Selectivity of Ni/Al LDH Material Supported by Green Tea Leaf (Camellia sinensis) Extract as an Adsorbent for Removing Cationic Dyes in Wastewater Treatment

Amri, Amri
Wibiyan, Sahrul
Fitri, Erni Salasia

Indonesian Journal of Material Research
Vol. 3 No. 1 (2025): March

Water pollution due to synthetic dye waste is a serious environmental problem, so an effective method is needed to overcome it, including using adsorption. In this study, Ni/Al-Cs materials were synthesized and characterized to evaluate their selectivity towards Rhodamine B (RhB), Malachite Green (MG), and Methylene Blue (MB) dyes. Adsorption selectivity tests were conducted using UV-Vis spectroscopy to determine changes in dye concentration before and after interaction with the material. Results showed that Ni/Al-Cs had the highest adsorption capacity towards MG, followed by MB and RhB. With its selective adsorption properties, Ni/Al-Cs material has the potential to be used as an effective adsorbent in the treatment of dye effluents in aquatic environments, especially MG dye.