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
Engineering, Chemical
Jichao Sun, Hewei Yu, Peisen Zhang, Gaoyu Qi, Xiuxiu Chen, Xiaohui Liang, Hongyu Si
Summary: This study synthesized a CaO-CeO2/slag solid base catalyst using steel slag as a carrier for the transesterification of palm oil into FAMEs. The catalyst showed outstanding performance and could be reused for at least three cycles, making it a potential cost-effective and environmentally friendly option for biodiesel production.
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
Thermodynamics
Majid Mohadesi, Babak Aghel, Ashkan Gouran, Mohammad Hamed Razmehgir
Summary: This study explores the use of clay/CaO catalyst for producing biodiesel from waste cooking oil. The catalyst is synthesized from clay and calcium oxide, resulting in a high surface area and amorphous silica structure. Under optimized conditions, the conversion rate of biodiesel reaches 97.16%. The prepared catalyst can be reused up to 5 times, making it an effective and cost-efficient option for biodiesel production.
Article
Energy & Fuels
Ali Sarosh Khawaja, Muhammad Ayman Zaheer, Ali Ahmad, Asif Ali Mirani, Zulfiqar Ali
Summary: Factors such as higher fuel prices, limited fossil fuel resources, and the negative impact of fossil fuels on global warming have made the search for an unconventional sustainable energy source necessary. Biodiesel has gained attention due to its similar properties to fossil fuels and its synthesis from edible and non-edible oils. The heterogeneous catalyst calcium oxide has shown potential for sustainable biodiesel production due to its abundance, low cost, and high activity. Nanotechnology can further improve the catalytic activity of calcium oxide, making it a promising catalyst for biodiesel production.
Article
Energy & Fuels
Antonius Nova Rahadi, Jeremia Jonathan Martinus, Shella Permatasari Santoso, Maria Yuliana, Alfin Kurniawan, Chintya Gunarto, Sandy Budi Hartono, Felycia Edi Soetaredjo, Suryadi Ismadji
Summary: The novel catalyst Cu/DS-HMS-NH2 can convert low-quality vegetable oils into biodiesel directly, achieving a high yield without the need for pretreatment, demonstrating its potential utility.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Energy & Fuels
Yadessa Gonfa Keneni, Jorge Mario Marchetti
Summary: The study focused on the butanolysis of Jatropha oil using glycerol enriched non-calcined calcium oxide as a catalyst. The research found that reaction temperature and butanol: oil molar ratio significantly influenced the conversion of Jatropha oil and the yield of fatty acid butyl esters, with temperature being a key factor. Quadratic models were found to be more suitable for optimizing the butanolysis process. The study suggested that the catalyst used can be a good alternative for biodiesel production and recommended further studies to enhance the reaction process.
Article
Green & Sustainable Science & Technology
Yujiao Zhang, Shengli Niu, Kuihua Han, Yingjie Li, Chunmei Lu
Summary: The composite catalyst 0.4-SrO-CaO-Al2O3 shows the best catalytic capability in transesterification of palm oil with methanol to produc biodiesel, achieving a FAME yield of 98.16%. The stability and reusability of the catalyst are greatly enhanced by reducing leaching out of active species. The modification method for SrO-CaO-Al2O3 is feasible for enhancing catalytic stability in transesterification.
Article
Energy & Fuels
Fekadu Ashine, Zebene Kiflie, Sundramurthy Venkatesa Prabhu, Belachew Zegale Tizazu, Venkatramanan Varadharajan, Manivasagan Rajasimman, Sang-Woo Joo, Yasser Vasseghian, Mani Jayakumar
Summary: The present study optimized the process of biodiesel production from Argemone mexicana oil using calcium oxide as a catalyst derived from chicken eggshells. The catalyst was characterized and the parameters were optimized through response surface methodology, resulting in a high yield of biodiesel. Non-statistical techniques were used to analyze the optimal values, and the obtained biodiesel was characterized using spectroscopic techniques.
Article
Green & Sustainable Science & Technology
Adeyinka S. Yusuff, Aman K. Bhonsle, Dinesh P. Bangwal, Neeraj Atray
Summary: A highly efficient barium-modified zeolite (Ba-ZEL) catalyst was developed through optimizing thermal treatment temperature, biodiesel production process conditions, and catalyst performance, leading to the maximum biodiesel yield meeting the standard requirements under the optimum conditions.
Article
Green & Sustainable Science & Technology
Fahimeh Esmi, Ajay K. Dalai, Yongfeng Hu
Summary: Functionalized mesoporous aluminosilicates were synthesized using two different techniques of post and direct functionalization. Heteropoly acid was immobilized on the carriers and their performance for transesterification reaction was studied. The catalysts were analyzed for their properties and the direct functionalized catalyst with amino group showed higher catalytic activity and reusability compared to the one with thiol group.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Applied
Bheechanat Duangdee, Dussadee Rattanaphra, Sasikarn Nuchdang, Anusith Thanapimmetha, Maythee Saisriyoot, Penjit Srinophakun
Summary: Solid mixed rare earth catalysts (MREEs) were synthesized by co-precipitation at different pH values. The catalysts co-precipitated at pH 12 showed high contents of active elements for facilitating esterification and transesterification reactions. The catalyst synthesized at pH 12 and calcined at 300 degrees C exhibited high catalytic activity and conversion rates in both esterification and transesterification reactions.
JOURNAL OF RARE EARTHS
(2023)
Article
Energy & Fuels
Elijah Olawale Ajala, Mary Adejoke Ajala, Temitope Elizabeth Odetoye, Fatai Alade Aderibigbe, Hammed Olalekan Osanyinpeju, Mufutau Ayanniyi Ayanshola
Summary: Synthesis of heterogeneous chicken eggshell catalysts at different temperatures was studied for palm kernel biodiesel production. The CEC900 catalyst showed the highest chemical composition, surface area, and optimal parameters for producing biodiesel. The catalytic activity decreased slightly after repeated usage, suggesting CEC is a cost-effective catalyst option.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Review
Engineering, Environmental
Nabilah Atiqah Zul, Shangeetha Ganesan, Tuan Sherwyn Hamidon, Wen-Da Oh, M. Hazwan Hussin
Summary: The high cost of biodiesel production is a major obstacle, leading to interest in using waste materials as catalysts for ester exchange. Heterogeneous catalysts, particularly CaO, show promise for enhancing catalytic activity and durability in the transesterification process. This approach not only reduces production costs but also has environmental benefits by utilizing waste materials.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Eliane Dahdah, Jane Estephane, Lena Moussa Chalouhi, Safa Sammoury, Bilal El Khoury, Cedric Gennequin, Edmond Abi-Aad, Samer Aouad
Summary: The production of biodiesel from refined sunflower vegetable oil over basic CaO/ZSM-5 catalysts showed high efficiency and stability, attributed to the active basic sites generated following CaO addition.
CHEMICAL ENGINEERING & TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Nurul Nadiah Abd Razak, Patrick Cognet, Yolande Peres, Lai Ti Gew, Mohamed Kheireddine Aroua
Summary: In this study, glycerol dioelate (GDO) was synthesized using a continuous flow packed bed millireactor catalyzed by immobilized lipase. The results showed that high conversion and selectivity of GDO were achieved under appropriate conditions. Hydrodynamic studies indicated that the esterification reaction was kinetically controlled and the immobilized lipase maintained good activity and reusability.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Environmental Sciences
Elsa Cousin, Kritsana Namhaed, Yolande Peres, Patrick Cognet, Michel Delmas, Heri Hermansyah, Misri Gozan, Peter Adeniyi Alaba, Mohamed Kheireddine Aroua
Summary: This review introduces the chemical and biological routes for furfural production and discusses the different methods to improve the synthesis process. It highlights the effectiveness of pretreatment processes, the combination of catalyst and solvent systems, and the use of microwave heating to enhance furfural yields and selectivity. The state of the art in industrial processes, such as the MTC and CIMV processes, is also discussed. Future research should focus on scaling-up and biological techniques to make furfural production commercially viable.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Ahmed Halilu, Mohamed Kamel Hadj-Kali, Mohd Ali Hashim, Rozita Yusoff, Mohamed Kheireddine Aroua
Summary: This study synthesized a DEACl-DEA electrolyte for sustainable activation of CO2 through electroreduction process. In the DEACl-DEA (1:3) electrolyte, CO2 electroreduction to CO2 center dot- was achieved at a low potential with high faradaic efficiency and ambient CO2 capture capacity. The study also revealed the dual-functional CO2 sorption mechanism of the DEACl-DEA electrolyte through electrochemical impedance spectroscopy and COSMO-RS analysis, and proposed a criterion for using deep eutectic electrolytes in sustainable CO2 electroreduction.
Article
Chemistry, Physical
Luqman H. Hashim, Ahmed Halilu, Yahaya Balarabe Umar, Mohd Rafie Bin Johan, Mohamed Kheireddine Aroua, Paramita Koley, Suresh K. Bhargava
Summary: This study focuses on the design and synthesis of highly active bifunctional catalysts for the conversion of furfural to furfuryl acetate. The catalysts with lower lattice strain exhibited higher catalytic activity.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
A. Arifutzzaman, Intan Najihah Musa, Mohamed Kheireddine Aroua, R. Saidur
Summary: In recent decades, capturing carbon has become a priority in addressing climate change. This paper explores the use of MXenes and activated carbon as CO2 adsorbents, evaluating their performance through various tests and analysis. The AC/MXene sandwich adsorbent showed the highest CO2 adsorption capacity with a significant improvement over AC. The results highlight the potential of emerging nanomaterials in large-scale CO2 capture applications.
JOURNAL OF CO2 UTILIZATION
(2023)
Review
Chemistry, Physical
Nadeem Hussain Solangi, Farihahusnah Hussin, Amna Anjum, Nizamuddin Sabzoi, Shaukat Ali Mazari, Nabisab Mujawar Mubarak, Mohamed Kheireddine Aroua, M. T. H. Siddiqui, Sundus Saeed Qureshi
Summary: Ionic liquids (ILs) are well-known for their CO2 capture properties. The combination of ILs with various materials reduces the problem of high viscosity of ILs. Encapsulated ionic liquid (ENIL) systems can overcome the low CO2 absorption rate and difficulties in solvent regeneration. This review comprehensively evaluates recent literature on ENILs for CO2 capture, including preparation, characterization, reaction kinetics, solubility, selectivity, and regeneration studies.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Nur Syahirah Mohamed Hatta, Farihahusnah Hussin, Lai Ti Gew, Mohamed Kheireddine Aroua
Summary: This study investigates the use of egg white as a surface modifier to enhance the adsorption capacity of palm shell activated carbon for CO2 capture. The adsorbent exhibits significant increase in CO2 uptake with the addition of 10 wt.% egg white. The introduction of amide functional group of egg white on the surfaces of activated carbon contributes to the enhanced CO2 adsorption capacity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Mohd Azlan Kassim, Nor Afifah Sulaiman, Rozita Yusoff, Mohamed Kheireddine Aroua
Summary: Carbon dioxide (CO2) absorption in a non-aqueous solution was investigated using a deep eutectic solvent (DES) of choline hydroxide and polyamines, combined with non-aqueous solvents such as sulfolane and dimethylsulfoxide (DMSO). The study found that the 2M ChOH:TETA-DMSO solution had the highest CO2 loading capacity among the tested solutions. The absorption capacity increased with pressure and decreased with temperature, indicating the potential of using a DES polyamine mixed with a non-aqueous solvent for CO2 capture.
Article
Green & Sustainable Science & Technology
Farihahusnah Hussin, Nur Nadira Hazani, Mohamed Kheireddine Aroua
Summary: The aim of this study was to prepare a carbon pellet with excellent surface properties for CO2 capture using low-cost material and a green process. A chemical activation method was introduced by modifying the pellet with potassium acetate to enhance its surface properties. The modified carbon pellet showed remarkable changes in surface morphology and increased CO2 adsorption capacity due to the presence of oxygen-containing functional groups. The results suggest that the carbon pellet modified with potassium acetate is suitable for CO2 adsorption.
Review
Chemistry, Multidisciplinary
Farihahusnah Hussin, Siti Aqilah Nadhirah Md Rahim, Mohamed Kheireddine Aroua, Shaukat Ali Mazari
Summary: Climate change and global warming are crucial environmental issues that require global action. Carbon capture technology and machine learning play important roles in reducing CO2 emissions and addressing climate change. Research and development in this field are crucial for future advancements and combating the challenges of climate change.
JOURNAL OF CO2 UTILIZATION
(2023)
Review
Chemistry, Applied
Farihahusnah Hussin, Nur Nadira Hazani, Munawar Khalil, Mohamed Kheireddine Aroua
Summary: This article provides a systematic review of hydrothermal technology and the life cycle assessment of hydrothermal biomass conversion. The study found that there is limited research on the environmental and economic impacts of hydrothermal biomass conversion, highlighting the need for environmental impact studies to demonstrate the benefits of biomass hydrothermal processing.
FUEL PROCESSING TECHNOLOGY
(2023)
Review
Engineering, Chemical
Kay Yi Chook, Mohamed Kheireddine Aroua, Lai Ti Gew
Summary: In this study, the advancements and breakthroughs in emerging biocatalysis reactor technologies over the past decade were documented. The focus was on the production of glycerides using enzyme biocatalysis. Reaction parameters and optimization strategies, such as temperature and residence time, were reviewed and discussed. The selection of reactor type and agitator was found to be crucial for enzyme activity. The conversion of enzymes from waste streams into functional products could enhance the sustainability of biocatalysis. This work serves as a stepping stone for the biocatalysis industry, providing a reference for those interested in exploring this field.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Chee Yung Pang, Gulnaziya Issabayeva, Yean Ling Pang, Mee Chu Wong, Mohamed Kheireddine Aroua
Summary: The demand for zinc oxide increased significantly during the Covid-19 pandemic, as gloves became essential in daily life. This study successfully demonstrated the removal and recovery of zinc ions from real industrial wastewater, using an adsorption-desorption-chemical precipitation approach, to produce usable secondary zinc oxide.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Engineering, Electrical & Electronic
Md Shafiullah, Saidur Rahman, Binash Imteyaz, Mohamed Kheireddine Aroua, Md Ismail Hossain, Syed Masiur Rahman
Summary: The Southeast Asian region is increasingly interested in smart city initiatives, with a focus on promoting energy efficiency, reducing greenhouse gas emissions, and implementing renewable energy targets. However, challenges related to leadership, governance, citizen support, and investment, among others, arise in implementing smart energy systems. This article discusses the concept of smart cities, highlights different types of initiatives in Southeast Asian countries, and explores the challenges and potential solutions for implementing smart energy systems.
Article
Engineering, Chemical
Misri Gozan, Imam Paryanto, Muhammad Arif Darmawan, Muhammad Sahlan, Heri Hermansyah, Eriawan Rismana, Alfan Danny Arbianto, Tirto Prakoso, Mohamed Kheireddine Aroua, Patrick Cognet
Summary: This study predicts the formation of precipitates in B20 fuel based on the content of monoglycerides in biodiesel. The results show that higher monoglyceride content leads to more accumulation of precipitates. This is important for estimating the frequency of sludge removal in storage tanks.
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)
