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You are here: Home » Latest Issue » Volume 16, 2021 - Number 1 » BIODEGRADATION EFFECTS OF CRUDE OIL-POLLUTED WATER USING BACTERIA ISOLATES FROM SUNFLOWER HUSK ON FISH GROWTH: PARAMETRIC OPTIMIZATION USING TAGUCHI APPROACH, Carpathian Journal of Earth and Environmental Sciences, February 2021, Vol. 16, No. 1, p. 211 – 222; DOI:10.26471/cjees/2021/016/168


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Lekan Taofeek POPOOLA1* & Adeyinka Sikiru YUSUFF1
1*Unit Operation and Material Science Laboratory, Chemical and Petroleum Engineering Department, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria, Corresponding author: ltpopoola@abuad.edu.ng, +2348062397669


BIODEGRADATION EFFECTS OF CRUDE OIL-POLLUTED WATER USING BACTERIA ISOLATES FROM SUNFLOWER HUSK ON FISH GROWTH: PARAMETRIC OPTIMIZATION USING TAGUCHI APPROACH, Carpathian Journal of Earth and Environmental Sciences, February 2021, Vol. 16, No. 1, p. 211 – 222; DOI:10.26471/cjees/2021/016/168

Full text

Abstract:

Bacteria isolates from sunflower husk were applied for bioremediation of crude oil-contaminated water.Fish weight was monitored in bioremediated water by gravimetric method. Taguchi design matrix was employed for process parameters optimization, which include reaction temperature (20-60oC), inoculums concentration (20-100 CFU/mL), crude oil concentration (50-250 mL/L), reaction time (1-5 hrs), NH4Cl concentration (20-100 mg/L) and K3PO4 concentration (10-50 mg/L) for crude oil degradation and fish growth. Bacteria isolates were characterized by biochemical tests. Water samples were characterized using gas chromatograph-mass spectroscopy (GC-MS), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and carbon-hydrogen-nitrogen (CHN) analysis. Results revealed optimum crude oil degradation of 96.59 ± 0.03 % for 50 mL/L of crude oil in water supplemented with 100 CFU/mL inoculums, 10 mg/L K3PO4 and 10 mg/L NH4Cl at 60oC reaction temperature and 4 hrs reaction time. Also, optimum fish growth of 93.14 ± 0.04 % was achieved in 50 mL/L of crude oil in solution supplemented with 80 CFU/mL inoculums, 10 mg/L K3PO4 and 20 mg/L NH4Cl at 60oC reaction temperature and 5 hrs reaction time. Conclusively, characterization revealed degradation of hydrocarbons in crude oil-contaminated water from heavy into light fractions by the bacteria isolates.



Keyword: Bacteria isolates, crude oil, fish growth, optimization, polluted water


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