کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
74326 | 49088 | 2010 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation and characterization of aluminum pillared K10 and KSF for adsorption of trimethoprim Preparation and characterization of aluminum pillared K10 and KSF for adsorption of trimethoprim](/preview/png/74326.png)
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 Al-KSF 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 ion-exchange 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. ΔH0, ΔS0 and ΔG0 showed that adsorption of trimethoprim was endothermic, increasing randomness and not spontaneous in nature.
Journal: Microporous and Mesoporous Materials - Volume 127, Issues 1–2, January 2010, Pages 50–60