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Simultaneous removal of 2,4,6-tribromophenol from water and bromate ion minimization by ozonation.

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Title: Simultaneous removal of 2,4,6-tribromophenol from water and bromate ion minimization by ozonation.
Authors: Gounden, Asogan N.1, Singh, Sooboo2, Jonnalagadda, Sreekantha B.2
Source: Journal of Hazardous Materials. Sep2018, Vol. 357, p415-423. 9p.
Subjects: Bromophenols, Bromates, Carbon, Ozone, Hydrogen peroxide
Abstract: The study investigates the degradation of 2,4,6-tribromophenol (2,4,6-TBP) and the influence of solution pH, alkalinity, H 2 O 2 and O 3 dosage. Debromination efficiency of 2,4,6-TBP was the highest in basic water (pH = 10.61). The extent of TOC removal compared favourably with the amount of substrate converted, suggesting favourable mineralization of oxygenated by-products (OBPs). Ozonation in basic water favoured the formation of toxic   B r O 3 - , while in acidic water (pH = 2.27) B r O 3 - yield was lowest. In acidic water the presence of C O 3 2 - showed negligible effect on conversion, TOC and   B r O 3 - yield compared to ozonation alone. In basic water both 2,4,6-TBP conversion and TOC removal decreased with an increase in C O 3 2 - , hence minimizing B r O 3 - formation. The O 3 / H 2 O 2 process showed an improvement in the debromination efficiency and TOC data revealed that total mineralization of OBP’s was achieved. However, only 10% H 2 O 2 was able to effectively decrease B r O 3 - formation. Increasing the ozone concentration from 20 to 100 ppm enhanced the conversion of 2,4,6-TBP and TOC removal. At low ozone concentrations poor mineralization of OBP’s occurred, while complete mineralization was achieved at higher ozone dose. The reaction pathways for ozone degradation of 2,4,6-TBP in acidic and basic waters is proposed. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 130642352
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  Data: Simultaneous removal of 2,4,6-tribromophenol from water and bromate ion minimization by ozonation.
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  Data: <searchLink fieldCode="AR" term="%22Gounden%2C+Asogan+N%2E%22">Gounden, Asogan N.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Singh%2C+Sooboo%22">Singh, Sooboo</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Jonnalagadda%2C+Sreekantha+B%2E%22">Jonnalagadda, Sreekantha B.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Hazardous+Materials%22">Journal of Hazardous Materials</searchLink>. Sep2018, Vol. 357, p415-423. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Bromophenols%22">Bromophenols</searchLink><br /><searchLink fieldCode="DE" term="%22Bromates%22">Bromates</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon%22">Carbon</searchLink><br /><searchLink fieldCode="DE" term="%22Ozone%22">Ozone</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+peroxide%22">Hydrogen peroxide</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The study investigates the degradation of 2,4,6-tribromophenol (2,4,6-TBP) and the influence of solution pH, alkalinity, H 2 O 2 and O 3 dosage. Debromination efficiency of 2,4,6-TBP was the highest in basic water (pH = 10.61). The extent of TOC removal compared favourably with the amount of substrate converted, suggesting favourable mineralization of oxygenated by-products (OBPs). Ozonation in basic water favoured the formation of toxic   B r O 3 - , while in acidic water (pH = 2.27) B r O 3 - yield was lowest. In acidic water the presence of C O 3 2 - showed negligible effect on conversion, TOC and   B r O 3 - yield compared to ozonation alone. In basic water both 2,4,6-TBP conversion and TOC removal decreased with an increase in C O 3 2 - , hence minimizing B r O 3 - formation. The O 3 / H 2 O 2 process showed an improvement in the debromination efficiency and TOC data revealed that total mineralization of OBP’s was achieved. However, only 10% H 2 O 2 was able to effectively decrease B r O 3 - formation. Increasing the ozone concentration from 20 to 100 ppm enhanced the conversion of 2,4,6-TBP and TOC removal. At low ozone concentrations poor mineralization of OBP’s occurred, while complete mineralization was achieved at higher ozone dose. The reaction pathways for ozone degradation of 2,4,6-TBP in acidic and basic waters is proposed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jhazmat.2018.06.006
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 415
    Subjects:
      – SubjectFull: Bromophenols
        Type: general
      – SubjectFull: Bromates
        Type: general
      – SubjectFull: Carbon
        Type: general
      – SubjectFull: Ozone
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      – SubjectFull: Hydrogen peroxide
        Type: general
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      – TitleFull: Simultaneous removal of 2,4,6-tribromophenol from water and bromate ion minimization by ozonation.
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            NameFull: Gounden, Asogan N.
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            NameFull: Singh, Sooboo
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            NameFull: Jonnalagadda, Sreekantha B.
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            – D: 05
              M: 09
              Text: Sep2018
              Type: published
              Y: 2018
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              Value: 357
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