Scopus
YÖKSİS Eşleşti
Adsorption of phenols from contaminated water through titania-silica mixed imidazolium based ionic liquid: Equilibrium, kinetic and thermodynamic modeling studies
Journal of Macromolecular Science, Part A: Pure and Applied Chemistry · Ekim 2016
YÖKSİS Kayıtları
Adsorption of phenols from contaminated water through titania silica mixed imidazolium based ionic liquid Equilibrium kinetic and thermodynamic modeling studies
Journal of Macromolecular Science, Part A · 2016 SCI-Expanded
PROFESÖR MUSTAFA YILMAZ →
Makale Bilgileri
DergiJournal of Macromolecular Science, Part A: Pure and Applied Chemistry
Yayın TarihiEkim 2016
Cilt / Sayfa53 · 619-628
Scopus ID2-s2.0-84985031149
Özet
The present study describes the synthesis and characterization of titania-silica mixed imidazolium based ionic liquid (Ti-Si-IL) as well as evaluation of its adsorption behavior towards the 2,4-dinitrophenol (2,4-DNP) and 2,4,6-trichlorophenol (2,4,6-TCP). Synthesized Ti-Si-IL adsorbent was characterized by Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), BET surface area Brunauer-Emmett-Teller (BET), thermogravimetric analysis (TGA) and elemental analysis (CHN). The adsorption of 2,4-DNP and 2,4,6-TCP on Ti-Si-IL was investigated systematically by evaluating the effects of adsorbent dosage, initial pH, contact time and temperature. Satisfactory adsorption 95% and 65% for 2,4-DNP and 2,4,6-TCP was observed at pH 4 and 6, respectively. The kinetic results for 2,4-DNP and 2,4,6-TCP on Ti-Si-IL indicated that the kinetic data follows pseudo-second-order model (R2 = 0.9985 and 0.9750, respectively). Adsorption isotherms were fitted well by the Langmuir model for 2,4-DNP (qm = 44.64 mg g−1 at 318 K) and Freundlich model for 2,4,6-TCP (KF = 0.63 mg g−1 at 318 K). The +ΔH° and -ΔG° values demonstrated that the adsorption of 2,4-DNP was endothermic and spontaneous in nature. While the -ΔH° and +ΔG° values for 2,4,6-TCP adsorption demonstrated exothermic and comparatively nonspontaneous. During the removal process, the role of different functional groups, cyclic structure was monitored and found that the ionic property as well as π-π interactions of host molecules played important role in the extent of adsorption.
Yazarlar (6)
1
Nor Atiqah Ismail
2
Shabnam Bakhshaei
3
Muhammad Afzal Kamboh
4
Ninie Suhana Abdul Manan
5
Sharifah Mohamad
6
Mustafa Yilmaz
Anahtar Kelimeler
ionic liquid
kinetic and thermodynamic modeling studies
Sol gel
titania-silica
Kurumlar
Selçuk Üniversitesi
Selçuklu Turkey
Universiti Malaya
Kuala Lumpur Malaysia
Metrikler
9
Atıf
6
Yazar
4
Anahtar Kelime