1. 标题：Iron modified bentonite: Enhanced adsorption performance for organic pollutant and its regeneration by heterogeneous visible light photo-Fenton process at circumneutral pH

作者：Gao, Yaowen; Guo, Yongzhao; Zhang, Hui

来源出版物：JOURNAL OF HAZARDOUS MATERIALS 卷：302 页：105-113 DOI：10.1016/j.jhazmat.2015.09.036 出版年：JAN 25 2016

摘要：Iron modified bentonite (FeMB) was prepared and used as an inexpensive adsorbent to rapidly remove organic pollutant (Rhodamine B, RhB) from aqueous solution. The iron modification significantly improved the adsorption performance of FeMB for RhB and permitted an easy separation of FeMB from the treated effluent. The equilibrium adsorption studies indicated that the dye molecules obeyed Langmuir type of adsorption with the calculated maximum adsorption capacity of 168.13 mg g(-1) for FeMB. The heterogeneous photo-Fenton process operated at circumneutral pH in the presence of visible light irradiation was found to be effective for the regeneration of the spent FeMB. Furthermore, the regeneration efficiency of as high as 79% was still achieved after 5 consecutive adsorption-regeneration cycles. Considering that, the visible light photo-Fenton approach could be applied as an excellent alternative for regenerating clay-based adsorbents by avoiding the use of dissolved iron salts.

入藏号：WOS:000366225300013

文献类型：Article

语种：English

作者关键词：Iron modification, Adsorption, Visible light photo-Fenton, Regeneration, Circumneutral pH

扩展关键词：GRANULAR ACTIVATED CARBON; AQUEOUS-SOLUTION; ORANGE-II; PHOTOCATALYTIC DEGRADATION; HYDROGEN-PEROXIDE; DYE; CATALYST; REMOVAL; CLAY; OXIDATION

通讯作者地址：Zhang, Hui; Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China

电子邮件地址：eeng@whu.edu.cn

地址：[Gao, Yaowen; Guo, Yongzhao; Zhang, Hui]Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

研究方向：Engineering; Environmental Sciences & Ecology

ISSN：0304-3894

eISSN:1873-3336

2. 标题：Ultrasound-assisted heterogeneous Fenton-like degradation of tetracycline over a magnetite catalyst

作者：Hou, Liwei; Wang, Liguo; Royer, Sebastien; Zhang, Hui

来源出版物：JOURNAL OF HAZARDOUS MATERIALS 卷：302页：458-467 DOI：10.1016/j.jhazmat.2015.09.033 出版年：JAN 25 2016

摘要：The degradation of tetracycline over Fe3O4 catalyst was studied by using a coupled ultrasound/heterogeneous Fenton process. The effects of some key reaction parameters, the evolution of toxicity, and the reaction mechanism were investigated. Experimental results showed that the stability of catalyst was significantly improved when ultrasound was employed. Under optimal conditions, 93.6% of tetracycline was removed after 60 min of treatment. The removal efficiency of the total organic carbon (TOC) at 60 min was 31.8%. The surface hydroxyl radicals were identified as the major reactive species during the oxidation process. Toxicity tests with Daphnia magna indicated that the toxicity of the solution increased during the first 60 min and then decreased as the oxidation proceeded.

入藏号：WOS:000366225300051

文献类型：Article

语种：English

作者关键词：Magnetite, Ultrasound, Heterogeneous Fenton, Tetracycline, Acute toxicity

扩展关键词：ACID ORANGE 7; OXIDATION PROCESSES; ANTIBIOTIC TETRACYCLINE; HYDROXYL RADICALS; AQUEOUS-SOLUTION; BISPHENOL-A; XPS SPECTRA; OXIDE; DECOLORIZATION; IRON

通讯作者地址：Royer, S; Univ Poitiers, CNRS, IC2MP, UMR 7285, 4 Rue Michel Brunet, F-86022 Poitiers, France.

电子邮件地址：sebastien.royer@univ-poitiers.fr; eeng@whu.edu.cn

地址：

[Hou, Liwei; Wang, Liguo; Zhang, Hui] Wuhan Univ, Dept Environm Engn, Wuhan 430079, Peoples R China.

[Hou, Liwei] Shanghai Maritime Univ, Coll Ocean Sci & Engn, Shanghai 201306, Peoples R China.

[Hou, Liwei; Royer, Sebastien] Univ Poitiers, CNRS, IC2MP, UMR 7285, F-86022 Poitiers, France.

研究方向：Engineering; Environmental Sciences & Ecology

ISSN：0304-3894

eISSN:1873-3336

影响因子（2014）：4.529