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Please use this identifier to cite or link to this item: http://hdl.handle.net/11129/1411

Title: Preparation and characterization of chitosan - pullulan hydrogel and its application for adsorption of erichrome black T from aqueous solutions
Authors: Al-Salim, Mahdi Abdulmohsin Jazea
Keywords: Chemistry
Superabsorbent, Chitosan-Pullulan Hydrogel, EBT, Eco-Friendly
Issue Date: Feb-2014
Publisher: Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ)
Citation: Al-Salim, Mahdi Abdulmohsin Jazea. (2014). Preparation and characterization of chitosan - pullulan hydrogel and its application for adsorption of erichrome black T from aqueous solutions. Thesis (M.S.), Eastern Mediterranean University, Institute of Graduate Studies and Research, Dept. of Chemistry, Famagusta: North Cyprus.
Abstract: ABSTRACT: In this study, a superabsorbent hydrogel was synthesized by crosslinking chitosan and pullulan by glutaraldehyde. The Chitosan/Pullulan Hydrogel (CPH) as an adsorbent was then successfully used for adsorption of Erichrome Black T (EBT) dye from aqueous medium. The adsorbent capacity was investigated at different operational conditions such as initial concentration of dye, adsorbent dosage, pH, temperature, presence of salt and contact time. The equilibrium data was observed to follow the Langmuir model and was observed that EBT sorption process favored the pseudo-second order kinetics. FT-IR characterization was used to demonstrate presence of the various functional groups; -NH2, -CONH2, -CO and -OH on the adsorbent. From the data obtained from the experimental measurements, conclusion were drawn based on the eco-friendly and economical nature of the adsorbent material and thus may be a reliable material for treatment of contaminants from aqueous solutions. Key words: Superabsorbent, Chitosan-Pullulan Hydrogel, EBT, Eco-friendly. ………………………………………………………………………………………………………………………………………………………………………………………………………… ÖZ:Bu çalışmada, kitosan ve pullulanın glutaraldehitle çaprazbağlazbağlı superabsorbent hidrojel sentezlenmiştir. Kitosan/Pullulan hidrojeli (CPH), Erichrome Black T (EBT) boyasının sulu ortamından adsorpsiyonu için başarılı bir adsorbenttir. Adsorbent kapasitesi, farklı boya başlangıç konsantrasyonu, adsorbent miktarı pH, sıcaklık, tuz varlığı ve etkileşim süreleri gibi farklı operasyon şartlarında incelenmiştir. Adsorpsiyon denge verileri Langmuir adsorpsiyon modelini izlediği ve EBT adsorplama prosesinin yalancı ikinci mertebe kinetiğe uyduğu saptanmıştır FT-IR karakterizasyonu adsorbent üzerinde -NH2, -CONH2, -CO ve –OH gibi birçok fonksiyonel grubun varlığını göstermektedir. Deneysel ölçümlerden elde edilen veriler adsorban materyalin çevredostu ve ekonomik niteliğe sahip oladuğunu ve böylece suluç özeltilerden kirleticilerin temizlenmesi için güvenilir bir malzeme olabileceğ sonucunu doğurmuştur. AnahtarKelimeler: Süperabsorbent, kitosan-Pullulan, Erichrome Black T, ÇevreDostu.
Description: Master of Science in Chemistry. Thesis (M.S.)--Eastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Chemistry, 2014. Supervisor: Prof. Dr. Mustafa Gazi.
URI: http://hdl.handle.net/11129/1411
Appears in Collections:Theses (Master's and Ph.D) – Chemistry

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