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Decolorization and Degradation of Dyes with Mediated Fenton Reaction
Author(s) -
Goodell Barry,
Qian Yuhui,
Jellison Jody,
Richard Mike
Publication year - 2004
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.1002/j.1554-7531.2004.tb00233.x
Subject(s) - degradation (telecommunications) , chemistry , environmental chemistry , pulp and paper industry , computer science , engineering , telecommunications
A mediated Fenton system has been evaluated for decolorization of several types of dyes. The result shows that the Fenton system with a dihydroxybenzoic acid (DHBA) chelator‐mediator effectively reduced the color of a diluted solution of Carta Yellow RW liquid, Carta Yellow G liquid, and Cartasol Red 2GF liquid dye to a colorless level after 90 minutes of treatment with 100 l M iron II (Fe[II]), 100 l M DHBA, and 10 μM hydrogen peroxide (H 2 O 2 ) at room temperature. Our results show that compared to a neat Fenton process, the mediated Fenton decolorization process increased the production, and therefore the effective longevity, of hydroxyl radical (OH) species to increase the decolorization efficiency. Our results suggest that application of this system would also result in an increase in dissolved oxygen (DO) in solution, which in turn would result in reduction of chemical oxygen demand (COD), biochemical oxygen demand (BOD), and total organic carbon (TOC).