
BIOMASS & BIOENERGY
(2024)