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Fe/TiO_(2-x)可见光活化过硫酸盐降解双酚A的作用机制 被引量:1
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作者 付权超 许路 +2 位作者 刘沛华 金鑫 金鹏康 《中国环境科学》 EI CAS CSCD 北大核心 2023年第6期2841-2852,共12页
以TiO_(2)和FeCl_(3)为原料,通过水热-煅烧的方法成功制备了具有高可见光催化活性的Fe/TiO_(2-x)催化剂并将其应用于催化活化过硫酸盐降解BPA的研究中.结果表明,研究体系具有优秀的催化氧化能力,BPA(50mg/L)的降解率在40min内达到100%,... 以TiO_(2)和FeCl_(3)为原料,通过水热-煅烧的方法成功制备了具有高可见光催化活性的Fe/TiO_(2-x)催化剂并将其应用于催化活化过硫酸盐降解BPA的研究中.结果表明,研究体系具有优秀的催化氧化能力,BPA(50mg/L)的降解率在40min内达到100%,矿化度达到68.92%,研究同时对复合材料中有无Ti^(3+)的自掺杂以及催化剂的投加量、PS浓度对体系降解有机物效能的影响进行了探究.该体系可通过自生光电子还原Fe^(3+)实现三价铁和二价铁的高效循环.硫酸根自由基(SO_(4)^(-)•)和羟基自由基(•OH)为体系中主要的活性氧化物质,其中•OH贡献率超过66.2%.研究结果同时表明,碱性环境以及体系中的CO_(3)^(2-)对体系降解效能具有抑制作用. 展开更多
关键词 有机微污染物降解 过硫酸盐高级氧化 可见光催化 Ti^(3+)自掺杂TiO_(2) Fe量子点
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Using Magnetic Technique to Increase Efficiency of Organic Pollutants Biodegradation in Wastewater
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作者 Khalid Falih Hassan Suadad Awad Kadhim +1 位作者 Noor Nihad Baqer Elaaf Safa Al-deen Hassan 《Journal of Life Sciences》 2016年第1期21-32,共12页
The intensity of Magnetic field by 200, 300 and 400 gaos were selective to study their impacts on bacteria Bacillus, Pseudomonas and yeasts Candida dubliniensis, Candida glabrata, lssatchenkia orientalis and Rhodotoru... The intensity of Magnetic field by 200, 300 and 400 gaos were selective to study their impacts on bacteria Bacillus, Pseudomonas and yeasts Candida dubliniensis, Candida glabrata, lssatchenkia orientalis and Rhodotorula mucilaginosa growth and to reduce organic pollutants in wastewater by COD, TOC, TN and TP in concentrations of 180, 75, 52 and 84 ppm in pH 7.6 and treatment periods of 2, 4, 6 and 18 h in batch system. Results showed that magnetic field 300 gaos had higher ability to increase bacterial and yeasts growth by 400-600% in 18 h and reduced COD, TOC, TN and TP by 88, 85, 90 and 98.5% in same period treatment. While, the intensity of magnetic field 200 and 400 gaos have no effect on microorganisms growth and reducing organic pollutants. This study is first record for showing and explaining the positive effective of magnetic field on microorganisms growth. 展开更多
关键词 MAGNETIC YEAST bacteria increase growth BIODEGRADATION wastewater.
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