This research examined how different types of wood-decomposing fungi could help clean up toxic wastewater from olive oil production. The study found that certain fungi, especially Abortiporus biennis, can effectively break down harmful compounds in this waste through enzyme production, making it less toxic to plants and the environment. This has important real-world implications: • Provides an environmentally-friendly solution for treating olive mill waste that currently poses pollution problems • Demonstrates potential for using natural biological processes instead of harsh chemicals for waste treatment • Could help olive oil producers reduce their environmental impact while potentially creating valuable byproducts • Offers a sustainable approach that could be especially valuable for small, rural olive mills • Shows promise for developing similar fungal treatments for other types of agricultural and industrial waste