Article
Energy & Fuels
Ming-Chien Hsiao, Peir-Horng Liao, Nguyen Vu Lan, Shuhn-Shyurng Hou
Summary: In this study, waste cooking oil with high acid value was successfully converted into biodiesel through microwave-assisted transesterification. The optimized conditions included a microwave power of 600 W, 0.8 wt % NaOH catalyst, a 12:1 molar ratio of methanol to oil, a 2-minute reaction time, and a reaction temperature of 65 degrees C. The conversion rate reached 98.2% within these conditions, meeting 96.5% of the Taiwan CNS 15072 standard value.
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
Engineering, Chemical
Ching-Hsing Lin, Yi-Tang Chang, Mei-Chou Lai, Tai-Ying Chiou, Chien-Sen Liao
Summary: This study successfully produced high-quality biodiesel from waste soybean oil through an efficient microwave-assisted transesterification process. The continuous conversion rate was approximately 95%, and energy consumption was significantly reduced. The biodiesel met the specified standards and showed improved properties compared to traditional methods.
Article
Chemistry, Applied
Paula S. Mateos, Marisa B. Navas, Susana R. Morcelle, Claudia Ruscitti, Silvana R. Matkovic, Laura E. Briand
Summary: The study focused on investigating the biocatalytic performance of a lipase obtained from Araujia sericifera latex in hydrolysis and esterification reactions with sunflower waste cooking oil. The results showed that the lipase had high enzymatic activity in hydrolyzing and esterifying the oil, with over 90% conversion of free fatty acids achieved using short chain alcohols.
Review
Engineering, Chemical
Montserrat Ceron Ferrusca, Rubi Romero, Sandra Luz Martinez, Armando Ramirez-Serrano, Reyna Natividad
Summary: This article reviews the classification of lipidic feedstocks and catalysts for biodiesel production. It discusses the pros and cons of different processes and feedstocks, with a focus on waste cooking oil (WCO) as a sustainable alternative. The article also explores advances in the study of bifunctional catalysts, which can simultaneously esterify free fatty acids (FFA) and triglycerides in WCO.
Article
Materials Science, Multidisciplinary
Ali A. Jazie, Amar J. Albaaji
Summary: The study explored the conversion of waste cooking oil into biodiesel using a mixture of bone and eggshell waste as a catalyst. Results showed a biodiesel yield of 94% under optimal conditions. Characterization of the catalysts was carried out using various techniques.
Article
Agricultural Engineering
Muhammad Hamza Nazir, Muhammad Ayoub, Imtisal Zahid, Rashid Bin Shamsuddin, Suzana Yusup, Mariam Ameen, Zulqarnain, Muhammad Umer Qadeer
Summary: This study focuses on synthesizing a sulfonated catalyst using activated carbon produced from lignin extracted from sugarcane bagasse, optimizing the transesterification process of waste cooking oil with methanol using microwave heating, achieving high yield of biodiesel, and studying the reusability and stability of the catalyst in low-grade feedstocks.
BIOMASS & BIOENERGY
(2021)
Article
Environmental Sciences
Shumei Zhang, Jianyun Xiong, Jiaxin Lu, Nan Zhou, Hui Li, Xian Cui, Qi Zhang, Yuhuan Liu, Roger Ruan, Yunpu Wang
Summary: In this study, CaO was prepared from waste eggshell, preserved egg shell, clam shell, and crab shell to catalyze pyrolysis of waste cooking oil. The results showed that eggshell and clam shell had higher CaO content and better pore properties. The effects of CaO type and catalytic mode on pyrolysis were studied, and different CaO types and catalytic modes produced different amounts of aromatics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Ayse Hilal Ulukardesler
Summary: The global energy demand is increasing and fossil fuels will eventually be depleted. Renewable biofuels, such as biodiesel, have the potential to meet the world's current energy demand. This study aims to optimize the biodiesel production process and reduce production cost by using waste cooking oil as a raw material.
Article
Energy & Fuels
J. Mercy Nisha Pauline, Ramachandran Sivaramakrishnan, Arivalagan Pugazhendhi, T. Anbarasan, Anant Achary
Summary: Experimental study on converting waste cooking oil into biodiesel was conducted, with results showing that the reaction works best at high temperatures, and waste cooking oil can be a potential feedstock for biodiesel production.
Article
Green & Sustainable Science & Technology
Jian Yang, Wen-jie Cong, Zongyuan Zhu, Zheng-diao Miao, Yi-Tong Wang, Michael Nelles, Zhen Fang
Summary: A magnetic bifunctional SrO-ZnO/MOF catalyst was synthesized for one-step biodiesel production from high acid value oils. The catalyst had both basicity and acidity, mainly composed of Sr3Fe2O6 and ZnO. The MOF support increased the catalyst's specific surface area by 3.7 times and provided magnetic separation capability. The catalyst exhibited high activity and resistance to free fatty acids, with a potential application in the biodiesel industry.
JOURNAL OF CLEANER PRODUCTION
(2023)
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
Green & Sustainable Science & Technology
Ahmed A. El-sherif, Amany M. Hamad, Engy Shams-Eldin, Heba Allah Abdelnabi Eid Mohamed, Asmaa M. Ahmed, Maha A. Mohamed, Youssef S. Abdelaziz, Fatma Al-Zahraa Sayed, Esraa Ahmed Abu El qassem Mahmoud, Taiseer M. Abd El-Daim, Heba M. Fahmy
Summary: This study investigates the catalytic transesterification of waste cooking oil (WCO) using a composite catalyst derived from chicken eggshells and silver nanoparticles. The results show that the catalyst has excellent catalytic performance, and the biodiesel yield reaches 90% with acceptable fuel characteristics. The catalyst can be reused three times, making it a cost-effective and sustainable option 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
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
Muhammad Sheraz Ahmad, Chin Kui Cheng, Huei Ruey Ong, Hamidah Abdullah, Chi Shein Hong, Gek Kee Chua, Puranjan Mishra, Md Maksudur Rahman Khan
Summary: This work reported the valorization of glycerol into tartronic acid using a Pt/CNT electrocatalyst. The nanocatalyst was synthesized using a chemical reduction method with hydrazine as a reducing agent. The Pt/CNT nanoparticles exhibited high catalytic activity and selectivity.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Chemistry, Applied
Thanapha Numpilai, Pinit Kidkhunthod, Chin Kui Cheng, Chularat Wattanakit, Metta Chareonpanich, Jumras Limtrakul, Thongthai Witoon
Summary: The calcination temperature of ZrO2 support plays a crucial role in the crystal structure and reducibility of In2O3, as well as in the formation of methane and methanol. Different calcination temperatures of ZrO2 support significantly affect the yield of methane and methanol.
Article
Chemistry, Physical
Kaykobad Md. Rezaul Karim, Mostafa Tarek, Shaheen. M. Sarkar, Rabah Mouras, Huei Ruey Ong, Hamidah Abdullah, Chin Kui Cheng, Md. Maksudur Rahman Khan
Summary: The study successfully synthesized a hybrid photocatalyst PANI@CuFe2O4 and demonstrated its high efficiency in photoelectrocatalytic reduction of CO2 to methanol. Experimental results showed that the hybrid photocatalyst exhibited high methanol formation rate and Faradaic efficiency in the PEC CO2 reduction process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Muhammad Sheraz Ahmad, Chin Kui Cheng, Prakash Bhuyar, A. E. Atabani, Arivalagan Pugazhendhi, Nguyen Thuy Lan Chi, Thongthai Witoon, Jun Wei Lim, Joon Ching Juan
Summary: The rising demand for light olefins production due to population growth, expanding transportation network, and rapid industrialization has made methanol-to-olefins conversion the most preferred route, although high selectivity remains a challenge. Molecular sieves have been an active commercial development area for the past two decades, as they efficiently decrease coke deposition, improve mass transport, and enhance catalytic performance in methanol to olefins reaction. SAPO-34 molecular sieves are highly selective for ethylene and propylene synthesis, exhibiting the best performance for the MTO process.
Article
Chemistry, Applied
Yi Ling Yeong, Sook Fun Pang, Aditya Putranto, Jolius Gimbun
Summary: This study investigated the optimum processing conditions of microwave assisted extraction of anthraquinone and flavonoids from Senna alata leaves, finding that MAE had a greater extraction rate compared to ultrasonic-assisted and maceration methods. The highest yields were obtained at 90.5% ethanol, 18.6 W/mL microwave power, with a desirability of 0.82, showing positive correlation between yield of compounds and antioxidant activity.
NATURAL PRODUCT RESEARCH
(2022)
Editorial Material
Chemistry, Physical
Jolius Gimbun, Suwimol Wongsakulphasatch
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Food Science & Technology
Afiqah Yeop, Jessinta Sandanasamy, Sook Fun Pang, Jolius Gimbun
Summary: The study demonstrated that the thermal stability and controlled release of Labisia pumila's polyphenols were improved by using a surface protein encapsulated microcapsule, which increased the polyphenols retention and elucidated degradation mechanisms involving decarboxylation and hydrolysis. The surface protein acted as a protective layer and enhanced polyphenols stability, while the release kinetics best fit the Hixson-Crowell model.
Article
Engineering, Multidisciplinary
Muhammad Norzaman Kathiman, Siti Kholijah Abdul Mudalip, Jolius Gimbun
Summary: The experimental study focused on encapsulating Mahkota Dewa extracts using maltodextrin and spray drying. Increasing feed flow rate led to larger particle size, higher moisture content, and slightly increased antioxidant activity. The study found that decreasing feed flow rate resulted in lower antioxidant activity, moisture content, and particle size.
IIUM ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Ehsan Aghaei, Vahid Rostampour, Adel Rezvanivand Fanaei, Ali M. Nikbakht, Jolius Gimbun
Summary: This study evaluated the reverse flow effect on a wheat flour cyclone performance using computational fluid dynamics simulation and experimental measurements. The results showed that the separation efficiency of wheat flour increased with increasing reverse flow levels, but decreased after a certain level.
JOURNAL OF FOOD PROCESS ENGINEERING
(2023)
Article
Polymer Science
S. Mary Stella, T. M. Sridhar, R. Ramprasath, Jolius Gimbun, U. Vijayalakshmi
Summary: The research on extracellular matrix (ECM) is a new and developing area focused on cell proliferation and differentiation, and aims to improve cell viability for various biomedical applications. ECM not only maintains biological functions but also exhibits properties such as controlled material degradation, cell binding, and cellular uptake for tissue engineering applications.
Article
Materials Science, Multidisciplinary
Jia Ning Siew, Qi Yan Tan, Kar Sing Lim, Jolius Gimbun, Kong Fah Tee, Siew Choo Chin
Summary: This paper presents a finite-element model of RC beams with and without openings strengthened with BFRC plates. The simulation results show good agreement with experimental observations. The most successful arrangement for strengthening beams with openings is to place BFRC plates perpendicular to the crack on both sides of the beam's surface, which significantly increases the load-bearing capacity. Attaching a BFRC plate to the entire bottom soffit is the most effective method for strengthening RC beams in flexure, but it reduces the beam's ductility.
Article
Chemistry, Multidisciplinary
Phonsan Saetiao, Napaphat Kongrit, Jakkrapong Jitjamnong, Chatrawee Direksilp, Chin Kui Cheng, Nonlapan Khantikulanon
Summary: A new sustainable solid carbon catalyst using pyrolytic coconut shell ash (CSA) has been developed for biodiesel synthesis. The optimum catalyst was found to be the 30 wt % K2CO3/CSA catalyst, with an obtained biodiesel yield of 97.14%. Techno-economic analysis showed a net present value of 5.16 million USD, a payback period of 2.49 years, and an internal rate of return of 44.2%. An environmental assessment revealed lower carbon dioxide emissions (1401.86 ton/y) compared to the conventional process (1784.6 ton/y).
Article
Pharmacology & Pharmacy
Nawzat D. AlJbour, Mohammad Dalour Hossen Beg, Jolius Gimbun, Mior Ahmad Khushairi Mohd Zahari
Summary: Nanofibers, with their small size and special characteristics, have potential applications in wound dressing, tissue engineering, and drug delivery systems. Chitosan, a natural polymer, is difficult to directly spin into nanofibers due to its high molecular weight, low solubility, and high viscosity. Blending chitosan with other polymers like polyvinyl alcohol, polycaprolactone, and Polylactic acid enhances its spinnability and produces better quality nanofibers.
Proceedings Paper
Materials Science, Multidisciplinary
M. Kaviya, P. Ramakrishnan, S. B. Mohamed, R. Ramakrishnan, J. Gimbun, K. M. Veerabadran, M. R. Kuppusamy, K. Kaviyarasu, T. M. Sridhar
Summary: Nano-hydroxyapatite/Graphene Oxide composites were synthesized and examined for structural and morphological changes. FTIR analysis confirmed the presence of reduced graphene oxide and graphene oxide in the composite, while FE-SEM analysis confirmed the presence of graphene flakes and nanosized hydroxyapatite on the surface.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Biotechnology & Applied Microbiology
M. N. Kathiman, S. K. Abdul Mudalip, J. Gimbun
5TH INTERNATIONAL CONFERENCE OF CHEMICAL ENGINEERING AND INDUSTRIAL BIOTECHNOLOGY (ICCEIB 2020)
(2020)
