H2SO4 İle Aktive Edilen Keşan Yöresi Bentonitinin Di Azo Boyar Madde Bazik Sarı 28 Denge Adsorpsiyonu Karakteristiklerinin İncelenmesi

Year 2020, Volume: 12 Issue: 1, 217 - 226, 31.01.2020

Yasemen Kalpaklı , Şilan Ekinci Dilan Ertaş

https://doi.org/10.29137/umagd.591250

Abstract

Bu çalışmada Keşan yöresi asit aktive
Ca-Bentoniti adsorbant olarak kullanılmıştır. Tekstil, kozmetik, gıda, kâğıt, halı ve plastik gibi
endüstri alanlarında geniş çapta kullanımı olan boyar maddelerden di azo
kromorf yapısına sahip Bazik Sarı 28’in (BY28) adsorpsiyon karakteristiği
incelenmiştir. Adsorpsiyon üzerinde doğrudan etkili pH, adsorbant miktarı,
denge zamanı ve başlangıç konsantrasyonu gibi koşullar BY28 adsorpsiyonu için
optimize edilmiştir. Denge adsorpsiyon koşulları olarak pH= 6,  0,05 g adsorbant miktarı ve denge zamanı
olarak  40 dakika elde edilmiştir. Denge
adsorpsiyon koşullarında elde edilen deneysel sonuçlar lineerleştirilmiş
Langmuir modeli (R²=0,9987), Freundlich modeli (R²=0,8887)
ve Dubinin-Radushkevich (D-R) (R²=0,5594) karşılaştırılarak
yorumlanmıştır. Keşan yöresine ait asit aktive Ca-bentonitin tek tabaka adsorpsiyon
kapasitesi 116,3 mg/g olarak elde edilmiştir. 25 °C denemeler için Gibbs
serbest enerjisi (ΔG^o) hesaplanmış ve BY28’in asit aktive bentonit
üzerine adsorpsiyon mekanizmasının istemli bir reaksiyon olduğu sonucuna
varılmıştır.

Keywords

BY 28, asit aktive bentonit, adsorpsiyon

Investigation of Equilibrium Adsorption Characteristics of Di Azo Dyes Basic Yellow 28 of H2SO4 Activated Kesan Region Bentonite

Abstract

In this study, acid activated Ca-Bentonite of Keşan region was used as
adsorbent. Adsorption characteristics of Basic Yellow 28 (BY28) which has di
azo chromorph structure, which is widely used in industry such as textile,
cosmetics, food, paper, carpet, and plastic were investigated in batch system.
Conditions such as pH, adsorbent amount, equilibrium time, and initial
concentration which are directly effective on adsorption were optimized for
BY28 adsorption. pH = 6, 0.05 g adsorbent amount and 40 minutes of equilibrium
time were obtained as equilibrium adsorption conditions. Experimental results
obtained under equilibrium adsorption conditions were interpreted by comparing
linearized Langmuir model (R² = 0.9987), Freundlich model (R²
= 0.8887), and Dubinin-Radushkevich (D-R) (R² = 0.5594). The single
layer adsorption capacity of acid activated Ca-bentonite of Keşan region was
obtained as 116.3 mg / g. Gibbs free energy (ΔG^o) was calculated for
experiments at 25 ° C and it was concluded that the adsorption mechanism of BY28
on acid activated bentonite is a voluntary reaction.

Keywords

Basic Yellow 28, acid activated bentonite, adsorption

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