THE INVESTIGATION OF THE ADSORPTION OF ACID BLUE 121 ON BANANA SHELL IN A BATCH SYSTEM

Year 2015, Volume: 16 Issue: 2, 293 - 302, 11.11.2015

Deniz Uzunoğlu Ayla Özer Ahmet Uslu Onur Elbağlı Yakup Şen

https://doi.org/10.18038/btd-a.18907

Abstract

In this study, the effects of initial pH, temperature, initial dye concentration and adsorbent concentration to the adsorption of Acid Blue 121 (AB 121) on banana shell (MK), an agricultural waste, was investigated in a batch system. It was obtained that the equilibrium data of AB 121adsorption on MK was well fitted to the Langmuir isotherm model and the maximum monolayer adsorption capacity of MK was to be 141 mg/g. It was concluded that the kinetic of AB 121 adsorption on MK could be described with the pseudo second order kinetic model, and also the external and intraparticle diffusion were effective in the actual adsorption process. The thermodynamic parameters of AB 121adsorption on MK were determined and it was observed that the adsorption of AB 121 on MK was exothermic and spontaneous in nature. The characterization studies of adsorbent were carried out with FTIR, SEM and EDX analysis methods.

Keywords

Acid Blue 121, Adsorption, Banana shell, Agricultural waste

ACID BLUE 121 BOYAR MADDESİNİN MUZ KABUĞUNA KESİKLİ SİSTEMDE ADSORBSİYONUNUN ARAŞTIRILMASI

Abstract

Bu çalışmada, Acid Blue 121 (AB 121)’in tarımsal bir atık olan muz kabuğu (MK)’na adsorbsiyonuna başlangıç pH’sı, sıcaklık, başlangıç boyar madde derişimi ve adsorbent derişiminin etkisi kesikli bir sistemde araştırılmıştır. AB 121’in MK’na adsorbsiyonu denge verilerinin Langmuir izoterm modeline çok iyi uyduğu; MK’nun maksimum tek tabaka adsorpsiyon kapasitesinin 141 mg/g olduğu saptanmıştır. AB 121’nin MK’na adsorbsiyonu kinetiğinin yalancı ikinci mertebe kinetik modeli ile temsil edilebileceği ayrıca giderimde tanecik içi ve tanecik dışı difüzyonunun etkili olduğu sonucuna varılmıştır. AB 121’in MK’na adsorbsiyonuna ait termodinamik parametreler belirlenmiş; çalışılan adsorpsiyon sisteminin ekzotermik ve kendiliğinden gerçekleştiği gözlenmiştir. MK’nun FTIR, SEM ve EDX analizleri ile karakterizasyonu çalışmaları da gerçekleştirilmiştir.

Keywords

Acid Blue 121, Adsorpsiyon, Muz kabuğu, Tarımsal atık

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