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• W4294926348 endingPage "108553" @default.
• W4294926348 startingPage "108553" @default.
• W4294926348 abstract "It is generally challenging to design efficient, low-cost, and environmentally friendly persulfate catalytic materials for wastewater purification. We report a simple strategy to synthesize a steel converter slag-sludge carbon catalyst with steel converter slag as a template, suspended sludge as a precursor, and one-step pyrolysis. A persulfate activator was used to remove phenol and organic matter from actual wastewater leachate. The catalyst had a shell structure, a large surface area, abundant adsorption groups, and polymetallic catalytic capacity. The catalytic capacity depended on zero-valent iron (Fe 0 ), which effectively leached active Fe 2+ composite to produce hydroxyl and persulfate radicals by activating persulfate. The maximum phenol degradation was 94.5% in 55 min with 2 mM persulfate, 100 mg/L catalyst, and 20 mg/L phenol, which was 6 and 44 times greater than that of pure sludge carbon and steel converter slag, respectively. For actual wastewater leachate, the maximum removal rate of total organic carbon was 77.75% with 0.15 M persulfate, 50 g/L catalyst, and 1125 mg/L total organic carbon; all the fluorescent substances were removed. This work provides a new approach for designing persulfate catalysts derived from green resources. Further, our approach is practical for the treatment of wastewater that has high concentrations of organic material. • A composite catalyst steel converter slag-sludge carbon was synthesized. • The catalyst had a stable core-shell mesoporous structure and abundant active sites. • The maximum phenol degradation was 94.5% in 55 min in catalyst/persulfate system. • Organic compounds removed 77.75%, fluorescent substances all removed by catalyst. • Organics removal by free radical oxidation, surface adsorption, complexation." @default.
• W4294926348 created "2022-09-08" @default.
• W4294926348 creator A5023516768 @default.
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• W4294926348 date "2022-10-01" @default.
• W4294926348 modified "2023-09-26" @default.
• W4294926348 title "Magnetic-activated carbon composites derived from sludge and steel converter slag for wastewater treatment" @default.
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• W4294926348 doi "https://doi.org/10.1016/j.jece.2022.108553" @default.
• W4294926348 hasPublicationYear "2022" @default.
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