Nazime Mercan DOĞAN, Eda EVGEN, Gülümser Acar DOĞANLI, Göksel DOĞAN

Pseudomonas mendocina DS0601-FX-P22’nın Krom İndirgemesi Üzerine Farklı Metal ve Ağır Metallerin Rolü

B u çalışmada, Mn2+, Cu2+, Fe2+, Ba2+, Al3+, Ni2+, Co2+, Zn2+, Cd2+ and Pb2+ gibi farklı metal iyonlarının Pseudomonas mendocina DS0601-FX-P22 tarafından bakteriyel krom indirgeme üzerine etkisi araştırılmıştır. İki farklı krom derişiminde çalışılmıştır 15 mg/L ve 25 mg/L Cr VI . Cu2+ ve Fe2+ gibi metal iyonlarının varlığında bakterinin Cr VI indirgeme yeteneği artmış, Ba2+ and Ni2+ gibi metal iyonlarının varlığında önemli derecede inhibe olmuştur. Ayrıca, P. mendocina DS0601-FX-P22 bakterisinin her iki Cr VI derişimi 15 ve 25 mg/L için Cr VI indirgemesinde en etkili metal iyonu Cu2+ olarak bulunmuştur

Anahtar Kelimeler:

Biyoremediasyon, Krom indirgeme, Ağır metal, Pseudomonas

The Role of Different Metal and Heavy Metal Ions on Chromium Reduction by Pseudomonas mendocina DS0601- FX-P22

In this study, the effects of different metal ions such as Mn2+, Cu2+, Fe2+, Ba2+, Al3+, Ni2+, Co2+, Zn2+, Cd2+ and Pb2+ on the bacterial chromium reduction by Pseudomonas mendocina DS0601-FX-P22 were investigated. Two dif- ferent initial chromium concentrations 15 mg/L and 25 mg/L Cr VI were studied. The Cr VI reduction ability of the bacterium increased in the presence of metal ions like Cu2+ and Fe2+ and was significantly inhibited in the presence of metal ions like Ba2+ and Ni2+. Also, Cu2+ was the most efficient metal ion at Cr VI reduction for both Cr VI concentration 15 and 25 mg/L in P. mendocina DS0601-FX-P22 bacterium.

Keywords:

Bioremediation, Chromate reduction, Heavy metal, Pseudomonas,

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