This research transforms human urine into sustainable fertilizer using solar-powered systems that recover nutrients like nitrogen, phosphorus, and potassium. By turning toilets into decentralized fertilizer factories, the approach improves sanitation, reduces reliance on energy-intensive production, and provides affordable fertilizers to underserved farmers, supporting both environmental sustainability and economic development.

This research uses purple bacteria to treat dairy wastewater, removing nitrogen and phosphorus while producing nutrient-rich biomass. The process reduces pollution and transforms waste into potential biofertilizer, offering a sustainable alternative to chemical fertilizers and a circular solution for dairy farming and agriculture.