Valorization of waste oyster shells via thermal and acid activation for Congo red dye adsorption from aqueous media

RSC Advances 2026 Open access

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Authors: Huynh Nhi Le, Hoai Phuong Nguyen Thi, Phương Anh Cao, Ba Cuong Nguyen, Van Bang Nguyen, Duong Duc La
DOI: 10.1039/d5ra08441e
Cited by: 3
References: 40

Abstract

) models, indicating chemisorptive affinity on an energetically heterogeneous surface. MOS is durable and regenerable (∼95% removal after five cycles). Density functional theory calculations corroborate strong dye-phosphate site interactions. The combined thermal-acid treatment thus yields a low-cost, reusable adsorbent suitable for practical dye-laden wastewater treatment.

Fields of Study & Subjects

Adsorption and biosorption for pollutant removal Phosphorus and nutrient management Layered Double Hydroxides Synthesis and Applications

Publication details

Journal / source
RSC Advances
Publisher
Royal Society of Chemistry (RSC)
Volume
16
Issue
1
Pages
861–871
Publication date
1 January 2026
Language
EN