BIOREMEDIATION OF EFFLUENT FROM KADUNA REFINERY AND PETROCHEMICAL COMPANY USING CLADOSPORIUM SPECIES
BIOREMEDIATION OF EFFLUENT FROM KADUNA REFINERY AND PETROCHEMICAL COMPANY USING CLADOSPORIUM SPECIES
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Date
2017-04
Authors
KWAJI, Magdaline Joseph
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Abstract
This study investigated the potential bioremediation ability of Cladosporium species in hydrocarbon contaminated wastewater. Hydrocarbon contaminated wastewater samples were collected from the wastewater reservoir of the Kaduna Refinery and Petrochemical Company, Kaduna and the concentrations of the heavy metals, total hydrocarbon and physicochemical parameters of the samples were determined. Some of the physicochemical parameters of the hydrocarbon contaminated water such as Electrical conductivity (15.74-25.70μS/cm), TDS (8.00-8.50 mg/l), dissolved oxygen (0.60-0.75 mg/l) and BOD (0.20-0.52 mg/l) were lower than their respective WHO (2011) permissible limits while Ammonium nitrates (0.12-0.8 mg/l),Turbidity (2.63-10.30 NTU) and pH (7.40-12.00) were higher before bioremediation. The concentration of Zinc (1.97-2.86mg/l) and Copper (0.35-1.49 mg /l) were within their respective WHO (2011) acceptable limits while Manganese (0.65-2.0 mg/l), Cadmium (0.38-0.56mg/l) and Lead (14.42-15.09mg/l) exceeded the acceptable standards before bioremediation. Nickel was not detected in all the sampling points. The highest total hydrocarbon concentration observed before bioremediation was 1.87mg/l. Cladosporium species was isolated from the study area, identified and characterized on the basis of their macroscopic and microscopic morphologies using standard taxonomic guides. The Cladosporiumisolate was used in the bioremediation of the samples.The concentrations of some physicochemical parameters such as Electrical conductivity (25.70 -14.95 μS/cm), TDS (8.50-0.03 mg/l), D.O (0.75-0.30 mg/l) and pH (12.00-6.90)decreased after bioremediation withCladosporium species. A decrease was also observed in the concentration of some heavy metals such as Zinc (2.86-0 mg/l), Cadmium (0.56-0 mg/l), and Copper (1.49-0 mg/l) after bioremediation. The total hydrocarbon concentrationdecreased for both the sterilized (1.874-0.450 mg/l) and non-sterilized samples(1.874-0.703 mg/l) after bioremediation.However, the concentrations of Lead (14.19-33.98 mg/l) and Manganese (0.65-2.86 mg/l) increased after bioremediation.This study shows that Cladosporiumsphas potential for bioremediation of hydrocarbon contaminated wastewater
Description
A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIAIN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER DEGREE IN MICROBIOLOGY
DEPARTMENT OF MICROBIOLOGY
FACULTY OF LIFE SCIENCES
AHMADU BELLO UNIVERSITY,
ZARIA, NIGERIA
Keywords
BIOREMEDIATION,, EFFLUENT,, KADUNA REFINERY,, PETROCHEMICAL COMPANY,, CLADOSPORIUM SPECIES