Photo assisted mineralization of amaranth by iron containing well-dawson heteropoly anion

Dyes, phenols, pesticides, fertilizers, detergents and many other chemical products are disposed off directly into the environment, without being treated and without an effective treatment strategy, which creates water pollution. This problem can be solved by photocatalytic degradation. Photoassisted mineralization of Amaranth was carried out using iron containing Well-Dawson Heteropoly anion with visible light. In the present investigation, the effect of various operational parameters like effect of pH, concentration of dye, amount of semiconductor and light intensity were studied. Kinetic studies reveal that the photocatalytic degradation follows pseudo-first order kinetics. A tentative mechanism for the photocatalytic degradation of Amaranth has been proposed.