DÜŞÜK MALİYETLİ ADSORPLAYICILAR KULLANILARAK SULU ORTAMLARDAN FOSFAT GİDERİMİNİN ARAŞTIRILMASI

Yıl 2014, Cilt: 2 Sayı: 1, 35 - 44, 01.03.2014

Müjgan Okur İlknur Kayacan Karadağlı

Öz

Bu çalışmada düşük maliyetli farklı atık maddeler kullanılarak atıksulardaki fosfatın giderimi kesikli bir sistemde incelenmiştir. Fosfat giderimine adsorplayıcı derişimi ve fosfat derişiminin etkisi yüksek fosfat giderimi sebebiyle yumurta kabukları ve ponza taşı kullanılarak araştırılmıştır. Yumurta kabukları ve ponza taşı ile fosfat adsorpsiyonu mekanizması için deneysel verilere Langmuir ve Freundlich modeli uygulanmıştır. Her iki modelin deneysel verilerle uyum içinde olduğu görülmüştür. Langmuir modeli ile yumurta kabukları ve ponza taşı için elde edilen maksimum adsorpsiyon kapasitesi (qmax) sırası ile 19,23 mg/g (R2=0,943) ve 32,26 mg/g’dır (R2=0,894). Freundlich modeli ile elde edilen heterojenlik faktörü (1/n) değeri yumurta kabukları için 0,245, ponza taşı için 0,383 olarak bulunmuştur.

Anahtar Kelimeler

Atıksu, yumurta kabuğu, ponza taşı, fosfat, adsorpsiyon

INVESTIGATION OF REMOVAL OF PHOSPHATE FROM AQUEOUS MEDIA USING LOW COST ADSORBENT

Öz

In this study, removal of phosphate from waste aqueous solutions was examined in a batch wise system using low cost waste materials. The effects of adsorbent dosage and phosphate concentration on the phosphate removal have been studied bu using eggshells and pumice due to high removal of phosphate . The experimental data were applied to the Langmuir and Freundlich isotherm models for determination of adsorption of phosphate mechanism onto waste eggshells and pumice. The results indicate that both models fitted very well the experimental data. According to the Langmuir isotherm studies, the maximum sorption capacity (qmax) of the waste eggshell and pumice were evaluated as 19.23 mg/g (R2=0.943) and 32.26 mg/g (R2=0.894). The heterogeneity factor (1/n) of the Freundlich isotherm model was calculated as 0.245 for the waste eggshells, 0.383 for the pumice, respectively.

Anahtar Kelimeler

Wastewater, eggshell, pumice, phosphate, adsorption

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