Benzothiazole heterogeneous photodegradation in nano α-Fe2O3/oxalate system under UV light irradiation
The photodegradation of benzothiazole (BTH) in wastewater with the coexistence of iron oxides and oxalic acid under UV light irradiation was investigated. Results revealed that an effective heterogeneous photo-Fenton-like system could be set up for BTH abatement in wastewater under UV irradiation wi...
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The Royal Society
2018-01-01
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doaj-610651fb733646aaa6340be1dd37745b2020-11-25T04:00:18ZengThe Royal SocietyRoyal Society Open Science2054-57032018-01-015610.1098/rsos.180322180322Benzothiazole heterogeneous photodegradation in nano α-Fe2O3/oxalate system under UV light irradiationXiangyun HanXi ZhangLei ZhangMei PanJinlong YanThe photodegradation of benzothiazole (BTH) in wastewater with the coexistence of iron oxides and oxalic acid under UV light irradiation was investigated. Results revealed that an effective heterogeneous photo-Fenton-like system could be set up for BTH abatement in wastewater under UV irradiation without additional H2O2, and 88.1% BTH was removed with the addition of 2.0 mmol l−1 oxalic acid and 0.2 g l−1 α-Fe2O3 using a 500 W high-pressure mercury lamp (365 nm). The degradation of BTH in the photo-Fenton-like system followed the first-order kinetic model. The photoproduction of hydroxyl radicals (·OH) in different systems was determined by high-performance liquid chromatography. Identification of transformation products by using liquid chromatography coupled with high resolution tandem mass spectrometry provided information about six transformation products formed during the photodegradation of BTH. Further insight was obtained by monitoring concentrations of the sulfate ion (SO42−) and nitrate ion (NO3−), which demonstrated that the intermediate products of BTH could be decomposed ultimately. Based on the results, the potential photodegradation pathway of BTH was also proposed.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.180322benzothiazolephotodegradationtransformation productsdegradation pathway |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiangyun Han Xi Zhang Lei Zhang Mei Pan Jinlong Yan |
spellingShingle |
Xiangyun Han Xi Zhang Lei Zhang Mei Pan Jinlong Yan Benzothiazole heterogeneous photodegradation in nano α-Fe2O3/oxalate system under UV light irradiation Royal Society Open Science benzothiazole photodegradation transformation products degradation pathway |
author_facet |
Xiangyun Han Xi Zhang Lei Zhang Mei Pan Jinlong Yan |
author_sort |
Xiangyun Han |
title |
Benzothiazole heterogeneous photodegradation in nano α-Fe2O3/oxalate system under UV light irradiation |
title_short |
Benzothiazole heterogeneous photodegradation in nano α-Fe2O3/oxalate system under UV light irradiation |
title_full |
Benzothiazole heterogeneous photodegradation in nano α-Fe2O3/oxalate system under UV light irradiation |
title_fullStr |
Benzothiazole heterogeneous photodegradation in nano α-Fe2O3/oxalate system under UV light irradiation |
title_full_unstemmed |
Benzothiazole heterogeneous photodegradation in nano α-Fe2O3/oxalate system under UV light irradiation |
title_sort |
benzothiazole heterogeneous photodegradation in nano α-fe2o3/oxalate system under uv light irradiation |
publisher |
The Royal Society |
series |
Royal Society Open Science |
issn |
2054-5703 |
publishDate |
2018-01-01 |
description |
The photodegradation of benzothiazole (BTH) in wastewater with the coexistence of iron oxides and oxalic acid under UV light irradiation was investigated. Results revealed that an effective heterogeneous photo-Fenton-like system could be set up for BTH abatement in wastewater under UV irradiation without additional H2O2, and 88.1% BTH was removed with the addition of 2.0 mmol l−1 oxalic acid and 0.2 g l−1 α-Fe2O3 using a 500 W high-pressure mercury lamp (365 nm). The degradation of BTH in the photo-Fenton-like system followed the first-order kinetic model. The photoproduction of hydroxyl radicals (·OH) in different systems was determined by high-performance liquid chromatography. Identification of transformation products by using liquid chromatography coupled with high resolution tandem mass spectrometry provided information about six transformation products formed during the photodegradation of BTH. Further insight was obtained by monitoring concentrations of the sulfate ion (SO42−) and nitrate ion (NO3−), which demonstrated that the intermediate products of BTH could be decomposed ultimately. Based on the results, the potential photodegradation pathway of BTH was also proposed. |
topic |
benzothiazole photodegradation transformation products degradation pathway |
url |
https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.180322 |
work_keys_str_mv |
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