Improving copper ions adsorption using Ca-modified NaY zeolite synthesized from calcined rice husk ash

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2024-12-02 DOI:10.1007/s10971-024-06637-w

Nguyen H. Ngoan, Luong H. V. Thanh, Le T. Phu, Dang H. Giao, Ngo T. N. Mai

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Abstract

In this study, NaY zeolite was fabricated from calcined rice husk ash using a hydrothermal method, followed by modification with calcium, which significantly enhanced its capacity to adsorb copper ions. Advanced analytical techniques confirmed the successful creation of Ca-modified NaY zeolite, which boasted a CaO/Al₂O₃ ratio of 1.0, a crystallization time of just 24 h, and an impressive crystallinity of 95%. This zeolite featured a microporous structure with a pore diameter of 1.139 nm and a specific surface area of 321.1 m²/g. The optimal conditions for copper ion adsorption were pinpointed to a pH of 4.0, an initial concentration of 50 mg/L, and a modest adsorbent mass of 0.1 g over a contact time of 60 min, achieving a remarkable maximum capacity of 75.18 mg/g. The kinetic and isotherm analyses revealed a reversible adsorption process characterized by uniform surface energy, enabling the adsorbent to facilitate multilayer adsorption through physical interactions. These compelling findings underscore the exciting potential of Ca-NaY zeolite derived from rice husk ash as a sustainable solution for effectively removing metal ions from wastewater, paving the way for innovative applications in environmental remediation and resource recovery.

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.