Open Access Research Article

Synthesis and Characterization of Modified Sepiolite for the Adsorptive Removal of Rhodamine B from Wastewater

Zhang Jianshu1,2, Shaomin Liu1,2*, Wang Xiaoiao1,2 and Xu Pengpeng1,2

1Key Laboratory of Safe and Effective Coal Mining (Anhui University of Science and Technology), Ministry of Education, China

2School of Earth Science and Environmental Engineering, Anhui University of Science and Technology, Huainan, China

Corresponding Author

Received Date: November 10, 2019;  Published Date: November 15, 2019


SDS/sepiolite was successfully synthesized as a low-cost adsorbent used in removal of Rhodamine B (RhB) from aqueous solution. The adsorbing capacity of RhB onto SDS/sepiolite shows a significant increase than the acid sepiolite. Analysis of the specific surface area, morphology, microstructure, chemical structure, chemical bonding substance and functional groups by BET, SEM, FT-IR proved the better adsorption capacity of SDS/sepiolite. The adsorption quantity was calculated to be 24.91mg/g under the optimum condition: SDS/sepiolite loadings of 0.02g, pH of 3 and 50 °C, the concentration of RhB is 35mg/L. obtained by analysis of influencing factors. It was found that a pseudo-second-order equation provided the best correlation to the process of adsorption, R2=0.999. Adsorption isotherm was fitted with Langmuir equation on different temperature, all R2>0.99. Re-adsorption showed SDS/sepiolite has reusable capacity in the adsorption of RhB in environmental protection.

Keywords: Sepiolite; Rhodamine B (RhB); Sodium dodecyl sulfate (SDS); Adsorption isotherm

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