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Adsorptive Removal of Cd²⁺ from Aqueous Solution Using Arecanut Husk-Derived Biochar under Different Experimental Conditions

Kuganesan Mithula, Dulith Abeykoon, Tharindra Weerakoon
Published: 2026-07-15
Heavy metals occur naturally in soil due to the weathering of parent materials.  At trace levels, they are nontoxic. Cadmium is a heavy metal that is highly toxic at low levels.  This study investigates the potential of Arecanut husk-derived biochar as a low-cost and eco-friendly adsorbent for...