NDLI: Triethoxysilylpropylamine Modified Alkali Treated Wheat Straw : an Efficient Adsorbent for Methyl Orange Adsorption

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Triethoxysilylpropylamine Modified Alkali Treated Wheat Straw : an Efficient Adsorbent for Methyl Orange Adsorption

Content Provider	Semantic Scholar
Author	Saberikhah, Elham Pirbazari, Azadeh Ebrahimian Khakpour, Reza
Copyright Year	2018
Abstract	In this work, alkali treated wheat straw (ATWS) materials were simply modified by triethoxysilylpropylamine (TESPA) to prepare a novel adsorbent. The adsorption of methyl orange (MO) from aqueous solutions onto the modified wheat straw was studied. The adsorbent was characterized by scanning electron microscopy (SEM) and Fourier transform-infrared spectroscopy (FT-IR). FTIR results suggested that electrostatic interaction appears to be the principle mechanism of MO adsorption. The adsorption isotherm data were fitted to Langmuir, Sips and RedlichPeterson equations, and the Langmuir adsorption capacity, Qmax, reached 304.2 mgg , while a Qmax value of 75.8 mgg was found for unmodified wheat straw. Also, it was observed that the adsorption of MO increases with increasing temperature from 303 to 323K, and the process is endothermic in nature. The removal of MO by TESPAATWS followed pseudo-second order reaction kinetics based on Lagergren equations. Mechanism studies indicated that the adsorption of MO onto the TESPA-ATWS was mainly governed by external mass transport, where particle diffusion was the rate limiting step.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.cellulosechemtechnol.ro/pdf/CCT1-2(2018)/p.129-140.pdf
Alternate Webpage(s)	https://rtis2.ut.ac.ir/media/?activity_id=97969377&f_name=paper_upload&path=uploads/articles/papers/p.129-140.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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