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Bu çalışmada, kaolin destekli nano boyutlu sıfır değerlikli demir (K-nZVI) partikülleri kaolin varlığında borhidrür indirgeme metodu ile sentezlenmiş ve sulu çözeltiden Remazol Brilliant Blue R (RBBR) gideriminde kullanılmıştır. RBBR gideriminde çözelti başlangıç pH’ı, K-nZVI dozajı, temas süresi ve başlangıç boyar madde konsantrasyonunun etkisi değerlendirilmiştir. Giderim veriminin pH’a bağlı olduğu tespit edilmiş ve RBBR’nin maksimum giderim verimi pH 3’te gerçekleşmiştir. 0.3-1.0 g L-1 dozaj aralığında K-nZVI dozajının artışı ile RBBR giderim verimi artmıştır. 60 dakikalık temas süresinde dengeye ulaşılmıştır. Başlangıç boyar madde konsantrasyonun artışı ile giderim verimi azalmıştır. Çalışmada, deneysel verilerin Langmuir ve Freundlich izoterm modellere uygunluğu da araştırılmış ve bu modellere ait parametreler hesaplanmıştır. K-nZVI ile RBBR adsorpsiyonun hem Langmuir hem de Freundlich izoterme uygun olduğu tespit edilmiştir. Maksimum adsorpsiyon kapasitesi 200 mg g-1 olarak belirlenmiştir.
In this study, caolin-supported nano-dimensional zero-value iron (K-nZVI) particles were synthesized by the borhydride reduction method in caolin presence and used in the Remazol Brilliant Blue R (RBBR) solution of water. In the RBBR removal, the solution was evaluated the effect of the initial pH, K-nZVI dose, contact time and the initial coloring substance concentration. The output is determined to be dependent on the pH and the maximum output of the RBBR is at pH 3. 0.3-1.0 g L-1 dose range increased with the increase in the dose of K-nZVI, the RBBR elimination yield increased. It was balanced within 60 minutes of contact. Starting with the increase in the concentration of the painting material, the expenditure yield has decreased. The study also studied the compatibility of experimental data with the Langmuir and Freundlich isoterm models and calculated the parameters of these models. With K-nZVI, the RBBR adsorption has been found to be compatible with both Langmuir and Freundlich isotherms. The maximum adsorption capacity is 200 mg g-1.
In this study, kaolin supported nano-sized zero-valent iron (K-nZVI) particles were synthesized by borohydride reduction method in presence of kaolin and used for removal of Remazol Brilliant Blue R (RBBR) from aqueous solution. The effects of solution initial pH, K-nZVI dosage, contact time and initial dye concentration for removal of RBBR were evaluated. The removal efficiency was determined to be pH dependent and the maximum removal efficiency of RBBR was obtained at pH 3. RBBR removal efficiency increased with increasing K-nZVI dosage in the dosage range of 0.3 and 1.0 g L-1. The equilibrium was reached at the contact time of 60 minutes. The removal efficiency decreased with the increase of the initial dye concentration. In this study, the suitability of experimental data to Langmuir and Freundlich isotherm models was also investigated and the parameters of these models were calculated. It was found that RBBR adsorption by K-nZVI was suitable for both Langmuir and Freundlich isotherm. The maximum adsorption capacity was determined as 200 mg g-1.
Dergi Türü : Uluslararası
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