Preparation and characterization of aluminum pillared K10 and KSF for adsorption of trimethoprim

Molu Z. B., YURDAKOÇ M. K.

MICROPOROUS AND MESOPOROUS MATERIALS, cilt.127, ss.50-60, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 127
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.micromeso.2009.06.027
  • Dergi Adı: MICROPOROUS AND MESOPOROUS MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.50-60
  • Anahtar Kelimeler: Aluminum pillared clay, Trimethoprim, Adsorption, Montmorillonite K10, Montmorillonite KSF, SOLID-PHASE EXTRACTION, PERSONAL CARE PRODUCTS, AQUEOUS-SOLUTIONS, WATER, MONTMORILLONITE, PHARMACEUTICALS, ANTIBIOTICS, EQUILIBRIUM, REMOVAL, ANTIMICROBIALS
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Montmorillonite KSF and K10 were used as precursor materials for synthesis of aluminum pillared K10 and KSF (Al-K10 and Al-KSF) which characterized by TGA, XRD, SEM and FT-IR spectroscopic analysis. The sorption of trimethoprim (TMP) which is commonly employed as an antibiotic onto Al-K10 and AlKSF was also investigated as a function of adsorbent dosage, solution pH, contact time and temperature. The adsorption kinetics was interpreted using pseudo-first-order, pseudo-second-order kinetic models and intraparticle diffusion model. The pseudo-second-order model provided the best correlation. Adsorption isotherm parameters were obtained from Freundlich, Langmuir and Dubinin-Radushkevich (DR) isotherm models. Adsorption of TMP onto Al-K10 and Al-KSF was physical in nature and ionexchange mechanism for DR equation, respectively. Al-K10 exhibits higher removal capacity at lower adsorbent dosages in comparison with Al-KSF. The removal capacity was increased by increasing pH. Delta H-0, Delta S-0 and Delta G(0) showed that adsorption of trimethoprim was endothermic, increasing randomness and not spontaneous in nature. (C) 2009 Elsevier Inc. All rights reserved.