Browsing by Author "Arinkoola, A. O."

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    Optimization of bioremediation of cheese whey with the activity of klebsiella pneumonia using response surface methodology
    (U. P., 2013) Azeez, T. O.; Onukwuli, O. D.; Araromi, D. O.; Arinkoola, A. O.; Salam, K. K.; Iwuji, S. C.; Ejeta, K. O.; Dawodu, B. F.; Ayinde, K. A.; Nwacha, R.; Azeez, F. O.
    Response surface methodology was used to study the optimization of bioconversion of cheese whey to 2,3-Butanediol using Klebsiella pneumonia at room temperature. 3-Level factorial design was employed to correlate the bioremediation parameters with the biomass of K. pneumonia and concentration of 2,3-BD as response. Quadratic polynomial equation was developed to achieve optimal performance of the process. The result showed that the optimum condition for the bioremediation process in unaerated and airlifted batch reactors for concentration of cheese was 39.98g/L and 39.94g/L, and fermentation time was 95.5hours which resulted in biomass of k. pneumonia 1.4633mg/L and 3.6580mg/L, and 2,3-BD production of 10.696g/L and 17.997g/L respectively. 2,3-BD production in unaerated and airlifted batch reactors amounted to 36.88% and 62.06% respectively. The study has shown that k. pneumonia not only utilized cheese whey as a source of food and energy but optimally better for remediation of cheese whey in airlift batch reactors.
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    Performance evaluation of Mucuna solannie as a drilling fluid additive in water-base mud at cold temperature
    (Academic journals, 2020) Duru, U. I.; Onyejekwe, I. M.; Isu, D. O.; Uwaezuoke, N.; Arinkoola, A. O.
    Weighted and unweighted aqueous mud formulations from a biomaterial, at cold temperature of 5°C, were tested for their rheological characteristics. Based on API guidelines and recommended equipment for drilling fluid tests, the rheological properties of the formulations were determined. The muds exhibited pseudoplastic behaviour. The fluid loss volumes of the weighted and unweighted muds are 14 and 21 ml, respectively, while the filter cake thicknesses are 2.5 and 3 mm, respectively. The yield stresses of the weighted and unweighted muds are 209 and 159 lb/100 ft2 , respectively. Plastic viscosity of 42 cP for the weighted mud against 23 cP for the unweighted mud showed that the weighted mud has a better cutting lifting capacity if PV is used as an indicator. Mucuna solannie additive can also perform in cold temperature, and has the potential to be used in cold temperature drilling.