Journal
APPLIED WATER SCIENCE
Volume 11, Issue 7, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13201-021-01435-z
Keywords
Mesoporous; Silicalite-1; Methylene blue; Adsorption; Kinetics
Categories
Funding
- [KMUTNB-63-Post-03]
- [KMUTNB-64-03]
- [KMUTNB-BasicR-64-16]
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In this study, a mesoporous silicalite-1 was developed using CMC as a template for the removal of MB from aqueous solution. The synthesized silicalite-1 was characterized through various methods and the adsorption parameters for the removal of MB dye were investigated. The results showed that the developed silicalite-1 exhibited efficient removal of MB dye and maintained high removal efficiency even after multiple adsorption-desorption cycles.
In the present work, we have developed a mesoporous silicalite-1 using CMC as a template for the removal of MB from aqueous solution. The synthesized silicalite-1 were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), Energy-dispersive X-ray spectroscopy (EDAX) and N-2 adsorption-desorption isotherm (BET). XRD and FT-IR analysis confirmed the formation of crystallinity and development of MFI structure in the mesoporous silicalite-1. The adsorption of MB dye on mesoporous silicalite-1 was conducted by batch adsorption method. The effect of various parameters such as adsorbent dosage, initial dye concentration, contact time and temperature on the dye uptake ability of silicalite-1 was investigated. The operating parameters for the maximum adsorption are silicalite-1 dosage (0.1 wt%), contact time (240 min), initial dye concentration (10 ppm) and temperature (30 celcius). The MB dye removal onto mesoporous silicalite-1 followed pseudo-second-order kinetic and Freundlich isotherm. The silicalite-1 exhibits 86% removal efficiency even after six adsorption-desorption cycle. Therefore, the developed mesoporous silicalite-1 is an effective eco-friendly adsorbent for MB dye removal from aqueous environment.
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