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
Bahar Ghasemzadeh, Amir Abbas Matin, Biuck Habibi, Mostafa Ebadi
Summary: This research aims to design and prepare a new magnetically recoverable catalyst based on agrowastes, specifically cotton waste, for the production of biodiesel. The proposed core-shell nanocomposite catalyst showed excellent performance in catalyzing transesterification reaction and achieved optimal results under certain conditions.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
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
Energy & Fuels
Sana Gohar Khan, Muhammad Hassan, Mustafa Anwar, Zeshan, Uneeb Masood Khan, Chao Zhao
Summary: This research presents the synthesis and application of Pr-CaO catalysts for biodiesel production from castor oil, which showed stable, active, and low-cost characteristics. The obtained catalyst exhibited a high FAME yield of 87.42% under optimal reaction conditions using 7% Pr-CaO mixed oxide catalyst.
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
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
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
Green & Sustainable Science & Technology
Liqun Bai, Abdolreza Tajikfar, Sajad Tamjidi, Rauf Foroutan, Hossein Esmaeili
Summary: In this study, biodiesel production from waste edible oil with MnFe2O4/graphene oxide catalyst was investigated, resulting in a high biodiesel yield and improved physical properties. However, the unsuitability of the cloud point for biodiesel use in cold weather should be noted.
Article
Energy & Fuels
Ozlem Bedir, Tuba Hatice Dogan
Summary: In this study, biodiesel was successfully synthesized using a promising catalyst derived from sugar industry waste, with an optimized reaction condition yielding high biodiesel production rates meeting quality standards. The results suggest that utilizing this catalyst from sugar industry waste could reduce the production cost of biodiesel.
Article
Environmental Sciences
Saman Hanif, Mabkhoot Alsaiari, Mushtaq Ahmad, Shazia Sultana, Muhammad Zafar, Rozina, Farid A. Harraz, Abdulrahman Faraj Alharbi, Abdulaziz A. M. Abahussain, Zubair Ahmad
Summary: Membrane technology is an environmentally friendly and efficient method for biodiesel synthesis. In this study, it was used to synthesize biodiesel from Toona ciliata seed oil, which has a high oil content. Green synthesized barium oxide nanoparticles were employed as a catalyst for one-step transesterification. Quantitative analysis of the synthesized biodiesel confirmed its compliance with international standards.
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.
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
Energy & Fuels
Ramachandran Kasirajan, Edo Begna Jiru, Ermiyas Girma, Venkata Ramayya Ancha, Sasivaradhan Sadasivam, Mani Jayakumar, Rajasimman Manivasagan
Summary: This study utilized croton macrostachyus leaves and seeds as resources for metal oxides nano-catalyst synthesis and biodiesel production, characterizing and optimizing the preparation process through various analytical methods, demonstrating the effectiveness of the nano-catalyst in biodiesel production.
Article
Agricultural Engineering
T. Ganesha, S. B. Prakash, S. Sheela Rani, B. S. Ajith, G. C. Manjunath Patel, Olusegun D. Samuel
Summary: This study utilized the Grey Wolf Optimizer (GWO) to build a novel composite biodiesel from animal waste fat, cottonseed, and crude rice bran. The effectiveness and commercial viability of the biodiesel production were investigated using Response Surface Methodology (RSM) and GWO modeling, resulting in a high-quality biodiesel that meets quality standards.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Crystallography
Mohammed Rafi Shaik, Mujeeb Khan, J. V. Shanmukha Kumar, Muhammad Ashraf, Majad Khan, Mufsir Kuniyil, Mohamed E. Assal, Abdulrahman Al-Warthan, Mohammed Rafiq H. Siddiqui, Aslam Khan, Muhammad Nawaz Tahir, Syed Farooq Adil
Summary: The utilization of heterogeneous catalysts can reduce the cost of biodiesel production by eliminating the separation step. In this study, (X wt%)Ni-ZrO2 catalysts were prepared through a hydrothermal process and tested for biodiesel production using waste cooking oil and methanol. The physicochemical characteristics of the catalysts were examined, and the (10 wt%)Ni-ZrO2 catalyst was found to have the highest surface area and catalytic activity. Under optimal conditions, it achieved a biodiesel production yield of 90.5%. The catalyst also showed good stability, with minimal loss in activity after five cycles of reuse.
Article
Engineering, Chemical
Avneet Kaur, Amjad Ali
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Chemistry, Multidisciplinary
Richa Jaswal, Tae In Hwang, Dinesh Kumar, Jeong Chan Lee, Chan Hee Park, Cheol Sang Kim
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2020)
Article
Engineering, Chemical
Himmat Singh, Amjad Ali
Summary: In this study, a heterogeneous catalyst was prepared for the transesterification and esterification of waste cooking oil, achieving a high yield of fatty acid methyl ester under optimized conditions. The catalyst showed stability even in the presence of high moisture and free fatty acid contents.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Pharmacology & Pharmacy
Ludwig Erik Aguilar, Carmen Chalony, Dinesh Kumar, Chan Hee Park, Cheol Sang Kim
Summary: Caffeic acid, a natural phenolic molecule, can be used as a multifunctional coating for nanoparticles, carrying chemotherapeutics and targeting ligands while also providing anti-oxidant, anti-cancer, and anti-inflammatory effects. The resulting nanomedicine showed cancer cytotoxicity and tumor inhibiting properties, demonstrating promising potential for cancer therapy.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Biochemical Research Methods
Rajesh Kondabala, Vijay Kumar, Amjad Ali
Summary: The proposed computational approach utilizes in-silico molecular screening hypothesis to design computational models mimicking natural glucose receptors, with ZINC82047919, ZINC238094340, and ZINC238519600 compounds-based models showing better interactions with glucose. The molecular dynamics simulation results suggest that the receptor designed using compound ZINC238094340 undergoes significant conformation changes and the receptor designed from ZINC238094340 and ZINC238519600 compounds is used as a reference glucose binding receptor in the study.
JOURNAL OF MOLECULAR GRAPHICS & MODELLING
(2021)
Article
Materials Science, Multidisciplinary
Richa Jaswal, Vignesh Krishnamoorthi Kaliannagounder, Deockhee Yoon, Dinesh Kumar, Chan Hee Park, Cheol Sang Kim
Summary: The use of gold-reinforced graphene nanosheets in a polycaprolactone nanofibrous scaffold significantly enhances bone tissue regeneration, improving electrical conductivity and mechanical strength. Electric field simulation studies demonstrate uniform distribution, while the combination of gold nanoparticles and graphene enhances cell adhesion and proliferation. After incubation, the scaffold shows increased alkaline phosphatase activity and calcium mineralization.
Article
Chemistry, Multidisciplinary
Avneet Kaur, Amjad Ali
Summary: The commercial CaO was modified to enhance its moisture resistance properties using aliphatic and aromatic groups, with benzyl-modified CaO catalyst showing better catalytic activity in the transesterification reaction. The modified CaO catalysts were found to resist moisture adsorption better than the native counterpart, with the 0.5-Ben/CaO catalyst forming a hydrophobic layer on the CaO surface to withstand water content in the reaction.
Article
Engineering, Multidisciplinary
Richa Jaswal, Vignesh Krishnamoorthi Kaliannagounder, Dinesh Kumar, Chan Hee Park, Cheol Sang Kim
Summary: In this study, hybrid plasmonic aligned nanofibrous scaffolds composed of reduced graphene oxide (rGO) nanosheets and gold nanorods (AuNR) were investigated for breast cancer photo-therapy and nerve regeneration. The results showed that the inclusion of AuNR-rGO in polycaprolactone (PCL) led to enhanced physicochemical and optical properties, making it an excellent photo agent for breast tumor ablation. The nanofibrous scaffold also promoted the adhesion, proliferation, growth, and differentiation of PC12 cells and showed high affinity to S42 cell proliferation and migration, leading to improved nerve growth.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Chemistry, Physical
Dinesh Kumar, Richa Jaswal, Chan Hee Park, Cheol Sang Kim
Summary: In this study, three different amorphous structural designs of Mn nanomaterials were developed to enhance the efficiency of CO2 photoreduction and Suzuki-Miyaura coupling reaction. The MnNPs@GNRs exhibited high yields for CO2 reduction to HCOOH and biphenyl formation under visible light and even NIR and sunlight irradiation. Additionally, MnNPs@GNRs showed excellent stability for multiple cycles of CO2 conversion and coupling reaction.
MATERIALS TODAY ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Dinesh Kumar, Richa Jaswal, Chan Hee Park, Cheol Sang Kim
Summary: “”
In this study, monodispersed tricomponent MnNSs-SnO2@Pt and MnNFs-SnO2@Pt nanocomposites were prepared by simultaneous coating of SnO2 and Pt nanodots on Mn nanospheres and Mn nanoflowers. These nanocomposites exhibited high efficiency for CO2 photoreduction under visible-NIR-sunlight irradiation, with MnNFs-SnO2@Pt showing the highest efficiency. The nanocomposites also demonstrated robust morphology, sustained structural stability, and long shelf-life, making them suitable for multiple reaction cycles without significant loss in photocatalytic efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Biomaterials
Dinesh Kumar, Ji Yeon Lee, Myeong Ju Moon, Wooju Kim, Yong Yeon Jeong, Chan Hee Park, Cheol Sang Kim
Summary: Nanogap amplified plasmonic heat-generators were fabricated by decorating Pt nanodots on gold nanospheres and studied for passive targeted plasmonic photothermal therapy in colon cancer. The generated heat had high therapeutic effect and the generators showed excellent colloidal and photo-stability. In vivo experiments demonstrated low toxicity, high biocompatibility, longer stay time at tumor site, less uptake in other organs, and potential for enhanced therapy. These findings provide a foundation for clinical applications.
BIOMATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Beom-Su Kim, Dinesh Kumar, Chan Hee Park, Cheol Sang Kim
Summary: Surface modification of gold nanorods was conducted with siRNA and mPEG to prepare hot plasmonic mPEG@siRNA@GNR nano-assemblies for highly efficient photothermal therapy. The nanostructures showed enhanced colloidal stability, increased light absorption, and improved photothermal temperature with low cytotoxicity. The combination of NIR-triggered hyperthermal treatment and strategic HSPA1A gene silencing demonstrated effective anti-cancer effects.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Madhu Katiyar, Km Abida, Amjad Ali
Summary: The immobilization of Candida rugosa lipase on mesoporous silica (SBA-15) was achieved by physical adsorption, resulting in successful transesterification of cotton seed oil with methanol to produce fatty acid methyl esters. The reaction followed a pseudo-first order reaction rate law with a rate constant of 9.6 x 10-4 min-1 and an activation energy of 57 kJ mol-1.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Sachin Kumar, Nishant Thakur, Km Abida, Ashish Kumar, Raj Kumar Gupta, Amjad Ali
Summary: The catalytic activities of Ni loaded Zn/CaO mixed oxides were studied for transesterification of triglycerides. The catalyst showed high conversion of biodiesel and could be reused for three consecutive runs. The physico-chemical properties of the catalyst were characterized by various techniques.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Chemistry, Applied
Avneet Kaur, Neha Bhardwaj, Amanpreet Kaur, Km Abida, Tejo Prakash Nagaraja, Amjad Ali, Ranjana Prakash
Summary: Two qHNMR-based equations were proposed for the quantification of epoxidized methyl esters (EMO) in the mixture of EMO and methylesters (MO), which showed acceptable agreement with HPLC analysis results. The validity of the method was confirmed using standard mixtures of MO and EMO with different molar concentrations.
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2021)