Oxidation of Chlorophenols by MnO<sub>2</sub> Supported on Kaolinite

Xiong Yang; Shao Xiaoling

doi:doi:10.11648/j.ijepp.20170503.11

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Oxidation of Chlorophenols by MnO₂ Supported on Kaolinite

Xiong Yang, Shao Xiaoling

Published in International Journal of Environmental Protection and Policy (Volume 5, Issue 3)

Received: 4 May 2017 Published: 5 May 2017

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Abstract

Chlorophenols (CPs) are of significant concern because of their wide use, toxicity and persistence in environments. In the present study, -MnO₂ supported on kaolinite was used as an oxidant to oxidize three kinds of CPs, 4-chlorophenol (CP), 2, 4-dichlorophenol(DCP) and 2, 4, 6-trichlorophenol(TCP). XRD pattern showed that the synthetic MnO₂ has a poor crystallinity, and SEM results revealed that MnO₂ was evenly coated on kaolinite with a loading amount of 8.64mg/g. All three CPs were efficiently degraded by supported MnO₂ with a removal order of 2, 4, 6-TCP>2, 4-DCP>4-CP. The degradation of CPs obviously accompanied with the release of Mn²⁺. Results also showed the increased oxidant’s dosage promotes the removal of CPs. The reaction of CPs with MnO₂ is strictly pH-dependent, the removal of CPs decreased with pH increasing.

Published in	International Journal of Environmental Protection and Policy (Volume 5, Issue 3)
DOI	10.11648/j.ijepp.20170503.11
Page(s)	32-37
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Supported MnO₂, CPs, Removal, Reaction

References

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APA Style

Xiong Yang, Shao Xiaoling. (2017). Oxidation of Chlorophenols by MnO2 Supported on Kaolinite. International Journal of Environmental Protection and Policy, 5(3), 32-37. https://doi.org/10.11648/j.ijepp.20170503.11

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ACS Style

Xiong Yang; Shao Xiaoling. Oxidation of Chlorophenols by MnO2 Supported on Kaolinite. Int. J. Environ. Prot. Policy 2017, 5(3), 32-37. doi: 10.11648/j.ijepp.20170503.11

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AMA Style

Xiong Yang, Shao Xiaoling. Oxidation of Chlorophenols by MnO2 Supported on Kaolinite. Int J Environ Prot Policy. 2017;5(3):32-37. doi: 10.11648/j.ijepp.20170503.11

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@article{10.11648/j.ijepp.20170503.11,
  author = {Xiong Yang and Shao Xiaoling},
  title = {Oxidation of Chlorophenols by MnO2 Supported on Kaolinite},
  journal = {International Journal of Environmental Protection and Policy},
  volume = {5},
  number = {3},
  pages = {32-37},
  doi = {10.11648/j.ijepp.20170503.11},
  url = {https://doi.org/10.11648/j.ijepp.20170503.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepp.20170503.11},
  abstract = {Chlorophenols (CPs) are of significant concern because of their wide use, toxicity and persistence in environments. In the present study, -MnO2 supported on kaolinite was used as an oxidant to oxidize three kinds of CPs, 4-chlorophenol (CP), 2, 4-dichlorophenol(DCP) and 2, 4, 6-trichlorophenol(TCP). XRD pattern showed that the synthetic MnO2 has a poor crystallinity, and SEM results revealed that MnO2 was evenly coated on kaolinite with a loading amount of 8.64mg/g. All three CPs were efficiently degraded by supported MnO2 with a removal order of 2, 4, 6-TCP>2, 4-DCP>4-CP. The degradation of CPs obviously accompanied with the release of Mn2+. Results also showed the increased oxidant’s dosage promotes the removal of CPs. The reaction of CPs with MnO2 is strictly pH-dependent, the removal of CPs decreased with pH increasing.},
 year = {2017}
}

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TY  - JOUR
T1  - Oxidation of Chlorophenols by MnO2 Supported on Kaolinite
AU  - Xiong Yang
AU  - Shao Xiaoling
Y1  - 2017/05/05
PY  - 2017
N1  - https://doi.org/10.11648/j.ijepp.20170503.11
DO  - 10.11648/j.ijepp.20170503.11
T2  - International Journal of Environmental Protection and Policy
JF  - International Journal of Environmental Protection and Policy
JO  - International Journal of Environmental Protection and Policy
SP  - 32
EP  - 37
PB  - Science Publishing Group
SN  - 2330-7536
UR  - https://doi.org/10.11648/j.ijepp.20170503.11
AB  - Chlorophenols (CPs) are of significant concern because of their wide use, toxicity and persistence in environments. In the present study, -MnO2 supported on kaolinite was used as an oxidant to oxidize three kinds of CPs, 4-chlorophenol (CP), 2, 4-dichlorophenol(DCP) and 2, 4, 6-trichlorophenol(TCP). XRD pattern showed that the synthetic MnO2 has a poor crystallinity, and SEM results revealed that MnO2 was evenly coated on kaolinite with a loading amount of 8.64mg/g. All three CPs were efficiently degraded by supported MnO2 with a removal order of 2, 4, 6-TCP>2, 4-DCP>4-CP. The degradation of CPs obviously accompanied with the release of Mn2+. Results also showed the increased oxidant’s dosage promotes the removal of CPs. The reaction of CPs with MnO2 is strictly pH-dependent, the removal of CPs decreased with pH increasing.
VL  - 5
IS  - 3
ER  -

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Author Information

Xiong Yang

School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China
Shao Xiaoling

School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, China

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Plain Text BibTeX RIS

APA Style

Xiong Yang, Shao Xiaoling. (2017). Oxidation of Chlorophenols by MnO2 Supported on Kaolinite. International Journal of Environmental Protection and Policy, 5(3), 32-37. https://doi.org/10.11648/j.ijepp.20170503.11

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ACS Style

Xiong Yang; Shao Xiaoling. Oxidation of Chlorophenols by MnO2 Supported on Kaolinite. Int. J. Environ. Prot. Policy 2017, 5(3), 32-37. doi: 10.11648/j.ijepp.20170503.11

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AMA Style

Xiong Yang, Shao Xiaoling. Oxidation of Chlorophenols by MnO2 Supported on Kaolinite. Int J Environ Prot Policy. 2017;5(3):32-37. doi: 10.11648/j.ijepp.20170503.11

Copy | Download

@article{10.11648/j.ijepp.20170503.11,
  author = {Xiong Yang and Shao Xiaoling},
  title = {Oxidation of Chlorophenols by MnO2 Supported on Kaolinite},
  journal = {International Journal of Environmental Protection and Policy},
  volume = {5},
  number = {3},
  pages = {32-37},
  doi = {10.11648/j.ijepp.20170503.11},
  url = {https://doi.org/10.11648/j.ijepp.20170503.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepp.20170503.11},
  abstract = {Chlorophenols (CPs) are of significant concern because of their wide use, toxicity and persistence in environments. In the present study, -MnO2 supported on kaolinite was used as an oxidant to oxidize three kinds of CPs, 4-chlorophenol (CP), 2, 4-dichlorophenol(DCP) and 2, 4, 6-trichlorophenol(TCP). XRD pattern showed that the synthetic MnO2 has a poor crystallinity, and SEM results revealed that MnO2 was evenly coated on kaolinite with a loading amount of 8.64mg/g. All three CPs were efficiently degraded by supported MnO2 with a removal order of 2, 4, 6-TCP>2, 4-DCP>4-CP. The degradation of CPs obviously accompanied with the release of Mn2+. Results also showed the increased oxidant’s dosage promotes the removal of CPs. The reaction of CPs with MnO2 is strictly pH-dependent, the removal of CPs decreased with pH increasing.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Oxidation of Chlorophenols by MnO2 Supported on Kaolinite
AU  - Xiong Yang
AU  - Shao Xiaoling
Y1  - 2017/05/05
PY  - 2017
N1  - https://doi.org/10.11648/j.ijepp.20170503.11
DO  - 10.11648/j.ijepp.20170503.11
T2  - International Journal of Environmental Protection and Policy
JF  - International Journal of Environmental Protection and Policy
JO  - International Journal of Environmental Protection and Policy
SP  - 32
EP  - 37
PB  - Science Publishing Group
SN  - 2330-7536
UR  - https://doi.org/10.11648/j.ijepp.20170503.11
AB  - Chlorophenols (CPs) are of significant concern because of their wide use, toxicity and persistence in environments. In the present study, -MnO2 supported on kaolinite was used as an oxidant to oxidize three kinds of CPs, 4-chlorophenol (CP), 2, 4-dichlorophenol(DCP) and 2, 4, 6-trichlorophenol(TCP). XRD pattern showed that the synthetic MnO2 has a poor crystallinity, and SEM results revealed that MnO2 was evenly coated on kaolinite with a loading amount of 8.64mg/g. All three CPs were efficiently degraded by supported MnO2 with a removal order of 2, 4, 6-TCP>2, 4-DCP>4-CP. The degradation of CPs obviously accompanied with the release of Mn2+. Results also showed the increased oxidant’s dosage promotes the removal of CPs. The reaction of CPs with MnO2 is strictly pH-dependent, the removal of CPs decreased with pH increasing.
VL  - 5
IS  - 3
ER  -

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