NDLI: Synthesis, characterization and adsorption behaviors of Faujasite-type zeolites towards methylene blue

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Synthesis, characterization and adsorption behaviors of Faujasite-type zeolites towards methylene blue

Content Provider	Scilit
Author	Zhang, Yunhui Wang, Zhongwei Zhang, Zhenguang Wu, Liuming Fan, Yingju Sun, Zhongxi
Copyright Year	2019
Description	Journal: Iop Conference Series: Materials Science and Engineering The conventional hydrothermal method was applied to synthesize two microporous Faujasite-type zeolite (FAU) with model substances (sodium silicate, sodium hydroxide and aluminium). The chemical formula of FAU-1 and FAU-2 were $0.99Na_{2}O·Al_{2}O_{3}·4.07SiO_{2}·5.7H_{2}$O and $1.03Na_{2}O·Al_{2}O_{3}·3.8SiO_{2}·8H_{2}$O, respectively. The isoelectric points (IEP) were around 4.5, and the surface area were 244.50 $m^{2}$/g and 485.85 $m^{2}$/g. The adsorption kinetics, intra-particle diffusion and isotherms of methylene blue (MB) on two FAUs were reported from batch adsorption tests. The adsorption obeys pseudo-first-order model and reached equilibrium within 80 min. Intra-particle diffusion is the rate-determining step and the removal decreased with the increase of pH. The adsorption follows BET model, indicating multi-molecular layer adsorption. The adsorption capacity of FAU-2 towards MB is 147.19 mg/g, more than doubles that of FAU-1 (62.74 mg/g). Adsorption mechanism may include ion exchange, hydrogen bonding and hydrophobic interactions. This study may provide guidance for the hydrothermal synthesis of FAU and the universal theoretical basis for its practical application in MB contaminated wastewater treatment.
Related Links	https://iopscience.iop.org/article/10.1088/1757-899X/592/1/012017/pdf
ISSN	17578981
e-ISSN	1757899X
DOI	10.1088/1757-899x/592/1/012017
Journal	Iop Conference Series: Materials Science and Engineering
Issue Number	1
Volume Number	592
Language	English
Publisher	IOP Publishing
Publisher Date	2019-08-01
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Materials Science and Engineering Water Science and Technology
Content Type	Text
Resource Type	Article

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