Browsing by Author "Sherif Ishola Mustapha"

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    Green synthesis of zinc oxide nanoparticles for the removal of phenol from textile wastewater
    (Discover Chemical Engineering, 2024-08-24) Fatai Alade Aderibigbe; Sherif Ishola Mustapha; Ishaq Alhassan Mohammed; Tunmise Latifat Adewoye; Esther Olubunmi Babatunde; Habeebllah Ifeoluwa Aminullah; Kabiru Bab Muritala
    Abstract OPEN This study investigated the use of zinc oxide nanoparticles (ZnO NPs) as an adsorbent for removing total phenols from textile wastewater. The ZnO NPs were synthesized by reducing Zn(NO3)2⋅6H2O using an extract from Neem leaves (Azadirachta indica). Characterization of the adsorbent was performed using Fourier Transform Infrared (FTIR) spectros copy to identify functional group modifications, high-resolution scanning electron microscopy (HRSEM) for structural orientation, energy dispersive spectroscopy (EDS) for elemental analysis, and X-Ray diffraction analysis (XRD) for crys tallinity, revealing particle crystallinity around 200 nm. Adsorption experiments were conducted over contact times of 20–60 min, with adsorbent loadings between 0.2 and 1 g/100 mL, and temperatures ranging from 30 to 50 °C. Optimal phenol removal, achieving 55.93% (0.67 mg/L), occurred at 43.40 min, 33.70 °C, and an adsorbent dosage of 0.69 g/L of textile wastewater. The phenol adsorption process using ZnO NPs was exothermic, spontaneous, and required low energy, fitting well with the Langmuir isotherm and following a pseudo-second-order kinetic model. Keywords Neem · Pollutants · Nanoadsorbents · Adsorption · Crystallinity · Isotherms
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    Heterogeneous Catalysis of Second Generation Oil for Biodiesel Production: A Review
    (Wiley-VCHGmbH: ChemBioEngRev, 2021) Fatai A. Aderibigbe; Suleiman Shiru; Saka, H. B.; Amosa, M. K.; Sherif Ishola Mustapha; MohammedIAlhassan; Ayoade L. Adejumo; Morufudeen Abdulraheem; Owolabi, R. U.
    Abstract The demand for cleaner fuels has been on the rise lately, prompting researchers to explore alternative cleaner technologies to meet the growing demand. This has led to the introduction of renewable fuels such as bioethanol and biodiesel. Depending on the feedstock employed for production, renewable fuels can be divided into first, second, and third genera tion. Reliance on first generation biofuel feedstocks has led to inherent competition between foods versus fuels in the society in the last decade. Further technological prospects in research and develop ment have provided insight into the use of second generation biofuel feed-stocks from non-edible agricultural waste products, energy crops, and crop residues. Zeolites and modified zeolites as heterogeneous catalysts have been highly prospec tive for the transesterification process of these oils. Modified zeolite can act as a bi-functional catalyst because of its acidic and basic sites. Here, a review of transesterification reaction technology, zeolite and modified zeolite as a heterogeneous catalyst to generate biodiesel was discussed. Cur rent status, challenges and future prospects are also discussed. Keywords: Biodiesel, Heterogeneous catalyst, Homogeneous catalyst, Transesterification, Zeolite
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    PHENOL removal in refinery wastewater using mixed oxides prepared by green synthesis
    (Journal of Engg. Research, 2021-09-21) Fatai Alade Aderibigbe; Tunmise Latifat Adewoye; Sherif Ishola Mustapha; Ishaq Alhassan Mohammed; Harvis Bamidele Saka; Mutiu Kolade Amosa; Ayoade Lateef Adejumo; Rasheed Uthman Owolabi; Shalom Boluwatife James
    Mixed solid oxides are known for their excellent catalytic property and applications in environmental remediation. This study presents a green-synthesis route for magnesium oxide–titanium oxide, a mixed oxide demonstrated to possess high performance of phenol removal from hydrocarbon refinery process wastewater. Mixed oxide (MgO-TiO2) was prepared by using the whole extract from leaves of Piliostigma Thonningii as a reducing agent. A structural attribute of the mixed oxide was investigated using X-ray Diffractometer, High Resolution Scanning Electronic Microscopy and Energy Dispersive X-ray. Petroleum refinery raw wastewater having a phenol concentration of 19.961 mg/L was treated using green-synthesized mixed oxide. Adsorptive phenols removal up to 99.5% was achieved with a dosage of 0.04 g/100 mL at a temperature of 35 °C, and a contact time of 1.167 h. By this, the treated water meets the standard acceptable phenol concentration (0.1 mg/L) in wastewater of hydrocarbon refinery. Keywords: Green synthesis; Magnesium oxide; Mixed oxide; Phenol; Process wastewater; Titanium oxide.
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    Qualitative role of heterogeneous catalysts in biodiesel production from Jatropha curcas oil
    (Biofuel Research Journal 26 (2020) 1159-1169, 2020) Fatai Alade Aderibigbe; Sherif Ishola Mustapha; Tunmise Latifat Adewoye; Ishaq Alhassan Mohammed; Adebola Bukola Gbadegesin; Faith Emmanuel Niyi; Opeyemi Idowu Olowu; Akinpelumi Gabriel Soretire; Harvis Bamidele Saka
    Biodiesel properties are in general attributed to the composition and properties of the oil feedstock used, overlooking the possible impacts of the catalyst preparation details. In light of that, the impacts of different catalyst preparation techniques alongside those of different support materials on the yield, composition, and fuel properties of biodiesels produced from the same oil feedstock were investigated. More specifically, tri-metallic (Fe-Co-Ni) catalystwas synthesized through two different techniques (green synthesis and wet impregnation) using MgO orZnOas support material. The generated catalyst pairs, i.e., Fe-Co-Ni/MgOand Fe-Co Ni/ZnOprepared by wet impregnation and Fe-Co-Ni-MgOand Fe-Co-Ni-ZnOprepared by green synthesis(using leaf extracts) were used in the transesterification process of Jatropha curcasoil. Detailed morphological properties, composition, thermal stability, crystalline nature, and functional groups characterization of the catalysts were also carried out. UsingBox-Behnken Design response surface methodology, it was found that the green-synthesized Fe-Co-Ni-MgOcatalyst resulted inthe highest biodieselyield of 97.9%. More importantly, the fatty acid methyl ester (FAME)profiles of the biodieselsproduced using the four catalysts as well as their respective fuel properties were different in spite ofusing thesame oilfeedstock.
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    Waste Cooking Oil Conversion to Biodiesel Using Solid Bifunctional Catalysts
    (Wiley-VCH GmbH: ChemBioEng Rev. 2023,, 2023) Fatai Alade Aderibigbe; Harvis Bamidele Saka; Sherif Ishola Mustapha; Mutiu Kolade Amosa; Suleiman Shiru; Idowu Abdulfatai Tijani; Esther Oluwabunmi Babatunde; Bisola Taibat Bello
    Abstract The draining of fossil fuels and their toxic influence on the environment has prompted the need for alternative fuels known as biofuels. Of the various types of biofuel, biodiesel has attracted wide interest in the world today since it promotes carbon neutral ity. The transesterification and interesterification process remains the most widely used process route for biodiesel production. In this review, the perfor mance efficiency of solid base, solid acid, and bi functional solid acid-base catalysts for biodiesel pro duction from waste cooking oil is considered. In particular, the benefit of exploring the biomass derived acid-base heterogeneous bifunctional cata lysts, current status, and future prospects for biodie sel production from waste cooking oil are eluci dated. Keywords: Acid-base bifunctional catalysts, Biodiesel, Biomass, Solid catalyst, Waste cooking oil