Photocatalytic Hydrogen Production from Urine Using Sr-Doped TiO2 Photocatalyst with Subsequent Phosphorus Recovery via Struvite Crystallization

Currently, the discharge of wastewater and utilization phosphorus (P) in human activities cause some environmental problems, such as high organic pollutants aquatic environments which results dirty water sources, a shortage phosphate rock reserves due to demand P. Therefore, fuel energy struvite crystallization from waste sources can be considered interesting alternatives. In this work, modified catalyst for hydrogen production, along with solving was examined. The strontium (Sr) doped-titanium dioxide (TiO2) nanoparticles were synthesized by wetness impregnation method. characterized using UV-vis spectroscopy (UV-vis), photoluminescence (PL), X-ray diffraction (XRD), scanning electron microscopy energy-dispersive (SEM-EDS). Sr-doped TiO2 catalysts had been utilized photocatalyst production synthetic urine (a representative source). doping content Sr varied 0.5, 1, 2, 4%, photocatalytic performances compared pristine nanoparticles. showed that 1% highest activity decreased amount chemical oxygen (COD) urine. Subsequently, P could recovered treated form struvite.