@article{ijebb2017523,
author={{Nnadozie, Prince C. and Odokuma, Lucky O.},
title={Biodegradability of Selected¨COil Spill Dispersants Commonly Used in Nigeria},
journal={International Journal of Environmental Bioremediation & Biodegradation},
volume={5},
number={2},
pages={49--59},
year={2017},
url={http://pubs.sciepub.com/ijebb/5/2/3},
issn={2333-8636},
abstract={The study investigates the biodegradation of two oil spill dispersants: ¡®Eco-Remover¡¯ which was obtained from the Nigerian National Petroleum Corporation (NNPC), Port Harcourt and a locally made unapproved ¡®Rigwash,¡¯ obtained from an industrial chemical store at Trans-Amadi, Port Harcourt. The setups were monitored at two weeks interval over 42-days period at room temperature (approximately 30¡ãC) on a static shake-flask system. The physico-chemical parameters of the samples were analyzed using standard chemical methods such as the atomic absorption spectrophotometry, Gas Chromatography (GC-FID) and the titrimetric technique. The result of primary biodegradation rate revealed that the mixture of Eco-Remover, seawater and crude oil (L2) was the highest degraded at 77.1%, followed by Eco-Remover and seawater combination (L1) at 4.39%. K1 (a mixture of seawater and Rigwash) and K2 (a mixture of crude oil, seawater and Rigwash) degraded at 1.22% and 1.19% respectively.  The result also indicated that K1 had an adverse effect on crude oil. Analytical Profile Index of bacterial isolates revealed a total of Five genera found growing on the samples. Among them, <i>Bacillus, Pseudomonas and Kocuria </i>were dominant and possess the potential to utilize dispersants and/or crude oil as the only carbon sources. The fungal isolates include: <i>Aspergillus niger</i> (18.0%), <i>Cladosporium carionii</i> (8.20%), <i>Fusarium oxytoca</i> (4.92%), <i>Myxomycete</i> spp. (13.1%), <i>Fusarium </i>spp. (3.28%), <i>Penicillium</i> spp. (3.28%), <i>Phoma</i> spp. (8.20%), <i>Pleurotus pulmorarius</i> (8.20%), <i>Rhizopus</i> spp. (3.28%), <i>Talaromyces flavus</i> (9.84%), <i>Trichoderma longibrachiatum</i> (6.56%), <i>T. polysporum </i>(4.92%) and <i>Verticillium</i> spp. (8.20%). Analysis of variance at confidence limit P ¡Ü 0.05 showed that there was significant difference in the biodegradation of each dispersant or their combination with crude oil. The implication of this study establishes that Eco-Remover is more biodegradable than Rigwash ¡®dispersant¡¯. However, there is need for further studies on their application in the field to confirm the outcome of this laboratory observations.},
doi={10.12691/ijebb-5-2-3}
publisher={Science and Education Publishing}
}