Browsing by Author "Jamil, Farrukh"

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Thermal degradation characteristics, kinetic and thermodynamic analyses of date palm surface fibers at different heating rates
(Elsevier BV, 2022-12) Inayat, Abrar; Jamil, Farrukh; Ahmed, Shams Forruque; Ayoub, Muhammad; Abdul, Peer Mohamed; Aslam, Muhammad; Mofijur, M; Khan, Zakir; Mustafa, Ahmad
The potential of the least-exploited date pam waste was presented as feedstock for bio-oil production. The surface fibers of the date palm are widely available as waste material in the Gulf region, the Middle East, and Africa. Chemical composition analysis and physiochemical characterization showed that surface fibers are valuable feedstock for energy production. Surface fibers were analyzed thermogravimetrically at different heating rates (10, 20, and 30 ◦C /min) in an inert atmosphere. Decomposition was carried out in three stages: dehydration, devolatilization, and solid combustion. Kinetic analysis was performed on the devolatilization region using the Coats–Redfern model–fitting method using twenty–one reaction mechanisms from four different solid-state re- action mechanisms. Two diffusion models: one–way transport (g(x) = α2 ) and Valensi equation (g(x) = α+(1-α) × ln(1-α)) showed the highest regression coefficient (R2 ) with the experimental data. The activation energy (Ea) and the pre-exponential factor (A) was estimated to be 91.40 kJ/mol and 1.59 × 103 –29.39 × 103 min− 1 , respectively. The kinetic parameters were found to be dependent on the heating rate. The surface fibers’ ther- modynamic parameters ΔH, ΔG, and ΔS were 80–97, 151–164, and − 0.17- − 0.18 kJ/mol, respectively. This indicates that the pyrolysis of surface fibers is endothermal and not spontaneous. Since there is not much experimental work on the pyrolysis of surface fibers available in the literature, the reported results are crucial for designing the pyrolysis process.
A unifying methodology for gasoline-grade biofuel from several renewable and sustainable gasoline additives
(Institution of Chemical Engineers, 2024-08) Abdellatief, Tamer M.M; Ershov, Mikhail A; Abdelkareem, Mohammad Ali; Mustafa, Ahmad; Jamil, Farrukh; Kapustin, Vladimir M; Makhova, Ulyana A; Chernysheva, Elena A; Savelenko, Vsevolod D; Klimov, Nikita A; Olabi, Abdul Ghani
To increase thermal efficiency and decrease greenhouse gas emissions, the research of fuel formulation and combustion processes for internal combustion engines has drawn attention from all across the world. The aim of the current study is divided into two subsections. The first of this section's two subsections is to thoroughly assess the impacts of physical and chemical properties of different mixtures of several gasoline octane boosters on low petroleum hydrocarbon products. Additionally, the creation of bio-gasoline fuels with high environmental octane ratings using various combinations of specific gasoline octane boosters is covered in the second of this section's two subsections. The gasoline additives included di-isobutylene (DIB), methyl tertiary butyl ether (MTBE), and isopropanol (IP). Furthermore, low petroleum gasoline fractions involved naphtha from natural gas condensate (N), light straight-run naphtha (LSRN), and hydrocracked gasoline (HG). In the current study, those renewable and sustainable gasoline additives and low petroleum hydrocarbon gasoline fractions were blended and examined as an innovative gasoline biofuel for gasoline engines for the first time. The experimental findings indicated that the octane number might be used to vary the antidetonation performance in the following order: ethanol> MTBE > Di-isobutylene > isopropanol > dimate > light straight-run naphtha > hydrocracked gasoline > naphtha from natural gas condensate > heavy straight run naphtha. Five different blends were applied and the physical and chemical characterizations of each blend separately in detail were investigated. The experimental results reported that octane numbers by research method for samples one, two, three, four, and five were 90.3, 92, 95.3, 98, and 100.2, respectively.