alexa Post-Remediation Assessment of Crude Oil Polluted Site at Kegbara-Dere Community, Gokana L.G.A. of Rivers State, Nigeria
ISSN: 2155-6199

Journal of Bioremediation & Biodegradation
Open Access

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Research Article

Post-Remediation Assessment of Crude Oil Polluted Site at Kegbara-Dere Community, Gokana L.G.A. of Rivers State, Nigeria

Tanee FBG* and E Albert
Department of Plant Science and Biotechnology, Faculty of Science, University of Port Harcourt, Rivers State, Nigeria
Corresponding Author : Dr. Tanee FBG
Department of Plant Science and Biotechnology
Faculty of Science, University of Port Harcourt
Rivers State, Nigeria
Received July 2, 2011; Accepted July 22, 2011; Published July 24, 2011
Citation: Tanee FBG, Albert E (2011) Post-Remediation Assessment of Crude Oil Polluted Site at Kegbara-Dere Community, Gokana L.G.A. of Rivers State, Nigeria. J Bioremed Biodegrad 2:122. doi:10.4172/2155-6199.1000122
Copyright: © 2011 Tanee FBG. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Post-remediation assessments of crude oil polluted sites at Kegbara-Dere community in Gokana Local Government Area of Rivers State, Nigeria were carried out to ascertain the degree of success of remediation work done by SPDC in the area in 2008. Soil samples were collected from 3 sites within the location viz; crude oil polluted unremediated site (A), crude oil polluted remediated site (B) and a control site of no pollution and remediation (C). Soil samples were collected at 3 soil depth levels of 0-5cm, 10-15cm and 20-25cm using soil auger and analysed for soil , conductivity, phosphate, nitrate, total organic carbon (TOC), total hydrocarbon content(THC) and total exchangeable cations (TEC). Soil pH and conductivity were obtained with a pH meter (Hanna Hi 8314) and conductivity meter (HACH Ecttesr microprocessor series) respectively. Total hydrocarbon content was measured by spectrophotometric method; total organic carbon content by oxidation method; nitrate content by Kjeldahl method, Phosphate content by ascorbic acid method and total exchangeable cations (Na + , K + , Mg 2+ and Ca 2+ ) by Atomic Absorption Spectrophometer method (AAS). Result showed no significant difference in the soil pH between and within sites. Soil conductivity, nitrate and phosphate improved significantly in the remediated site than the unremediated site. There was a drastic reduction in the total hydrocarbon content (THC) in the remediated site with the highest value of 100 mg/kg as against 350 mg/kg in the unremediated site. Total organic carbon (TOC) fluctuated between and within the 3 sites in the range of 3.63 - 4.11%. Ca 2+ was undetected in the remediated site especially at the 20- 25cm soil depth. This is an indication that the remediation carried out was successful.


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