Tags

Type your tag names separated by a space and hit enter

Insights into the wavelength-dependent photolysis of chlorite: Elimination of carbamazepine and formation of chlorate.
Chemosphere. 2022 Feb; 288(Pt 1):132505.C

Abstract

Simultaneous removal of chlorite (ClO2-) and organic micro-pollutants (OMPs) by the irradiation of UV is a novel process. In this study we used UV light emitting diode (UV-LED) as a new UV source to systematically investigate the effect of UV wavelength (255, 285, 365 nm) on the simultaneous removal of carbamazepine (CBZ) and ClO2-. Removal of both CBZ and ClO2- followed the order of 255, 285, and 365 nm. Formation of hydroxyl radical and reactive chlorine species (RCS) were confirmed during the photolysis of ClO2- using probe compounds. RCS were always the predominant contributor to the degradation of CBZ in UV-LED/ClO2- system. The impacts of ClO2- dosage, pH, bicarbonate/carbonate (HCO3-/CO32-), and the effect of natural organic matter (NOM) on CBZ degradation were also evaluated. This study identified the products produced by CBZ through possible degradation pathways during the transformation process. Further, the amount of ClO2- may affect the amount of chlorate produced in UV/ClO2- system. Overall, our research provides an in-depth analysis of the effects of UV wavelength on the simultaneous removal of ClO2- and OMPs in water.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Wang J
Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha, 410082, China.
Zhu S
Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha, 410082, China. Electronic address: zshuminwater@163.com.
Wu Y
Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha, 410082, China.
Sheng D
Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha, 410082, China.
Bu L
Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha, 410082, China.
Zhou S
Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha, 410082, China.

MeSH

CarbamazepineChloratesChloridesChlorineDisinfectionOxidation-ReductionPhotolysisUltraviolet RaysWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

34627813

Citation

Wang, Jue, et al. "Insights Into the Wavelength-dependent Photolysis of Chlorite: Elimination of Carbamazepine and Formation of Chlorate." Chemosphere, vol. 288, no. Pt 1, 2022, p. 132505.
Wang J, Zhu S, Wu Y, et al. Insights into the wavelength-dependent photolysis of chlorite: Elimination of carbamazepine and formation of chlorate. Chemosphere. 2022;288(Pt 1):132505.
Wang, J., Zhu, S., Wu, Y., Sheng, D., Bu, L., & Zhou, S. (2022). Insights into the wavelength-dependent photolysis of chlorite: Elimination of carbamazepine and formation of chlorate. Chemosphere, 288(Pt 1), 132505. https://doi.org/10.1016/j.chemosphere.2021.132505
Wang J, et al. Insights Into the Wavelength-dependent Photolysis of Chlorite: Elimination of Carbamazepine and Formation of Chlorate. Chemosphere. 2022;288(Pt 1):132505. PubMed PMID: 34627813.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Insights into the wavelength-dependent photolysis of chlorite: Elimination of carbamazepine and formation of chlorate. AU - Wang,Jue, AU - Zhu,Shumin, AU - Wu,Yangtao, AU - Sheng,Da, AU - Bu,Lingjun, AU - Zhou,Shiqing, Y1 - 2021/10/07/ PY - 2021/08/09/received PY - 2021/09/22/revised PY - 2021/10/06/accepted PY - 2021/10/11/pubmed PY - 2021/12/15/medline PY - 2021/10/10/entrez KW - Chlorate KW - Inorganic disinfection by-products KW - Reactive chlorine species KW - UV-LED KW - Wavelengths SP - 132505 EP - 132505 JF - Chemosphere JO - Chemosphere VL - 288 IS - Pt 1 N2 - Simultaneous removal of chlorite (ClO2-) and organic micro-pollutants (OMPs) by the irradiation of UV is a novel process. In this study we used UV light emitting diode (UV-LED) as a new UV source to systematically investigate the effect of UV wavelength (255, 285, 365 nm) on the simultaneous removal of carbamazepine (CBZ) and ClO2-. Removal of both CBZ and ClO2- followed the order of 255, 285, and 365 nm. Formation of hydroxyl radical and reactive chlorine species (RCS) were confirmed during the photolysis of ClO2- using probe compounds. RCS were always the predominant contributor to the degradation of CBZ in UV-LED/ClO2- system. The impacts of ClO2- dosage, pH, bicarbonate/carbonate (HCO3-/CO32-), and the effect of natural organic matter (NOM) on CBZ degradation were also evaluated. This study identified the products produced by CBZ through possible degradation pathways during the transformation process. Further, the amount of ClO2- may affect the amount of chlorate produced in UV/ClO2- system. Overall, our research provides an in-depth analysis of the effects of UV wavelength on the simultaneous removal of ClO2- and OMPs in water. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/34627813/Insights_into_the_wavelength_dependent_photolysis_of_chlorite:_Elimination_of_carbamazepine_and_formation_of_chlorate_ DB - PRIME DP - Unbound Medicine ER -