Synthesis and Application of Nanoporous Adsorbents Based on Natural Resource in Dye Removal from Water

Ghonim, Samar M.W; Youssef, Hanan Farouk; Nassar, Moustafa; Shaltout, Mohamed H; Amin, Alaa S

doi:10.21608/ejchem.2022.114237.5195

Synthesis and Application of Nanoporous Adsorbents Based on Natural Resource in Dye Removal from Water

Document Type : Original Article

Authors

¹ chemistry department,faculty of science,Banha university,Egypt

² National Research Centre

³ Benha University

⁴ Reference laboratory for drinking water, Holding Company for water and waste water, Cairo, Egypt.

⁵ chemistry, science, Banha university

10.21608/ejchem.2022.114237.5195

Abstract

The current work is devoted to investigate the zeolitization ability of locally available volcanic rock with alkali-Andesitic composition (AR), using the conventional hydrothermal technique under mild lab conditions of 1.0M NaOH, 140 oC, and a duration of 1-3 days. The obtained product was a zeolite mixture (ZM) containing, Zeolite-W (synthetic analogue of Merlinoite zeolite (MER), Epistilbite (EPI), Zeolite-X (ZX), and Analcime (ANA). The efficiency of the formed ZM was tested as a novel inexpensive adsorbent for the removal of malachite green (MG) dye from contaminated water. The chemical composition and phases of the original rock and its alternative product mixture were investigated by XRF, XRD, SEM, EDAX techniques. To increase the removal efficiency, effecting parameters on adsorption process were investigated and optimized by batch design of experiments approach. Results indicated that, the adsorption isotherm was following Langmuir model with 91.66 mg/g a maximum adsorption capacity and the adsorption kinetics was most appropriately explained using pseudo-second-order model. Furthermore, the investigation of applying Dubinin Radushkevich has indicated that, the adsorption of MG is a physical process. Thermodynamics studies predicted an endothermic and spontaneous nature for the adsorption.

Keywords