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• W3113129810 endingPage "127992" @default.
• W3113129810 startingPage "127992" @default.
• W3113129810 abstract "Zero-valent iron and biochar composite (ZVI/BC) is a prospective catalyst for activating persulfate and specific surface area (SSA) of ZVI/BC is one of the most important factors affecting its efficacy in the removal of environmental contaminants. However, the green fabrication of ZVI/BC with large SSA remains a challenge. In this study, ZVI/BC with a highly porous structure and large SSA fabricated by co-pyrolysis of K2FeO4 and bamboo was prepared and characterized. The large SSA stemmed from the catalytic and corrosive functions of K and the oxidation of K2FeO4 onto bamboo. ZVI/BC fabricated with 0.05 mol/L K2FeO4 (BC-Fe0.05) showed optimal sulfadiazine (SDZ) removal performance in the peroxydisulfate (PDS) activation system with complete removal after 10 min, as it showed the highest adsorptive ability of SDZ. Moreover, BC-Fe0.05 was able to remain stable after four cycles or 80 days of storage. Higher temperature, lower pH, and Cl− were beneficial to SDZ removal efficiency, whereas CO32– and HPO42− had inhibitory effects. Non-radical species (1O2) and radical species (SO4−, OH, and O2−) both contributed to SDZ degradation, and 1O2 was the most important reactive oxygen species. Four degradation pathways were proposed based on ten identified intermediates. Potential eco-toxicity analysis by ECOSAR suggested that most intermediates were less toxic than their parent compound. Overall, this study describes a green fabrication method for ZVI/BC with large SSA using K2FeO4 as the iron precursor. Generally, ZVI/BC with large SSA is an effective catalyst for activating persulfate to degrade antibiotics." @default.
• W3113129810 created "2020-12-21" @default.
• W3113129810 creator A5008935154 @default.
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• W3113129810 creator A5069084441 @default.
• W3113129810 date "2021-03-01" @default.
• W3113129810 modified "2023-10-15" @default.
• W3113129810 title "Zero-valent iron and biochar composite with high specific surface area via K2FeO4 fabrication enhances sulfadiazine removal by persulfate activation" @default.
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• W3113129810 doi "https://doi.org/10.1016/j.cej.2020.127992" @default.
• W3113129810 hasPublicationYear "2021" @default.
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