Removal of 17β-estrodial in a bio-electro-Fenton system: contribution of oxidation and generation of hydroxyl radicals with the Fenton reaction and carbon felt cathode
Removal of 17β-estrodial in a bio-electro-Fenton system: contribution of oxidation and generation of hydroxyl radicals with the Fenton reaction and carbon felt cathode
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生物电芬顿系统中 17β-雌二醇的去除：芬顿反应和碳毡阴极氧化和羟基自由基生成的贡献
DOI：
10.1039/c5ra08053c
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发表时间：
2015-06
期刊：
影响因子：
3.9
通讯作者：
Sun Weiling
中科院分区：
文献类型：
--
作者：
Zeng Yaqiong;Li Jie;Zhang Yingyuan;Sun Weiling
优化了以Fe@Fe2O3/非催化碳毡（NCF）为阴极的生物电芬顿（BEF）体系，并证实了该体系产生的羟基自由基对E2的去除效果。外部阻力是影响E2去除的最重要因素。当外电阻与内电阻接近时，Fe@Fe2O3/NCF和NCF体系的E2去除率均超过90%。吸附实验表明，氧化起着重要作用，而不是阴极吸附E2去除。在Fe@Fe2O3/NCF系统中检测到高达0.54 mmol L−1的羟基自由基，主要通过芬顿反应产生。而在NCF系统中，也可检测到约0.059 mmol L−1的羟基自由基，可能是通过燃烧产生的碳毡中所含的持久自由基活化H2 O2产生的。虽然BEF系统被证实具有更强的氧化能力，但配备NCF的微生物燃料电池已经有效地去除痕量有机污染物。
A bio-electro-Fenton (BEF) system equipped with a Fe@Fe2O3/non-catalyzed carbon felt (NCF) cathode was optimized, and the generation of hydroxyl radicals was confirmed for E2 removal. External resistance was the most significant factor influencing E2 removal. When the external resistance was close to the internal one, both the Fe@Fe2O3/NCF and NCF systems removed over 90% of E2. Sorption experiments suggested that oxidation played a major role in E2 removal instead of cathode sorption. Up to 0.54 mmol L−1 of hydroxyl radicals were detected in the Fe@Fe2O3/NCF system, mostly produced via the Fenton reaction. While in the NCF system, hydroxyl radicals were also detectable at around 0.059 mmol L−1, possibly produced through the activation of H2O2 by persistent free radicals contained in the combustion-generated carbon felt. Although the BEF system was confirmed to possess a much stronger oxidation capacity, a microbial fuel cell equipped with NCF is already efficient in removing trace amounts of organic pollutants.
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影响因子：
11.4
作者：
N. Xu;Yingyuan Zhang;H. Tao;Shungui Zhou;Yaqiong Zeng
通讯作者：
N. Xu;Yingyuan Zhang;H. Tao;Shungui Zhou;Yaqiong Zeng
影响因子：
6.2
作者：
Tai, C;Peng, JF;Zou, H
通讯作者：
Zou, H
影响因子：
11.4
作者：
Fang, Guodong;Gao, Juan;Zhou, Dongmei
通讯作者：
Zhou, Dongmei
DOI：
10.2166/wst.2011.339
发表时间：
2011-05
期刊：
Water science and technology : a journal of the International Association on Water Pollution Research
影响因子：
--
作者：
Jana Nakrst;Mirjana Bistan;T. Tišler;J. Zagorc-končan;J. Derco;A. Z. Gotvajn
通讯作者：
Jana Nakrst;Mirjana Bistan;T. Tišler;J. Zagorc-končan;J. Derco;A. Z. Gotvajn
影响因子：
12.8
作者：
Hao Wu;Zhihui Ai;Lizhi Zhang
通讯作者：
Hao Wu;Zhihui Ai;Lizhi Zhang