Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous Solution
An emerging pollutant, diatrizoate (DTZ) has been frequently detected in aqueous solution. Unique reticular peanut shell biochar (BC)-supported nano zero-valent iron (nZVI) composite (nZVI/BC) was successfully synthesized and used as a catalyst for activating persulfate (PS) to promote the removal o...
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doaj-99670b529013451598b5833233c7a5642020-11-24T22:23:22ZengMDPI AGInternational Journal of Environmental Research and Public Health1660-46012018-09-01159193710.3390/ijerph15091937ijerph15091937Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous SolutionJian Xu0Xueliang Zhang1Cheng Sun2Huan He3Yuxuan Dai4Shaogui Yang5Yusuo Lin6Xinhua Zhan7Qun Li8Yan Zhou9State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, ChinaNanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, ChinaState Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, ChinaSchool of Environment, Nanjing Normal University, Nanjing 210023, ChinaState Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, ChinaSchool of Environment, Nanjing Normal University, Nanjing 210023, ChinaNanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, ChinaCollege of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, ChinaNanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, ChinaNanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, ChinaAn emerging pollutant, diatrizoate (DTZ) has been frequently detected in aqueous solution. Unique reticular peanut shell biochar (BC)-supported nano zero-valent iron (nZVI) composite (nZVI/BC) was successfully synthesized and used as a catalyst for activating persulfate (PS) to promote the removal of DTZ. The structure and morphology of the nanocomposite materials were characterized by scanning electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller measurements, and Fourier transform infrared spectroscopy. The degradation of DTZ (20 mg L−1) was achieved by activating PS with the nanocomposite material. The removal of DTZ reached nearly 100% using 25 mM PS and 0.45 g L−1 nZVI/2BC (mass ratio of nZVI and BC at 1:2) nanocomposite material at pH 3.0 and 25 °C. Influencing factors, such as dosages of nZVI/2BC and PS, temperature, and pH were also investigated. The mechanisms of PS activation with nZVI/2BC were discussed, including BC property, electron transfer, and the identification of free radicals in the reaction. The findings demonstrated that nZVI/BC-PS (peanut shell BC-supported nZVI activating PS) is a promising material for the treatment of refractory organic pollutants.http://www.mdpi.com/1660-4601/15/9/1937nano zero-valent ironpeanut shell biocharpersulfate activateddiatrizoatedegradation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jian Xu Xueliang Zhang Cheng Sun Huan He Yuxuan Dai Shaogui Yang Yusuo Lin Xinhua Zhan Qun Li Yan Zhou |
spellingShingle |
Jian Xu Xueliang Zhang Cheng Sun Huan He Yuxuan Dai Shaogui Yang Yusuo Lin Xinhua Zhan Qun Li Yan Zhou Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous Solution International Journal of Environmental Research and Public Health nano zero-valent iron peanut shell biochar persulfate activated diatrizoate degradation |
author_facet |
Jian Xu Xueliang Zhang Cheng Sun Huan He Yuxuan Dai Shaogui Yang Yusuo Lin Xinhua Zhan Qun Li Yan Zhou |
author_sort |
Jian Xu |
title |
Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous Solution |
title_short |
Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous Solution |
title_full |
Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous Solution |
title_fullStr |
Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous Solution |
title_full_unstemmed |
Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous Solution |
title_sort |
catalytic degradation of diatrizoate by persulfate activation with peanut shell biochar-supported nano zero-valent iron in aqueous solution |
publisher |
MDPI AG |
series |
International Journal of Environmental Research and Public Health |
issn |
1660-4601 |
publishDate |
2018-09-01 |
description |
An emerging pollutant, diatrizoate (DTZ) has been frequently detected in aqueous solution. Unique reticular peanut shell biochar (BC)-supported nano zero-valent iron (nZVI) composite (nZVI/BC) was successfully synthesized and used as a catalyst for activating persulfate (PS) to promote the removal of DTZ. The structure and morphology of the nanocomposite materials were characterized by scanning electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller measurements, and Fourier transform infrared spectroscopy. The degradation of DTZ (20 mg L−1) was achieved by activating PS with the nanocomposite material. The removal of DTZ reached nearly 100% using 25 mM PS and 0.45 g L−1 nZVI/2BC (mass ratio of nZVI and BC at 1:2) nanocomposite material at pH 3.0 and 25 °C. Influencing factors, such as dosages of nZVI/2BC and PS, temperature, and pH were also investigated. The mechanisms of PS activation with nZVI/2BC were discussed, including BC property, electron transfer, and the identification of free radicals in the reaction. The findings demonstrated that nZVI/BC-PS (peanut shell BC-supported nZVI activating PS) is a promising material for the treatment of refractory organic pollutants. |
topic |
nano zero-valent iron peanut shell biochar persulfate activated diatrizoate degradation |
url |
http://www.mdpi.com/1660-4601/15/9/1937 |
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