Preparation and Characterization of Fluoride Adsorption Efficiency from Water of Mesoporous Hollow CaO Spheres

Li, Jie; Chang, Qigang; Ma, Wuwei; Lu, Joan; Tong, Yanbin; Zhou, Li

doi:10.1166/sam.2019.3605

Cited by 4 publications

(1 citation statement)

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“…Recently, the environmental pollution caused by colored wastewater has significantly increased due to the huge expansion of related industries, and threatened not only aquatic life but also that of human beings and animals [ 1 , 2 , 3 ]. Most of the colored wastewater containing dyes, employed as coloring agents, are being released from industrial fields such as leather, cosmetics, food and mineral processing, coatings, rubber and so on [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Bentonite with Polymer Brushes and Its Application as an Efficient Adsorbent for the Removal of Hazardous Dye Orange I

Guo

Umar

et al. 2020

Nanomaterials

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Poly(2-(dimethylamino)ethyl methacrylate)-grafted bentonite, marked as Bent-PDMAEMA, was designed and prepared by a surface-initiated atom transfer radical polymerization method for the first time in this study. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA) were applied to characterize the structure of Bent-PDMAEMA, which resulted in the successful synthesis of Bent-PDMAEMA. As a cationic adsorbent, the designed Bent-PDMAEMA was used to remove dye Orange I from wastewater. The adsorption property of Bent-PDMAEMA for Orange I dye was investigated under different experimental conditions, such as solution pH, initial dye concentration, contact time and temperature. Under the optimum conditions, the adsorption amount of Bent-PDMAEMA for Orange I dye could reach 700 mg·g−1, indicating the potential application of Bent-PDMAEMA for anionic dyes in the treatment of wastewater. Moreover, the experimental data fitted well with the Langmuir model. The adsorption process obeyed pseudo-second-order kinetic process mechanism.

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