Murat İNAL, Beste ÇAĞDAŞ TUNALI, Mustafa YİĞİTOĞLU

Akrilamid-Krotonik Asit İç İçe Geçmiş Ağ Yapılı Hidrojellerinin Metilen Mavisinin Adsorpsiyonunda Kullanımı

Bu çalışmada akrilamid-krotonik asit hidrojelleri metilen mavisi boyasının gideriminde adsorban olarak kullanılmıştır. Boyanın adsorpsiyonuna pH’nın, krotonik asit yüzdesinin, başlangıç boya derişiminin ve tekrar kullanım sayısının etkisi araştırılmıştır. Yalnızca akrilamidle hazırlanan hidrojellerde pH’nın artması ile adsorpsiyonda bir miktar artış görülmüştür. Akrilamid-krotonik asit hidrojellerinde pH 7, 9 ve 10’da adsorpsiyon hemen hemen yakın bulunmuş, buna karşılık pH 8’de belirgin bir azalma gözlenmiştir. Hidrojellerde bulunan krotonik asit yüzdesinin artması ile adsorpsiyon belirgin bir şekilde artmıştır. Ayrıca adsorbsiyon-desorpsiyon çalışmaları sonucu göstermektedir ki, 20 kere tekrar kullanımdan sonra bile hidrojellerin adsorpsiyon kapasitesi hemen hemen hiç azalmamıştır. Sonuçlar akrilamid-krotonik asit hidrojellerin endüstriyel ölçekte tekstil atık sularından boyaların gideriminde adsorban olarak kullanılabileceğini göstermektedir.

Anahtar Kelimeler:

akrilamid, krotonik asit, hidrojel, metilen mavisi, adsorpsiyon, tekstil

The Use of Acrylamide-Crotonic Acid Nested Network Structured Hydrogels for Adsorption of the Methylene Blue

In this study acrylamide-crotonic acid hydrogels are used as adsorbent for removal of methylene blue. The effects of pH, crotonic acid percentage, initial dye concentration and reusage number on the adsorption of the dye are investigated. When the pH increased adsorption also slightly increased with the hydrogels made up of only acrylamide. With the acrylamide crotonic acid hydrogels adsorption rates are similar in pH 7,9 and 10 but there is a significant decrease in pH 8. Adsorption increases with the increasing crotonic acid percentage in hydrogels. In addition, the adsorption-desorption results showed that the adsorption capacity of the hydrogel was not changed even after 20 times repeated use. Results show that acrylamide-crotonic acid hydrogels can be used as adsorbent for dye removal in industrial textile waste water.

Keywords:

acrylamide, crotonic acid, hydrogel, methylene blue, adsorption, textile,

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