Abstract

The main object of this work is to remove Amido black 10B using a new type of bentonite-based adsorbent with cationic groups by the modification of polyallyl amines between the interlayers of bentonite. Fourier transform infrared, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy were used to characterize the functionalized bentonite. A series of batch adsorption experiments were performed. The maximum adsorption amount was 144.08 mg g−1 when the pH was 2 and the contact time was 120 min. In addition, the equilibrium isotherm data were analyzed using Langmuir and Freundlich isotherm models, while only the Langmuir model could provide a high correlation. Therefore, this study provided a new functionalized bentonite as a low-cost adsorbent for dye removal from water.

Highlights

  • Zhang et al investigated the adsorption of Amido Black 10B from aqueous solutions onto a Zr (IV) surface-immobilized cross-linked chitosan/bentonite composite [4]

  • Compared with Bent, the adsorption amount of Bent-polyallyl amines (PAA) for AB10B obviously increased depended on the pH value

  • The characterization results of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and scanning electron microscopy (SEM) demonstrated that PAA was modified successfully onto interlayers of bentonite

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Summary

Introduction

Zhang et al investigated the adsorption of Amido Black 10B from aqueous solutions onto a Zr (IV) surface-immobilized cross-linked chitosan/bentonite composite [4]. Zhang et al prepared a crosslinked quaternized chitosan/bentonite composite for the removal of Amino black 10B from aqueous solutions [6]. For use in practical applications, Li et practical applications, Li et al prepared a chitosan magnetic composite adsorbent modified withal. A prepared a chitosan magnetic composite adsorbent modified with a orange quaternary ammonium saltThis for quaternary ammonium salt for the removal of Cr(VI). The reason might be natural Bent has limited adsorption capability, which restricts its practical applications [24]. Bent should be modified with some improve itsgroups adsorption capability for dyes. The novel material was used to adsorb Amido Black 10B as a representative of the anionic dyes.

Materials
Modification of Bent
Characterizations
Batch Adsorption Experiments
Discussion
Results approximately
Results in Compared
Effect of pH
Effect of Temperature
Adsorption Isotherm
Adsorption Kinetics
Conclusions
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