Low-cost, solar-powered water purification system using TiO₂ nanoparticles for photocatalytic treatment in rural communities.
Survey Study
Water & Wastewater Treatment
Solar irradiation: 6-8 hours/day. Flow rate: 5 L/hour. Batch size: 200 L per reactor. Ambient temperature.
95% removal of organic contaminants, 99%+ bacterial reduction, 80% heavy metal removal. Treatment capacity: 50,000 L/day. Cost: $0.02 per liter.
WHO water quality standards met in >95% of samples (n=450 tests). Cost-benefit analysis: 87% savings vs conventional treatment.
Successful
Seasonal variation in solar irradiation. Community training and maintenance. Catalyst replacement logistics in remote areas.
Integration with UV-LED for night operation. Mobile unit development. Exploring nitrogen-doped TiO₂ for visible light activity.