Comparison of different kinetic models for adsorption of acid blue ۶۲ as an environmental pollutant from aqueous solution onto mesoporous Silicate SBA-۱۵ modified by Tannic acid
Publish place: International Journal of Nano Dimension، Vol: 9، Issue: 1
Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJND-9-1_009
تاریخ نمایه سازی: 22 خرداد 1401
Abstract:
In this work, adsorption kinetics were investigated in order to remove the acid blue ۶۲ off the aqueous solutions using mesoporous silicate SBA-۱۵ loaded with tannic acid (tannin-SBA-۱۵). Nitrogen adsorption and desorption test (BET), X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FT-IR) analysis characterize synthesized composite. The impacts of some parameters such as PH, adsorbent dosage as well as contact time were studied and optimized at temperatures between ۲۵ to ۴۵ oC. The study also was conducted on intra-particle diffusion, pseudo first-order, pseudo second-order and Elovich kinetic models. In order to have the best correlation with the experimental data, the model of the second-order kinetics was discovered. The model of the intra-particle diffusion represents that both boundary layer and intra-particle diffusion processes control the mechanisms of adsorption of acid blue ۶۲ onto tannin-SBA-۱۵.
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Authors
Alireza Golshan Tafti
Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Abosaeed Rashidi
Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Habib-Allah Tayebi
Department of Textile Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran.
Mohammad Esmail Yazdanshenas
Department of Textile Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran.
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