Fenton-adsorption process for leachates from two landfills (karstic-clays)
2021
Tests were carried out to analyze the efficiency of organic matter removal by Fenton/adsorption treatment of leachate from two landfills. The Fenton process was optimized with the following conditions: pH = 4, reaction time = 60 min, and ratios [COD/ H2O2] = 9, [Fe2+/H2O2] = 0.6. The treatment was tested in leachate from the city of Tuxtla Gutierrez, Chiapas, Mexico (clays) and compared with the removals previously obtained in the leachate from the landfill of the city of Merida, Yucatan, Mexico (karstic). In both, removals higher than 99% were obtained in chemical demand for oxygen, total organic carbon and color. In this research, it was found that the optimization of the Fenton process depends directly on the concentration of organic matter measured as chemical oxygen demand.
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