March 15, 2025 | Catalysts |
The study, conducted by institutions in Malaysia, Bangladesh, and India, explored a sustainable method to address the environmental challenges posed by landfill leachate, a wastewater rich in organic matter and toxic pollutants. The researchers proposed the green synthesis of copper oxide nanoparticles (CuO NPs) using durian (Durio zibethinus) husk extract as a natural reducing and stabilizing agent. This approach not only provides an alternative use for agricultural waste but also avoids the need for harmful chemicals and high energy inputs during synthesis.
Characterization of the nanoparticles through SEM, HR-TEM, XRD, EDX, FTIR, and UV-Vis spectroscopy confirmed their structural and chemical properties. The CuO NPs were predominantly spherical, with an average size of 35–50 nm and minimal aggregation. XRD analysis revealed a crystalline monoclinic phase, while EDX confirmed a high purity composition of copper and oxygen.
Preliminary photocatalytic tests showed that the green-synthesized CuO NPs achieved up to a 79% reduction in chemical oxygen demand (COD) in landfill leachate. These results highlight the potential of CuO NPs synthesized from durian husk as an effective and environmentally friendly material for wastewater treatment, offering a sustainable contribution to solid waste management and environmental remediation strategies.
