IJCRR - 5(4), February, 2013
Pages: 01-09
ACCUMULATION OF HEAVY METALS BY PLEUROTUS OSTREATUS FROM SOILS OF METAL SCRAP SITES
Author: G.A. Boamponsem, A.K. Obeng, M. Osei-Kwateng, A.O. Badu
Category: General Sciences
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Abstract:
Heavy metal contamination of our ecosystem is one of the major environmental challenges facing our world today. Fungi have the ability to take out heavy metals from soils. Studies were conducted to determine the effectiveness of using Pleurotus ostreatus for the removal of copper (Cu), zinc (Zn), manganese (Mn) and iron (Fe) from soils of metal scrap sites. P. ostreatus was cultivated on soil samples using sawdust as a substrate. With soils of metal scrap sites, Fe recorded the highest level (10.740 – 68.500 mg/kg) and the least accumulated metal was Cu with a range of <0.02– 26.97 mg/kg. In both harvests, Fe was the most absorbed metal followed by Mn, Zn and Cu. In the first harvest, Fe absorption by P. ostreatus was 2.193 – 3.233 mg/kg and that of Mn, 0.486 – 0.580 mg/kg. Zn and Cu concentrations were in the range of 0.276 – 0.539 mg/kg and 0.0200 – 0.0290 mg/kg respectively. With the second harvest, levels of Fe and Mn in P. ostreatus ranged from 2.33 – 3.79 mg/kg and 0.499 – 0.713 mg/kg respectively. Zn concentration was 0.236 – 0.565 mg/kg and Cu recorded 0.0165 – 0.0820 mg/kg. With the control soil, concentrations of heavy metals in P. ostreatus were 0.0110 – 2.027 mg/kg in first and 0.0110 – 1.670 mg/kg in second harvest. P. ostreatus had a good potential for removing Fe, Mn, Zn and Cu from soils of metal scrap sites which contained these heavy metals in high concentrations above the WHO and USEPA standards. Pleurotus ostreatus can be used to amend heavy metal polluted sites.
Keywords: environmental pollution, mycoremediation, metal scrap site, Pleurotus oystreatus, heavy metals
Citation:
G.A. Boamponsem, A.K. Obeng, M. Osei-Kwateng, A.O. Badu. ACCUMULATION OF HEAVY METALS BY PLEUROTUS OSTREATUS FROM SOILS OF METAL SCRAP SITES International Journal of Current Research and Review. 5(4), February, 01-09
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