CR(VI) BIOSORPTION BY WASTE ACORN OF QUERCUS ITHABURENSIS IN FIXED BEDS

Yıl 2006, Cilt: 8 Sayı: 2, 31 - 45, 01.05.2006

Emine Malkoç Yaşar Nuhoğlu

Öz

In this paper, the biosorption of Cr(VI) ions onto waste acorn of Quercus ithaburensis, which was produced by valeks industries, was tested using fixed bed adsorption column. The experiments were carried out as a function of column height and Cr(VI) ion concentrations. The results of the biosorption studies indicated that an increase in Cr(VI) ion concentrations yielded increases in bed capacities and a decreases in the bed volumes (BV). Also an increase in column height resulted in increased breakthrough time, the bed volumes (BV) and bed capacities. The experimental data were analyzed to fitting to the Thomas model and the YoonNelson model

Anahtar Kelimeler

Adsorption, Chromium, Fixed bed column, Adsorption model

PALAMUT MEŞESİ (Quercus ithaburensis) ATIĞI İLE SABİT YATAKLI KOLONDA Cr(VI) BİYOSORPSİYONU

Öz

Bu çalışmada, deri sepileme maddesi üreten bir fabrikanın atığı olarak ortaya çıkan palamut meşesi (Quercus ithaburensis) atığı ile Cr(VI) iyonunun giderimi sabit yataklı adsorpsiyon kolonunda incelenmiştir. Cr(VI) biyosorpsiyonuna kolon yüksekliği ve Cr(VI) konsantrasyonunun etkisi araştırılmış; palamut meşesi atığı ile Cr6+ iyonunun gideriminde, besleme çözeltisindeki metal konsantrasyonunun artması ile yatak kapasitesinin arttığı, kullanılan yatak hacmi sayısı(BV)’nın azaldığı görülmüştür. Aynı zamanda, kolon yüksekliğinin artmasıyla kırılma zamanı, kullanılan yatak hacmi sayısı(BV) ve yatak kapasitesinin de arttığı gözlenmiştir. Elde edilen deneysel verilerin Thomas ve Yoon-Nelson modeline uygunluğu araştırılmıştır.

Anahtar Kelimeler

Adsorpsiyon, Krom, Sabit yataklı kolon, Adsorpsiyon modeli

Kaynakça

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