Çörekotu posası kullanılarak sulardan demir(III) iyonunun giderilmesi
Date
2020-07-07
Authors
Coşkun, Yasemin İşlek
Journal Title
Journal ISSN
Volume Title
Publisher
Bursa Uludağ Üniversitesi
Abstract
Sulu çözeltilerden Fe(III) iyonunun giderimi için çörekotu posası adsorban olarak kullanılmıştır. Çözeltinin başlangıç pH’sı, sıcaklık, çalkalama süresi, adsorban miktarının adsorpsiyon verimi üzerindeki etkileri kesikli yöntemle deneysel olarak incelenmiştir. pH 4’te adsorbanın yüksek verimle Fe(III) iyonlarını giderdiği bulunmuştur. Adsorban miktarı ile giderme verimi arasındaki ilişki incelenmiş ve en yüksek giderme verimi 10 mg adsorban miktarı için elde edilmiştir. Adsorpsiyon izoterm modelleri (Langmuir, Freundlich ve DubininRadushkevic) uygulanmış ve adsorpsiyonun Langmuir izoterm modeline uyduğu bulunmuştur. Termodinamik çalışmalar sonucunda adsorpsiyonun ekzotermik, istemli ve kendiliğinden gerçekleştiği anlaşılmıştır. Adsorpsiyonun ikinci dereceden yalancı kinetik modele uyduğu bulunmuştur. Adsorbanın rejenerasyon ve karakterizasyon çalışmaları yapılmıştır
Black cumin seed cakes were used as an adsorbent to remove Fe (III) ions from aqueous solutions. The effects of the initial pH, temperature, contact time, and the amount of adsorbent on the adsorption efficiency were investigated experimentally using the batch method. At pH 4, it was found that Fe (III) ions were removed by the adsorbent with high efficiency. The relationship between adsorbent amount and removal efficiency was examined and the highest removal efficiency was obtained for 10 mg adsorbent amount. Adsorption isotherm models (Langmuir, Freundlich and Dubinin-Radushkevic) were applied and the adsorption was found to fit the Langmuir isotherm model. As a result of thermodynamic studies, it has been understood that adsorption is exothermic, favorable, and spontaneous. Adsorption was found to fit the pseudo second-order kinetic model. Regeneration and characterization studies of adsorbent have been done.
Black cumin seed cakes were used as an adsorbent to remove Fe (III) ions from aqueous solutions. The effects of the initial pH, temperature, contact time, and the amount of adsorbent on the adsorption efficiency were investigated experimentally using the batch method. At pH 4, it was found that Fe (III) ions were removed by the adsorbent with high efficiency. The relationship between adsorbent amount and removal efficiency was examined and the highest removal efficiency was obtained for 10 mg adsorbent amount. Adsorption isotherm models (Langmuir, Freundlich and Dubinin-Radushkevic) were applied and the adsorption was found to fit the Langmuir isotherm model. As a result of thermodynamic studies, it has been understood that adsorption is exothermic, favorable, and spontaneous. Adsorption was found to fit the pseudo second-order kinetic model. Regeneration and characterization studies of adsorbent have been done.
Description
Keywords
Adsorpsiyon, Fe(III) iyonu, Çörekotu posası, İzotermal ve kinetik modeller, Adsorption, Fe (III) ion, Black cumin press cake, Isothermal and kinetic models
Citation
Coşkun, Y. İ. (2020). "Çörekotu posası kullanılarak sulardan demir(III) iyonunun giderilmesi". Uludağ Üniversitesi Mühendislik Fakültesi Dergisi, 25(2), 961-980.