The Potential of Almond Skin as a Sustainable Biomaterial for Eliminating Azo Dye in Aqueous Media

• Published in: Water, air, and soil pollution air, and soil pollution, 2024-04, Vol.235 (4), p.257-257, Article 257
• Main Authors: Atmani, Fatiha, Balamane-Zizi, Ouafia, Akkari, Imane, Pazos, Marta, Yeddou-Mezenner, Nacera, Manseri, Amar, Kaci, Mohamed Mehdi
• Format: Article
• Language: English
• Subjects: Adsorption; Adsorptivity; air; almonds; Aqueous solutions; Atmospheric Protection/Air Quality Control/Air Pollution; Azo dyes; biocompatible materials; Biomaterials; Biomedical materials; Climate Change/Climate Change Impacts; desorption; Dyes; Earth and Environmental Science; Empirical analysis; Environment; Environmental cleanup; Equilibrium; Hydrogeology; Nuts; remediation; soil; Soil Science & Conservation; Sustainability; thermodynamics; water; Water Quality/Water Pollution
• ISSN: 0049-6979; 1573-2932
• DOI: 10.1007/s11270-024-07057-w

The production and consumption of almonds occur in several locations worldwide, yielding immense volumes of trash, mainly skin. The current study evaluated the adsorptive manners of almond skin (AS) without modification for clearing Basic Red 46 dye (BR46) from water. XRD, FTIR, SEM/EDX, BET, and pH pzc are among the many analytical tools used to investigate AS’s surface features. BR46 adsorption over AS was efficient at pH 8 and 2 g/L of AS, conferring 57.45 mg.g −1 within 120 min. The Langmuir was seen to accurately present the equilibrium curves, exhibiting q max  = 66.90 mg.g −1 , whereas the PSO model precisely resembled the empirical results. The thermodynamic results proclaimed that BR46 adsorption was favorable, with spontaneity (Δ G °