Removal of Reactive Black 39 Dye from Distilled Water and Synthetic Wastewater by a Nano Adsorbent

Öz

In the present study, nano magnetite coated Eucalyptus camaldulensis barks (NEC) was used as a low-cost adsorbent for the removal of a textile dye Reactive Black 39 (RB39) from distilled water and synthetic wastewater. The effects of the various parameters, contact time, pH, temperature, NEC dosage and initial dye concentration on the adsorption were investigated. It was found that the adsorption capacity of NEC increases by increasing the RB39 concentration, pH and temperature and by decreasing the dosage of NEC. 0.2 g NEC was found to be sufficient for the removal of 300 mg/L RB39 from 150 mL distilled water with ∼94 % removal efficiency. On the other hand 0.4 g NEC was found sufficient for the removal of RB39 from synthetic wastewater with ∼92 % removal efficiency. The Freundlich isotherm model described the adsorption process more effectively (R2 = 0.993) than the Langmuir isotherm model. The Langmuir isotherm predicted a 432.12 mg/g maximum adsorption capacity of NEC.

Anahtar Kelimeler

• Adsorption,Eucalyptus camaldulensis,Magnetite

Bir Nano Adsorbent ile Reaktif Black 39 Boyar Maddesinin Distile Sudan ve Sentetik Atıksudan Giderimi

Öz

Bu çalışmada yüzeyi nano manyetit ile kaplanmış Eucalyptus camaldulensis kabukları (NEK), bir tekstil boyar maddesi olan Reaktif Black 39‟un (RB39) distile su ve sentetik atıksudan gideriminde düşük maliyetli bir adsorbent olarak kullanılmıştır. Adsorpsiyon üzerine temas zamanı, pH, sıcaklık NEK dozu ve başlangıç boyar madde konsantrasyonu gibi çeşitli parametrelerin etkisi araştırılmıştır. Çalışmalar NEK‟in adsorpsiyon kapasitesinin başlangıç boyar madde konsantrasyonunun, pH‟ın ve sıcaklığın artmasıyla arttığını, NEK dozunun artmasıyla azaldığını göstermiştir. 300 mg/L RB39‟un 150 mL distile sudan yaklaşık %94 verimle giderilmesi için 0,2 g NEK yeterli olduğu tespit edilmiştir. Diğer taraftan 300 mg/L RB39‟un sentetik atıksudan yaklaşık %92 verimle giderilmesi için 0,4 g NEK‟in yeterli olduğu bulunmuştur. Freundlich izotermi (R2=0,993) adsorpsiyon sürecini Langmuir izotermine göre daha etkili bir şekilde açıklamıştır. Langmuir izotermi NEK‟in maksimum adsorpsiyon kapasitesini 432,12 mg/g olarak tahmin etmiştir.

Anahtar Kelimeler

• Adsorpsiyon,Eucalyptus camaldulensis,Manyetit

Kaynakça

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