Creating fertilizers from organic waste can help reduce fossil fuel consumption and promote sustainable production. Hydrothermal liquefaction (HTL), converts biomass into biocrude oil through a high-temperature, high-pressure process. Scientists used a fungal treatment to convert leftover wastewater into fertilizer for agricultural crops. Trametes versicolor, a white-rot fungus, was employed for this purpose to break the organic nitrogen compounds into ammonia or nitrate and potentially remove toxic components.