Crude Oil

Effect of Crude Oil Contamination and Bioremediation with Fertilizer on Physicochemical Properties of Soil

The release of hydrocarbons into the environment whether accidentally or through human activities is a main cause of water and soil pollution. This study investigated the effect of crude oil contamination and fertilizer treatment on soil physicochemical properties. Unpolluted soil samples obtained from the bed of Ovia River, Benin City, Nigeria, were contaminated with crude oil, and thereafter remediated with NPK/urea fertilizer. A range of physicochemical parameters were measured in both soil samples.
AuthorName(s)
Francis Nosa ASEMOTA
Osahon Daniel ABU

Assessment of integrity of three dispersants and their toxicity to a Brackishwater Cichlid, Sarotherodon melanotheron (Cichlidae)

Key physical characteristics of three dispersants: Corexit 9527, NalcoD4106 and Goldcrew were studied to determine their integrity and toxicity to a brackishwater fish Sarotherodon melanotheron. The results showed that with regards to the physical properties, Corexit 9527 and to a large extent Goldcrew maintained their integrity while NalcoD4106 deteriorated. Observations of the 96h LC50 static bioassay showed that the toxicity of the dispersants to the fish in an increasing order is Corexit 9527 < Goldcrew < NalcoD4106.

AuthorName(s)
J. Rotimi
M.O. Omoigberale*
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