METİLEN MAVİSİNİN MODİFİYE EDİLMİŞ Cystoseira barbata (STACKHOUSE) C. AGARDH KULLANILARAK BİYOSORPSİYONU

Year 2017, , 81 - 87, 01.06.2017

Yeliz Özüdoğru , Melek Merdivan

https://doi.org/10.23902/trkjnat.300344

Cited By: 6

Abstract

Bu çalışmada, sulu çözeltide bulunan metilen
mavisi (MM) boyar maddesinin modifiye edilmiş (0,1M HNO₃ ve 1M HNO₃
ile) Cystoseira barbata kullanılarak
giderilmesine çalışılmıştır. Adsorpsiyona, pH’ın, temas süresinin, farklı
derişimlerde bulunan MM çözeltisinin etkileri incelenmiştir. Çalışma sonucunda,
ilk 50dk. içerisinde sistemin dengeye geldiği ve adsorpsiyon kapasitesinin pH
değişiminden pek etkilenmediği gözlemlenmiştir. Yapılan izoterm çalışmalarında
ise, Freundlich izoterm modeline daha çok uyduğu belirlenmiş ve q_max
değeri 0,1M HNO₃ grubunda daha yüksek (100,6mg/g) bulunmuştur.
Yapılan SEM ve FTIR analizlerinde ise, MM boyar maddesinin alg yüzeyinde
meydana getirdiği değişikler ve alg yüzeyinde hangi gruplara tutunduğu
belirlenmiştir.

Keywords

alg, biyosorpsiyon, Boyar madde

Biosorption of Methylene Blue by Modified Cystoseira barbata (Stackhouse) C. Agardh

Abstract

In
this study, methylene blue (MB) dye in aqueous solution was tried to be removed
by using modified Cystoseira barbata
(with 0.1M HNO₃ and 1M HNO₃). The effects of pH, contact
time and different MB concentrations on adsorption were investigated. The results
showed that the system reached to equilibrium in the first 50min and pH had no
significant effect on adsorption capacity. In the isotherm studies, the
Freundlich isotherm model was found to be more suitable and the q_max
value was higher in the 0,1M HNO₃ group (100.6mg/g). The changes in
the algae surface caused by MB and the groups on the algae surface that the dye
attached were determined in SEM and FTIR analysis.

Keywords

Coloring agent, algae, biosorption

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