Sonay SÖZÜDOĞRU, Satea M. OMAR, Sadık USTA

TOPRAKLARDA BOR ADSORPSİYONU

Bu araştırma farklı özelliklere sahip topraklar ın bor adsorpsiyon izotermlerini incelemek üzere yürütülmüştür. Langmuir ve Freundlich adsorpsiyon izotermi modellerine göre değerlendirilen B adsorpsiyonunda, Langmuir modelinin düşük B konsantrasyonlan için geçerli oldu ğu, Freundlich modelinin ise hem düşük, hem de yüksek konsantrasyonlarda geçerli oldu ğu saptanmıştır. Langmuir b ve Freundlich k sabitleri ile kil kapsam ı ve kalyon değişim kapasitesi aras ında sırasıyla; % 1 ve % 5 düzeyinde önemli bir ili şki bulunmuştur. Langmuir K sabiti ile organik madde aras ında % 1 düzeyinde önemli bir ilişki tespit edilmiştir. Langmuir b ve Freundlich k de ğerleri ile pH arasında % 1, Langmuir K değeri ile ise % 5 düzeyinde negatif bir ilişki olduğu belirlenmiştir.

Anahtar Kelimeler:

Bor, Langmuir adsorpsiyon izotermi, Freundlich adsorpsiyon izotermi.

BORON ADSORPTION IN SOILS

The objective of this study was to investigate the effect of soil properties on Boron adsorption. Boron sorption in soils confirmed to Langmuir adsorption isotherm, but only over limited concentration ranges. On the other hand, the Ferundlich adsorption isotherm was applicable over the entire B concentration range for all soils. The Langmuir b and Freundlich k values were highly correlated with both clay content significant at 1 % level , pH significant at 1 % level but negative and cation exchange capacity significant at 5 % level . Langmuir K values were significantly correlated with organic matter at 1 % level and pH at 5 % level and negative.

Keywords:

Boron, Langmuir adsorption isotherm, Freundlich adsorption isotherm.,

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