Tradescantia fluminensis Bitkisi Kullanılarak Sulardan Cd Uzaklaştırılmasına EDTA'nın Etkisi

Yıl 2018, Cilt: 8 Sayı: 2, 200 - 206, 31.12.2018

Seydahmet Çay , Mehmet Soner Engin

https://doi.org/10.31466/kfbd.493513

Öz

Ağır metaller ile kirlenmiş sular sürdürülebilir tarım ve çevre için büyük bir tehdittir. Bitkiler, beslenmeleri için ihtiyacı olan elementleri sulardan bünyelerine alma yeteneğine sahiptir ve bitkilerin bu yeteneği, kirlenmiş sulardan ağır metalleri uzaklaştırmak için kullanılabilir. Bu çalışmada, Tradescantia fluminensis bitkisinin Cd(II) biriktirme ve bünyesindeki dağılımı incelenmiş ve etilen diamintetrasetik asit (EDTA) 'nınşelatlaştırıcı madde olarak bunlara etkisi araştırılmıştır. Sonuçta, EDTA'nın ortama ilave edilmesinin Cd(II) birikiminde yüksek artışa neden olduğu ancak bitkinin biyokütlesini önemli ölçüde azalttığı görülmüştür. Ayrıca, EDTA'nın giderim etkinliğini değerlendirmek için Biriktirme Katsayısı (EC) ve Taşıma Faktörü (TF) değerleri hesaplanmıştır. Yüksek BCF (9.95±0.54-12.06±0.40) ve TF (1.03±0.11-1.27±0.10) değerlerine bakılarak, gövde ve yapraklardaki yüksek Cd birikimi, Tradescantia fluminensis bitkisinin Cd(II) ile kirlenmiş sular için yardımcı kimyasal EDTA kullanıldığında hiperakümülatör bitki potansiyeline sahip olduğunu sonucuna varılmıştır.

Anahtar Kelimeler

Tradescantia fluminensis, EDTA, Kadmiyum, su

Effect of EDTA on the removal Cd from artificially contaminated water by Tradescantia fluminensis

Öz

Heavy metal polluted water is a great threat to sustainable marine, agriculture and environment. Plants can have the naturalability to absorb essential metals in its tissues from water solution, and this ability of plants can be advantage to extract trace metals from the polluted water. In this study, Cd(II) accumulation and distribution in the Tradescantia fluminensis were investigated, with a focus on the role of ethylenediaminetetracetic acid (EDTA) as a chelating agent in hydroponics. The results showed that in plant, EDTA, addition to media produced the highest major increase in Cd(II) accumulation but significantly decreased biomass of the plant. Also the Enrichment Coefficient (EC) and Translocation Factor (TF) values were calculated to evaluate the removal efficiency of the EDTA. Based on higher BCF (9.95±0.54-12.06±0.40) and TF (1.03±0.11-1.27±0.10)  values, the high Cd(II) accumulation in the stems and leaves indicated that Tradescantia fluminensis has the potential of hyperaccumulation under EDTA enhanced treatments in removal for Cd(II) contaminated water.

Anahtar Kelimeler

Tradescantia fluminensis, cadmium, EDTA, water

Kaynakça

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