Article
Green & Sustainable Science & Technology
Zayed Al-Hamamre, Arwa Sandouqa, Basel Al-Saida, Reyad A. Shawabkeh, Mohammad Alnaief
Summary: A solid heterogeneous catalyst was prepared by impregnation of oil shale ash with KNO3 and subsequent calcination. The effects of different preparation conditions on waste cooking oil to biodiesel conversion were investigated. The characterization of the catalyst and the quantification of the produced biodiesel were performed using various analytical techniques.
Article
Green & Sustainable Science & Technology
Adeyinka S. Yusuff, Aman K. Bhonsle, Jayati Trivedi, Dinesh P. Bangwal, Lok P. Singh, Neeraj Atray
Summary: Coal fly ash-zinc oxide composite (CFA/ZnO) was developed and applied as a catalyst in transesterification of used cooking oil (UCO). After optimization, the catalyst showed high productivity in biodiesel synthesis and demonstrated good stability for multiple cycles of reuse.
Article
Green & Sustainable Science & Technology
Vitor Lima de Brito, Matheus Arrais Goncalves, Hiarla Cristina Lima dos Santos, Geraldo Narciso da Rocha, Leyvison Rafael Vieira da Conceicao
Summary: A new acid solid catalyst composed of MoO3 impregnated in Nb2O5 was synthesized and applied in methylic transesterification reaction of Waste Frying Oil (WFO) for biodiesel production. The catalyst was characterized and optimized reaction conditions were determined. The catalyst showed high reusability and stability, and the kinetic study provided important parameters for the reaction.
Article
Engineering, Environmental
Raheleh Talavari, Shokoufe Hosseini, G. R. Moradi
Summary: Renewable biofuels production helps alleviate concerns about the end of fossil fuels. Utilizing waste materials like travertine stone powder as a catalyst for biodiesel production demonstrates high efficiency and stability.
WASTE MANAGEMENT & RESEARCH
(2021)
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
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
Engineering, Environmental
Adeyinka Sikiru Yusuff, Afeez Olayinka Gbadamosi, Lekan Taofeek Popoola
Summary: This study developed a new eco-friendly solid catalyst from anthill-zinc modification for methanolysis of low-grade feedstock to produce biodiesel. The optimized conditions for the reaction resulted in a high biodiesel yield of 83.16%, showing good agreement with the predicted value. The catalyst exhibited better stability after being regenerated and reused for six cycles, indicating its potential for economical biofuel production from waste products.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Sujata Brahma, Bidangshri Basumatary, Siri Fung Basumatary, Bipul Das, Sanfaori Brahma, Samuel Lalthazuala Rokhum, Sanjay Basumatary
Summary: Efficient solid catalysts were prepared from Musa chinensis peel, trunk and rhizome, and successfully applied for biodiesel production from a quinary oil mixture. The catalyst exhibited a highly basic character with a micro-mesoporous and polycrystalline nature. The calcined M. chinensis peel catalyst showed the best performance, with optimized conditions yielding 95.82% biodiesel. The study also showed that the catalyst was highly effective, reusable, and produced biodiesel that conformed to international standards.
Article
Chemistry, Multidisciplinary
Ayoola Ayodeji, Chiekweta Gozirim, Agbede Cedar, Michael Oke, Babalola Philip
Summary: This research focuses on the transesterification of waste vegetable oil using calcined periwinkle shells and impregnated zinc oxide as catalysts. The results showed that calcined CaO catalyst obtained from periwinkle shells had a quality of 81.6%. The optimum biodiesel yield of 84.96% was achieved using the calcined CaO catalyst.
Article
Energy & Fuels
Maliheh Mahloujifar, Mohammadreza Mansournia
Summary: Utilizing orthorhombic phase KAlSiO4 and alkali metals-impregnated samples as catalysts can enhance the catalytic activity in the transesterification of sesame oil to biodiesel. Characterization analysis and optimization of experimental conditions revealed that the use of alkali metal impregnation method significantly increased the catalytic activity of KAlSiO4.
Article
Energy & Fuels
Basiru O. Yusuf, Sulayman A. Oladepo, Saheed A. Ganiyu
Summary: Bio-based fuels, like biodiesel, are gaining attention due to concerns about increasing energy consumption and global warming. Solid catalysts, such as zeolite-supported ZrO2 catalysts, are crucial in the production of green biodiesel as they can lower the cost of separation and reduce biodiesel costs. In this study, a series of desilicated zeolite-supported ZrO2 catalysts were successfully synthesized and used in the production of soybean oil biodiesel through transesterification. The desilicated zeolite-supported ZrO2 catalysts exhibited higher catalytic activity compared to the ZrO2/ZSM-5 catalyst, thanks to their larger pore volume, higher surface area, improved acidity, and more active sites. The optimized reaction conditions yielded biodiesel conversion rates of 90.1% and 97.84% for the ZrO2/ZSM-5 and desilicated zeolite-supported ZrO2 catalysts, respectively, with excellent stability and reusability for the latter.
Article
Environmental Sciences
Elamathi Vimali, Sathaiah Gunaseelan, Venkatachalam Chitra Devi, Sengottian Mothil, Muthu Arumugam, Balasubramaniem Ashokkumar, Innasi Muthu Ganesh Moorthy, Arivalagan Pugazhendhi, Perumal Varalakshmi
Summary: This study explores the use of marine brown macroalga as a sustainable feedstock for the production of biofuels and other bioproducts. The researchers successfully extracted lipids and algal oil from the macroalgae and produced biodiesel through transesterification using TiO2 as a catalyst. The study also examined the quality parameters of the biofuels, which met international fuel standards.
Article
Chemistry, Multidisciplinary
Ping Liu, Yulan Zhang
Summary: This study develops a machine learning model to predict biodiesel production from palm oil using the transesterification process. Ensemble decision tree-based algorithms were employed for modeling biodiesel production. The models utilize reaction time, methanol to oil molar ratio, and catalyst amount as input variables, and fatty acid methyl esters (FAME) production yield as the output. Performance comparison of the models showed that the Gradient Boosting Regression Tree (GBRT) model exhibited the highest accuracy and robustness in predicting biodiesel output. Optimization results indicated that a yield of 98.73% can be achieved at optimal operating factors.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Himmat Singh, Amjad Ali
Summary: A heterogeneous catalyst of K+ impregnated tungstophosphoric acid supported on graphene oxide was used for one pot esterification and transesterification of waste oil (WO). The catalyst structure was characterized by XRD, and its composition was confirmed by XPS analysis. TPD technique showed the presence of acidic and basic sites on the catalyst surface. Under optimized conditions, >98.5% biodiesel was produced within 1.5 h using a catalyst loading of 10 wt% (concerning oil), methanol: oil molar ratio of 9:1, and a reaction temperature of 65 degrees C. The catalyst could be recycled six times with metal levels in the reaction mixture below 2 ppm, and it showed activity even in the presence of free fatty acid and moisture contents.
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.
