Continuous Tubular Photoreactor with TiO2 Nanoparticles Catalyst for Batik Industrial Wastewater Treatment

Like many other textile industries, batik requires a lot of water, and its use of different dyes and other chemicals accounts for most of the water pollution (17–20%). It can reduce light penetration, which in turn may decrease photosynthetic activity, and it may also have an impact on the quantity of oxygen available for the biodegradation of aquatic microbes. Many dyes, including diazo (-N〓N-), direct, and basic dyes, are challenging to work with using standard techniques, and the byproducts may occasionally be quite hazardous. Photocatalysis with various semiconductor materials has been the focus of investigations in recent years for the wastewater treatment application. Among many semiconductors, because of its strong photocatalytic activity, outstanding stability, lack of toxicity, and affordability, TiO2 is still the most extensively used photocatalyst. When a catalyst (TiO2) is exposed to ultraviolet (UV) light, hydroxyl radicals (•OH) are produced in the UV/TiO2 photocatalytic oxidation process. Organic materials therefore mineralize into CO2, H2O, and inorganic components. In this chapter the application of continuous tubular photoreactor with TiO2 nanoparticles as a catalyst for Batik wastewater treatment is reviewed.