Enhanced Cadmium Removal by Raw Argan Shell Adsorbent: Experimental and Theoretical Investigations for Ecological Applications DOI Creative Commons

Fatima-Zahra Abahdou,

Maria Benbouzid, Khalid Bouiti

et al.

Physchem, Journal Year: 2025, Volume and Issue: 5(1), P. 13 - 13

Published: March 19, 2025

The removal of cadmium ions (Cd2+) using raw argan shells (ArS) was optimized through experimental and theoretical studies. Adsorption experiments revealed optimal conditions at an adsorbent dose 3.5 g, initial Cd2+ concentration 20 mg·L−1, a pH 8, achieving maximum sorption capacity 3.92 mg·g−1. kinetic analysis showed that the adsorption followed pseudo-second-order model (R2 = 0.98), Langmuir isotherm predicted 4 Thermodynamic indicated endothermic process, with ΔG° shifting from positive to negative as temperature increased, confirming is favored higher temperatures. Desorption studies demonstrated HCl most effective eluting agent, desorption efficiency 90.02%, by HNO3 (76.65%) CH3COOH (71.59%). varying efficiencies were attributed differences in acid strength ionic interactions Cd2+. This study demonstrates potential efficient, reusable, sustainable biosorbent for removal, offering promising solution water treatment environmental remediation.

Language: Английский

Enhanced Cadmium Removal by Raw Argan Shell Adsorbent: Experimental and Theoretical Investigations for Ecological Applications DOI Creative Commons

Fatima-Zahra Abahdou,

Maria Benbouzid, Khalid Bouiti

et al.

Physchem, Journal Year: 2025, Volume and Issue: 5(1), P. 13 - 13

Published: March 19, 2025

The removal of cadmium ions (Cd2+) using raw argan shells (ArS) was optimized through experimental and theoretical studies. Adsorption experiments revealed optimal conditions at an adsorbent dose 3.5 g, initial Cd2+ concentration 20 mg·L−1, a pH 8, achieving maximum sorption capacity 3.92 mg·g−1. kinetic analysis showed that the adsorption followed pseudo-second-order model (R2 = 0.98), Langmuir isotherm predicted 4 Thermodynamic indicated endothermic process, with ΔG° shifting from positive to negative as temperature increased, confirming is favored higher temperatures. Desorption studies demonstrated HCl most effective eluting agent, desorption efficiency 90.02%, by HNO3 (76.65%) CH3COOH (71.59%). varying efficiencies were attributed differences in acid strength ionic interactions Cd2+. This study demonstrates potential efficient, reusable, sustainable biosorbent for removal, offering promising solution water treatment environmental remediation.

Language: Английский

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