Study on adsorption of rhodamine B onto Beta zeolites by tuning SiO2/Al2O3 ratio

Zhi-Lin Cheng; Yan-Xiang Li; Zan Liu

doi:10.1016/j.ecoenv.2017.11.005

Study on adsorption of rhodamine B onto Beta zeolites by tuning SiO₂/Al₂O₃ ratio

Ecotoxicol Environ Saf. 2018 Feb:148:585-592. doi: 10.1016/j.ecoenv.2017.11.005. Epub 2017 Nov 9.

Authors

Zhi-Lin Cheng¹, Yan-Xiang Li², Zan Liu²

Affiliations

¹ School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China. Electronic address: zlcheng224@126.com.
² School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.

PMID: 29127821
DOI: 10.1016/j.ecoenv.2017.11.005

Abstract

The exploration of the relationship between zeolite composition and adsorption performance favored to facilitate its better application in removal of the hazardous substances from water. The adsorption capacity of rhodamine B (RB) onto Beta zeolite from aqueous solution was reported. The relationship between SiO₂/Al₂O₃ ratio and adsorption capacity of Beta zeolite for RB was explored. The structure and physical properties of Beta zeolites with various SiO₂/Al₂O₃ ratios were determined by XRD, FTIR, TEM, BET, UV-vis and so on characterizations. The adsorption behavior of rhodamine B onto Beta zeolite matched to Langmuir adsorption isotherm and more suitable description for the adsorption kinetics was a pseudo-second-order reaction model. The maximum adsorption capacity of the as-prepared Beta zeolite with SiO₂/Al₂O₃ = 18.4 was up to 27.97mg/g.

Keywords: Adsorption; Beta zeolite; Dynamics; Isotherms; Rhodamine B.

MeSH terms

Adsorption
Aluminum Oxide / chemistry
Kinetics
Models, Theoretical
Rhodamines / analysis*
Silicon Dioxide / chemistry
Solutions
Surface Properties
Water Pollutants, Chemical / analysis*
Water Purification / methods*
Zeolites / chemistry*

Substances

Rhodamines
Solutions
Water Pollutants, Chemical
Zeolites
Silicon Dioxide
rhodamine B
Aluminum Oxide