Browsing by Author "Obijiaku, J. C."

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    Curve-fitting of bioremediation of polycyclic aromatic hydrocarbons (PAHs) by co-composting using roost manure
    (EverScience Publications, 2016) Kamalu, C. I. O.; Nwakaudu, A. A.; Onyelucheya, O. E.; Uzondu, F. N.; Kamen, F. L.; Nwakaudu, M. S.; Obijiaku, J. C.
    In this work, ten polluted sites with oil were obtained from Niger Delta, mixed homogenously with compost manure and sent to FUGRO International Laboratory Port Harcourt Nigeria, for bioremediation experiments and analyses. The 4800g sample was divided into twelve (12) equal parts of 400g for bioremediation; 6 parts for the experiments and 6 parts for the control. Particular ringed PAH was isolatedly tested for bioremediation for each of the five ringed PAHs (1 to 5 rings) and the 800g sample was used for respiration test of compost incubation. It was found that the efficiency of bioremediation increased from one to three rings and decreased exponentially for the rest of the rings, showing that bioremediation is not effective for higher ring PAHs. It was also found that bioremediation yields best (optimum) result between two and three ringed PAHs. The respiration of the compost microorganisms improved during incubation by more than two-third i.e 67.7%. The result of this work can be used in bioremediation studies when trying to isolate or choose a particular ringed PAHs for such bioremediation jobs.
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    Modeling the kinetics of photosynthetic chemistry
    (U. P., 2015-11) Kamalu, C. I. O.; Nwakaudu, M. S.; Obijiaku, J. C.; Okwara, C. A.; Kamen, F. L.; Uzondu, F. N.; Osoka, E. C.
    In this work, the chemical kinetics of photosynthesis was extensively explored. Kinetic models were established. Existing data from the internet were used for the validation of the models. It was observed that the models are real and natural as they follow the growth profile nature of photosynthetic release, together with the uptake of oxygen and carbon dioxide respectively. The models actually conform to what was found in literature. Therefore photosynthetic activities could be studied using natural growth models, in conjunction with the specificities of photosynthetic phenomena. This work can be employed in the growth study of plants in agriculture, carbon cycle, and perhaps ozone layer depletion or carbon sequestration.