Application of solar photo-Fenton process to treat Eriochrome Black-T in water and wastewater from water hardness determination
International Journal of Environmental Science and Technology(2024)
摘要
The determination of water hardness is performed by EDTA complexometric titration, in the presence of Eriochrome Black T (EBT) as a visual end point indicator. EBT is an azo dye that can be an environmental problem. Therefore, the present work investigated the possibility of using the solar photo-Fenton system as a treatment to remove EBT from the wastewater of hardness determination process. The solar photo-Fenton reagents were potassium ferrioxalate, at 1 mmol L−1, as the catalyst and the source of iron, and hydrogen peroxide, at 10 mmol L−1. The efficiency of the treatment was monitored by COD, BOD, TOC, HPLC, and ecotoxicological analyses. Organic matter removal values higher than 60
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关键词
Solar photo-Fenton,Eriochrome Black T,Ecotoxicity,Potassium ferrioxalate,Azo dye degradation,Iron complexes
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