TARIMDA KULLANILAN ATRAZİNİN GİDERİMİNDE RHIZOPUS ARRHIZUS KULLANIM POTANSİYELİNİN BELİRLENMESİ

Öz

Tarımsal üretiminde kullanılan Atrazinin toprakta oluşan kalıntıları daha sonra yeraltı ve yerüstü sularına taşınmaktadır. Yüksek miktarlarda biriken Atrazin canlı organizmalar için toksik etki oluşturmaktadır. Atrazinle kirlenmiş sulu çevrelerin arıtımı önemli bir konu olmaktadır. Biyobirikim ve biyosorpsiyon bu tür kirleticilerin çevreden gideriminde çevre dostu bir yöntem olarak önerilmektedir. Bu çalışmanın amacı hem besiyerinde gelişmekte olan hem de kurutulmuş fungal biyokütlenin Atrazin giderim kapasitesini belirlemektir. Çalışmada Rhizopus arrhizus kültürünün biyobirikim ve biyosorpsiyonla Atrazin giderimine pH değerlerinin etkisi belirlenmiştir. Atrazin analizinde elektrokimyasal yöntem kullanılmıştır. Biyobirikim ve biyosorpsiyon sonunda en iyi Atrazin giderimi sırasıyla pH 4 ve pH 6'da gerçekleşmiştir. Gelişmekte olan R. arrhizus kültürü ve kurutulmuş fungal biyokütle sırasıyla %57.45 ve %63.16 Atrazin giderimi gerçekleştirmiştir. Bu çalışma sonuçlarına göre fungal biyokütle pestisitle kirlenmiş sıvı ortamlardan Atrazin giderimini kısa bir zaman aralığında gerçekleştirebilmiştir. Denemeler tarımsal üretiminde yaygın olarak kullanılan Atrazinin çevreye olumsuz etkilerini azaltmak için alternatif olarak fungal biyokütlenin kullanılabileceğini göstermiştir.

Anahtar Kelimeler

• Atrazin,fungus,tarım

DETERMINATION THE POTENTIAL USAGE OF RHIZOPUS ARRHIZUS FOR REMOVAL OF ATRAZINE USED IN AGRICULTURE

Öz

Atrazine is commonly used in agricultural activities. Atrazine residues occur in soil and then move to underground and surface waters. The higher amount of Atrazine is toxic for living organisms. The treatment of Atrazine contaminated aquoeous environment is an important issue. Bioaccumulation and biosorption is suggested as an eco-friendly way to remove this kind of pollutans in the environment. The aim of this study is to determine the Atrazine removal capacity of both growing Rhizopus arrhizus culture and dried fungal biomass. The effect of different pH values on Atrazine bioaccumulation and biosorption by R. arrhizus culture was determined in this study. Electrochemical methods were used for Atrazine analyse. The optimal pH for Atrazine removal was determined as 4 and 6 for bioaccumulation and biosorption, respectively. The growing R. arrhizus culture and dried R. arrhizus biomass removed 57.45% and 63.16% of Atrazine, respectively. According to the results of this study the fungal strain was effectively removed Atrazine from pesticide contaminated aquoeous solutions in a short time period. This study showed that the fungal systems can be used as alternative ways to reduce negative environmental impact of Atrazine.

Anahtar Kelimeler

• Atrazine,Fungus,tarım

Kaynakça

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