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Nitric acid-treated Luffa cylindrica seeds as a sustainable biosorbent: Characterization and fixed-bed column performance for simultaneous removal of Ni (II), Cu (II), and Zn (II) from aqueous solutions

Crossref DOI link: https://doi.org/10.53022/oarjet.2026.11.1.0052

Published Online: 2026-07-31

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