Browsing by Author "Amosa, M. K."

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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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    Modelling and simulation of banana (Musa spp.) waste pyrolysis for bio-oil production
    (Biofuels (Taylor & Francis), 2018-11-07) Adeniyi, A. G.; Ighalo, Joshua O.; Amosa, M. K.
    Banana (Musa Spp.) is a widely cultivated fruit in tropical West Africa and it generates a lot of waste due to its single fruit production per lifecycle and relatively large plant size. The recovery of energy from biomass is achievable through different thermochemical process among which pyrolysis is a key technique. In this study, ASPEN Plus v8.8 was used to develop a steady state simulation model for the predicting of pyrolysis product yields for different banana (Musa Spp.) wastes. The results obtained revealed bio-oil yields of 26.7%, 39.9% and 35% from the pseudo-stem, peel and leaves respectively. The pseudo-stem gave the highest char yield while gas yields were similar for all samples pyrolysed. The results showed that the peel will give more oil yield than the other banana wastes. Consequently, all banana (Musa Spp.) wastes has been shown to be inherently more suitable for char optimised production processes due to their compositional characteristics.
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    SELECTIVE ADSORPTION OF Fe (II) OVER Zn (II) FROM PHARMACEUTICAL WASTEWATER
    (COAST JOURNAL OF THE SCHOOL OF SCIENCE, 2021-11) Aderibigbe, F. A.; Saka, H. B.; Amosa, M. K.; Idris, M. O; Bello, T. B; Olufowora, F. O; Adebayo,R. O.; Suleiman, S.
    Abstract This work focused on the utilization of termite mound clay and activated carbon prepared from groundnuts pod for the selective removal of Fe (II) over Zn (II) from Pharmaceutical Wastewater. The initial concentration of Fe (II) [0.46 mg/l] and Zn (II) [0.10mg/l] in the pharmaceutical wastewater were determined using Atomic Absorption Spectrophotometer (AAS). Scanning Electron Microscopy (SEM) technique, Fourier transforms infrared (FT-IR) spectroscopy, X-Ray uorescence (XRF) and X-ray diffraction (XRD) were conducted to investigate the adsorbent features. A preliminary experiment was carried out to determine the suitable adsorbent for optimization studies. Optimization study using Box Behnken experimental design in Response Surface Methodology were employed. The coded levels o selected includes adsorbent loading between 0.05- 0.15 g, temperatures 25 - 45 C and time 30 - 90 mins. o At Optimal condition, 6.6 pH value, the temperature of 25 C, contact time of 90 mins and adsorbent dosage of 0.1 g, the Fe (II) in the Pharmaceutical Wastewater was removed by 95.72 %. The Langmuir 2 adsorption isotherm model was found to have R of 0.9997. The adsorption capacity of the adsorbent was found to be 0.44 mg/g. Adsorption of Fe (II) onto groundnut pod activated carbon and termite mound clay 2 was best described by the pseudo rst order kinetic model (R = 1.000). The termite mound clay and the activated carbonized groundnuts pod shows an effective adsorption towards the removal of the targeted pollutant from the pharmaceutical wastewater. Keywords: adsorption, Box Behnken design, groundnuts pod, pharmaceutical wastewater, termite mound.