FeC2O4 center dot 2H(2)O enables sustainable conversion of hydrogen peroxide to hydroxyl radical for promoted mineralization and detoxification of sulfadimidine

Chen Na; Zhao Ying; Li MeiqiWang XiaobingPeng XingSun HongweiZhang Lizhi

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FeC2O4 center dot 2H(2)O enables sustainable conversion of hydrogen peroxide to hydroxyl radical for promoted mineralization and detoxification of sulfadimidine

机译：FeC2O4 center dot 2H(2)O enables sustainable conversion of hydrogen peroxide to hydroxyl radical for promoted mineralization and detoxification of sulfadimidine

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Safe treatment of antibiotics requires efficient removal of both antibiotics and their degraded intermediates. In this study, we demonstrate that FeC2O4 center dot 2H(2)O enables the more sustainable conversion of H2O2 to (OH)-O-center dot than commonly used FeSO4 center dot 7H(2)O, promoting the detoxification of a typical antibiotic sulfadimidine. It was found that the FeC2O4/H2O2 system could completely degrade 250 mg L-1 of sulfadimidine within 40 min at pH 3.0, along with decreasing the contents of chemical oxygen demand and total organic carbon by 295.0 and 33.5 mg L-1, respectively, more efficient than those in a classical Fenton system (FeSO4/H2O2). Analysis of sulfadimidine degraded intermediates and toxicity evaluation suggested that the FeC2O4/H2O2 treatment could more effectively decrease the overall toxicity of the sulfadimidine solution than the FeSO4/H2O2 counterpart. The sustainability of FeC2O4 center dot 2H(2)O in H2O2 conversion to (OH)-O-center dot was attributed to its controlled release of Fe2+ into the solution to prevent the quenching of (OH)-O-center dot by excessive Fe2+, as well as the simultaneous release of C2O42- to complex with Fe2+ and Fe3+, which could inhibit iron sludge formation and accelerate Fe3+/Fe2+ redox cycle. This study provides a promising Fenton system for the safe treatment of antibiotics and sheds light on the potential of FeC2O4 center dot 2H(2)O in environmental remediation.

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来源
《Journal of Hazardous Materials》 |2022年第1期|1-8|共8页
作者
Chen Na; Zhao Ying; Li MeiqiWang XiaobingPeng XingSun HongweiZhang Lizhi;
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作者单位

Cent China Normal Univ;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
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FeC2O4 center dot 2H(2)O; Fenton reaction; H2O2 conversion; Sulfadimidine; Detoxification;

FeC2O4 center dot 2H(2)O enables sustainable conversion of hydrogen peroxide to hydroxyl radical for promoted mineralization and detoxification of sulfadimidine

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