DefinePK

Abstract

Peat water can be used as drinking and raw industrial water if it has been treated to eliminate the chemicals content, especially organic carbon. In this research, heterogeneous photocatalytic by TiO2 photocatalyst could be an effective alternative solution to eliminate total organic carbon from the peat water under reduced side effects. TiO2 films as a photocatalyst synthesized by screen-printing technique was achieving 0.0053 mg/cm2 TiO2 loading. The characterization for the physicochemical properties of photocatalysts carried out by X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), Thermal Gravimetric Analysis (TGA) and Scanning Electron Micrograph (SEM). The smooth enough surface TiO2 anatase film was showed by SEM and the film thickness ± 0,175 µm on glass support. XRD analysis conducted on TiO2 photocatalyst powder inform the thin layer of photocatalytic TiO2 before and after shows only the peaks of crystalline anatase with an average crystal size of 142 nm . The results show that the specific surface area of photocatalytic TiO2 before coating 11.786 m2/g and increased 134 % after coated to support the glass but did not significantly change during the photocatalytic process. TiO2 film was success applied as solar UV-TiO2 photocatalytic reactor to degrade total organic carbon (TOC) in peat water for long time duration. TOC was degradated as 94 % after irradiation for 6 hours and water became neutral.