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Assessment of bioaugmentation efficiency of Penicillium chrysogenum and Aspergillus nudilans in bioremediation of crude oil spill soil 1
| Content Provider | Semantic Scholar |
|---|---|
| Author | Nrior, Renner Renner Mene, Gladys Barinua |
| Copyright Year | 2017 |
| Abstract | Assessment of bioaugmentation efficiency of two fungal species Penicillium chrysogenum and Aspergillus nudilans species on crude oil spill site (surface and underground soil) in Qio Tai, Ogoni land was evaluated. Penicillium chrysogenum and Aspergillus nudilans were used to augment the indigenous microorganisms present in the soil to speed up the degradation rate for a period of 28days at weekly interval (1, 7, 14, 21, and 28 days). The indigenous fungi isolates from the soil were identified to be of the following genera, Penicillium sp., Aspergillus sp., Histoplasma sp., Cladosporium sp., Mucor sp. and Alternaria sp. while the hydrocarbon utilizing bacteria were also identify to be Alcaligenes, Pseudomonas and Klebsiella. During the bioremediation process, it was observed that the augmenting organisms used were able to degrade the petroleum hydrocarbon in the soil. The initial Total Hydrocarbon Content (THC) of the un-augmented crude oil spill soil samples used as control (day 1) were: polluted surface soil (142422.14mg/kg), polluted underground soil (74779.29mg/kg); while on the day 28, the residual value were as follows: polluted soil with Penicillium chrysogenum (79279.28mg/kg) < polluted surface soil with Aspergillus nudilans (79422.14mg/kg) < surface soil control (92279.28mg/kg), polluted underground soil were as follows: polluted surface soil with Aspergillus nudilans (44636.43mg/kg) < polluted soil with Penicillium chrysogenum (47636.42mg/kg) < underground soil control (53993.59mg/kg). The percentage bioremediation rates of the fungal species for surface soil were as follows: polluted surface soil with Penicillium chrysogenum (36%) > polluted surface soil with Aspergillus nudilans (35%) > and control polluted surface soil (29%); while underground soil: polluted underground soil with Aspergillus nudilans (38%) > polluted underground soil with Penicillium chrysogenum (35%) > control polluted underground soil (27%). Comparatively, Penicillium chrysogenum (36%) express higher bioremediation potential than Aspergillus nudilans (35%) in the crude oil polluted surface soil while in the underground soil; Aspergillus nidulans (38%) had higher bioremediation potential than Penicillium chrysogenum (35%). This type of bioremediation shows that biologically cultured organisms aid the degradation of soil polluted with hydrocarbon and this method could be adopted for the remediation of a crude oil spill site. Summarily, bioremediation with the use of fungal isolate can effectively remove the petroleum hydrocarbons and shorten the remediation period, with the use of Penicillium chrysogenum for surface soil crude oil spill clean-up and Aspergillus nidulans for crude oil polluted underground soil bioremediation process. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.iosrjournals.org/iosr-jestft/papers/vol11-issue%208/Version-2/A1108020109.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
