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The generation of leachates containing heavy metals, salts, and organic contaminants like polycyclic aromatic hydrocarbons (PAHs) makes municipal solid waste landfills a major contributor to soil and water degradation. Because traditional remediation techniques are often cost-prohibitive, sustainable approaches such as phytoremediation have gained considerable attention. This research investigates the efficacy of Paulownia tomentosa (Oxytree) in restoring soils impacted by landfill leachates. In a controlled green...