Real textile effluent degradation assisted by Fe/PVA and magnetic waste
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ABSTRACT Organic compounds present on industrial wastes are mostly resistant to conventional biological and chemical treatments. Textile industry has presented several environmental problems mainly related to the use and management of water resources. It has a high consumption of potable and underground water in its processes. These wastewaters are one of the most polluting of the industrial area. The Advanced Oxidation Process AOPs allow to decompose organic matter in a non-selectively way by the attack of •OH radicals. This work presents the characterization and application of several catalysts for real textile effluent treatment (from an industry dedicated to dyeing and finishing clothes; in Buenos Aires province).Three different iron catalysts are used: 1º) Synthesized in a laboratory, 2º) Waste from metallurgic industry and 3º) commercial steel wool. These are characterized using SEM/EDX. The effluent is characterized before and after treatment, where the degradation is following by measure of % COD, pH and Fe2+ content in solution by condition different of treatment. The effect of catalysts on the applied treatment is studied, which consists of an oxidation of organic matter by action of Fe species and H2O2 in solution, assuming a Fenton process a pH neutral. The results show that the three catalysts are efficient for use in the process of degradation of the real textile effluent. In all cases, the COD final values are suitable for discharge into a sewer system.