TY  - JOUR
T1  - TiO2 Nanopartikülü ve TiO2/Aktif Çamur Sentezi ile Sulu Çözeltiden Cu (II) İyonlarının Adsorpsiyonu
TT  - Removal of Cu(II) ions from Aqueous Solution by Synthesis of TiO2 nanoparticles and TiO2/Activated Sludge
AU  - Keklikcioğlu Çakmak, Neşe
AU  - Topal Canbaz, Gamze
PY  - 2020
DA  - January
Y2  - 2019
DO  - 10.17714/gumusfenbil.514285
JF  - Gümüşhane Üniversitesi Fen Bilimleri Dergisi
PB  - Gumushane University
WT  - DergiPark
SN  - 2146-538X
SP  - 86
EP  - 98
VL  - 10
IS  - 1
LA  - tr
AB  - Sonzamanlarda sulardan ağır metal giderim çalışmaları önem kazanmıştır. Bu amaçla bu çalışmada sulu çözeltiden Cu (II)iyonlarının gideriminde kullanılmak üzere sol-jel yöntemi ile saf TiO2 nanopartiküllerive TiO2/aktif çamur bileşimi sentezlenmiştir. Sentezlenenmateryallerin karakterizasyon analizleri; X ışını kırınım analizi (XRD), UV-Visabsorpsiyon spektroskopisi (UV-VIS), taramalı elektron mikroskobu (SEM), enerjidağılım X-ışınları spektroskopisi (EDS) ve Fourier Dönüşümlü KızılötesiSpektroskopisi (FTIR) teknikleri kullanılarak gerçekleştirilmiştir. TiO2 nanopartiküllerive TiO2/aktif çamur bileşiminin Cu (II) giderim potansiyeli kesiklisistemde incelenmiştir. 25oC’de sentezlenen TiO2/aktifçamur bileşimi bakır gideriminde en iyi adsorban olarak belirlenmiştir.Adsorpsiyon sisteminin optimum koşullarını belirlemek amacı ile pH, temassüresi, başlangıç metal iyon derişim gibi parametrelerin etkisi incelenmiştir.Sistemin Langmuir ve Freundlich adsorpsiyon izotermlerine uygunluğuaraştırılmış, Langmuir izotermine daha uygun olduğu belirlenmiş ve sisteminmaksimum adsorpsiyon kapasitesi 47.61 mg/g olarak hesaplanmıştır. En uygunkinetik modeli belirlemek için yapılan çalışmalarda ise adsorpsiyon prosesininyalancı ikinci dereceden kinetik model ile uyum sağladığı gözlenmiştir. Gibbsserbest enerji ve entalpi değerleri ise sistemin kendiliğinden gerçekleştiğinive ekzotermik olduğunu göstermiştir.
KW  - Adsorpsiyon
KW  - Ağır metal
KW  - Sol-jel
KW  - TiO2 nanopartikül
N2  - In recent years, the removal of heavy metals fromwater has gained importance. For this purpose, pure TiO2 nanoparticlesand TiO2/activated sludge composition were synthesized by sol-gelmethod for removal of Cu (II) heavy metal in this work. Characterization analyzes of the synthesized materials were performedusing X-ray diffraction (XRD), Ultraviolet–visiblespectroscopy(UV–VIS) spectrometer, scanning electronmicroscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and FourierTransform Infrared Spectroscopy (FTIR) techniques. The adsorption potential ofnanosized TiO2 and TiO2/activated sludge composition forremoval of Cu (II) was investigated in abatch system. TiO2/sewage sludge at 25 oC was found to bethe best adsorbent for copper removal. In order to determine the optimumconditions of the adsorption system, the effects of the parameters such as theeffect of pH, contact time, initial metal ion concentrations were investigated.The suitability of the system for Langmuir and Freundlich adsorption isothermswas investigated, and it was determined that Langmuir isotherm was moresuitable and the maximum adsorption capacity of the system was calculated as47.61 mg/g. In the studies conducted to determine the most suitable kineticmodel, it was observed that the adsorption process conformed to thepseudo-second kinetic model. Gibbs free energy and enthalpy values ​​show thatthe system is spontaneous and exothermic.
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UR  - https://doi.org/10.17714/gumusfenbil.514285
L1  - https://dergipark.org.tr/en/download/article-file/923088
ER  -