Tetrasiklin Antibiyotiğinin Zeolitte Adsorpsiyonu

Yıl 2022, Cilt: 10 Sayı: 1, 186 - 197, 31.01.2022

Aslı Şükriye Şalcıoğlu

https://doi.org/10.29130/dubited.947152

Cited By: 1

Öz

Bu çalışmada hayvancılıkta yaygın bir şekilde kullanılan oksitetrasiklin (OTC) antibiyotiğinin sodyum ve hekzadesiltrimetilammonyum (HDTMA) ile modifiye edilmiş zeolite adsorpsiyonu incelenmiştir. Adsorpsiyon çalışmaları farklı OTC konsantrasyonları, çözelti pH’larında ve adsorbent dozajlarında yapılmıştır. Adsorpsiyon izoterm verileri Freundlich modeline uygulanmıştır. HDTMA-zeolit ile antibiyotik giderimi pH’a kuvvetli bir bağlılık göstermiş ve pH 8’de %90’lık maksimum antibiyotik giderimi elde edilirken, Na-zeolitle pH 6.5’ta %88’lik maksimum OTC adsorpsiyonu elde edilmiştir. Pesudo-birinci ve ikinci derece kinetik denklemleri adsorpsiyon modelini tanımlamak için seçilmiştir. Çeşitli iyonların OTC adsorpsiyonuna etkisi de araştırılmıştır. Kalsiyum, magnezyum, fosfat, klorür ve sülfat iyonları OTC’nin Na ve HDTMA-zeolite adsorpsiyonunu olumsuz yönde etkilerken, bikarbonat iyonları ise OTC’nin HDTMA-zeolite adsorpsiyonunu arttırmıştır. Amonyum iyonları ise OTC ile birlikte Na-zeolit tarafından sudan giderilmiştir.

Anahtar Kelimeler

Zeolit, Oksitetrasiklin, Adsorpsiyon, U.V. spektrofotometresi

Destekleyen Kurum

TÜBİTAK

Proje Numarası

106Y073

Teşekkür

Bu çalışma Boğaziçi Üniversitesi TUBITAK (Project No 106Y073) tarafından desteklenmiştir. Tez danışmanım Prof. Dr. I. A. Balcıoğlu’na teşekkürlerimi sunarım

Sorption of Tetracycline Antibiotic on Zeolite

Öz

In this study, the adsorption of widely used antibiotic, oxytetracycline (OTC) onto sodium (Na+) and hexadecyltrimethylammonium (HDTMA) modified zeolite was investigated. Adsorption studies were carried out at different OTC concentrations, initial pH’s, and adsorbent dosages. The adsorption isotherm data were fitted to Freundlich model. Antibiotic adsorption on HDTMA-zeolite exhibited stronger pH dependence and 90% antibiotic removal was achieved at pH 8 and maximum OTC adsorption of Na-zeolite 88% occurred at pH 6.5. The kinetic models including pseudo-first and second order were tested to determine adsorption model for kinetics. The effect of various ions on the adsorption of OTC by Na and HDTMA-zeolite was also investigated. While the presence of calcium, magnesium, phosphate, chloride, and sulfate ions lead to decrease the sorption of OTC onto Na and HDTMA- zeolite, bicarbonate ion lead to improve the adsorption of OTC on HDTMA-zeolite. NH4+ and OTC were simultaneously removed from water by Na-zeolite.

Anahtar Kelimeler

Zeolite, Oxytetracycline, Adsorption, U.V. spectrophotometer

Proje Numarası

106Y073

Kaynakça

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