Novel Synthesis of Histidine Derivative for Effective Treatment of Industrial Wastewater Containing Cadmium and Lead

In this study, we evaluated the efficacy of ligand, 2-{[(2-hydroxy-3-methoxyphenyl)methyl]amino}-3-(1 H -imidazol-4-yl)propanoic acid, in removing heavy metal ions from wastewater. To investigate the adsorption and/or complexation of Pb 2+ and Cd 2+ ions in aqueous solutions, we varied the condition...

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Bibliographic Details
Published in:	Russian journal of general chemistry Vol. 93; no. 5; pp. 1181 - 1192
Main Authors:	Belmir, C., Lahouel, A. A., Nehar, O. K., Louhibi, S., Roisnel, T.
Format:	Journal Article
Language:	English
Published:	Moscow Pleiades Publishing 01-05-2023 Springer Springer Nature B.V MAIK Nauka/Interperiodica
Subjects:	Adsorption Aqueous solutions Atomic absorption spectrophotometry Cadmium Chemical Sciences Chemistry Chemistry and Materials Science Chemistry/Food Science Diffraction Heavy metals Histidine Industrial wastes Lead Ligands NMR Nuclear magnetic resonance Propionic acid Purification Sewage Single crystals Wastewater treatment X-rays crystal structure cadmium wastewater heavy metals histidine lead
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Summary:	In this study, we evaluated the efficacy of ligand, 2-{[(2-hydroxy-3-methoxyphenyl)methyl]amino}-3-(1 H -imidazol-4-yl)propanoic acid, in removing heavy metal ions from wastewater. To investigate the adsorption and/or complexation of Pb 2+ and Cd 2+ ions in aqueous solutions, we varied the conditions such as contact time, temperature, and pH. We characterized the ligand using different techniques such as FTIR, 1 H NMR, and single-crystal X-ray diffraction. We used atomic absorption spectrophotometry to determine the concentration of metal ions in the aqueous samples. The adsorption process was fast, with maximum adsorption achieved within 10 minutes for Pb 2+ and Cd 2+ . The results revealed that at pH 2–8.92.62% of lead and 100% of cadmium were removed. Thermodynamic calculations suggest that physical forces predominantly drive the adsorption process of heavy metals onto the ligand. Our findings indicate that the ligand is capable of effectively reducing the concentration of the two heavy metals in wastewater to below 0.5 ppm, with an efficiency of 95.64% for lead and 100% for cadmium.
ISSN:	1070-3632 1608-3350
DOI:	10.1134/S1070363223050195