Solar photoradiation-induced oxidation of NOM from surface water using immobilized coated glass spirals of TiO2

The Advanced oxidation processes sunlight/photocatalyst is common for remediation treatments. During the oxidation processes, organic matter decomposed into smaller compounds, which affect the characteristics of the treated effluent. In the present work, two types of commercial TiO2 (TiO2 P-25 Degussa and commercial TiO2 (A)) were supported on small glass spirals. The photooxidation of natural organic matters (NOMs) over immobilized TiO2 using parabolic solar collector was investigated. The effects of addition of H2O2 as electron acceptor and pH values were also investigated. The degradation of NOMs was followed up by analysis of total organic carbon (TOC) and UV absorbance at 254 nm (A(254)). It was found that NOMs were completely removed over immobilized TiO2 on glass spirals under sunlight irradiation after 120 min. Also, approximately 77% of TOC was reduced from groundwater. Upon obtained results, solar energy could be used for photocatalytic degradation of NOMs in ground and surface waters and therewith lighten the process of preparing them to the potable water.