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POLİAMİN -POLİÜRE REÇİNESİNİN SENTEZLENMESİ VE Cd(II) İYONLARININ SULU ÇÖZELTİLERDEN ADSORPSİYONLA GİDERİLMESİNDE KULLANILMASI

SYNTHESIS OF POLYAMINE-POLYUREA RESIN AND USING FOR REMOVAL OF CADMIUM (II) IONS FROM AQUEOUS SOLUTIONS

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Abstract (2. Language): 
Polyamine-polyurea chelating resin was synthesized from TDI(toluendiizosiyanat) and TETA(Trietilentetraamin) and it was used in removal of cadmium (II) ions from aqueous solutions by adsorption. By using batch method, the effect of pH, adsorbent dosage, contact time and initial concentration on adsorption were investigated. The adsorbent exhibited good sorption potential for Cd (II) ions in these conditions: 60 minutes of contact time in pH:6,0 with adsorbent dosage 0,5 g/100 mL. Adsorption results were applied to Langmiur and Freundlich isotherm equations. As results of isotherm investigations, the adsorption results were fitted well to Langmiur isotherm adsorption model which describes chemisorption with correlation coefficient of 0,998. Maxsimum adsorption capacity 7,305 mg/g was determined. The results of the experiments show that the resin has high adsorbing capacity for Cd(II) ions.
Abstract (Original Language): 
Sulu çözeltilerden Cd (II) iyonlarının adsorpsiyonla giderilmesinde kullanılan poliamin-poliüre reçinesi TDI (toluendiizosiyanat) ve TETA (trietilentetraamin) kullanılarak hazırlanmıştır. Adsorpsiyona pH değişimi, adsorbanın dozu, karıştırma süresinin ve başlangıç derişiminin etkisi incelenmiştir. Adsorban pH 6,0’ da, 0,5 g/100 mL reçine dozunda ve 60 dakika karıştırma süresinde Cd (II) iyonları için iyi sorpsiyon özelliği göstermiştir. Deney sonuçlarının Langmiur ve Freundlich denge eşitliklerine uygunluğunun araştırılması sonucunda kemisorpsiyonu açıklayan Langmuir denge eşitliğine 0,998 korelasyon katsayısıyla uyduğu görülmüştür. Maksimum adsorpsiyon kapasitesi 7,305 mg/g olarak bulunmuştur. Sonuçlar sentezlenen reçinenin yüksek adsorpsiyon kapasitesine sahip olduğunu göstermektedir.
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