Degradation of dye in wastewater by Homogeneous Fe(VI)/NaHSO3 system

Mengying Sun; Wenyan Huang; Hao Cheng; Jianfeng Ma; Yong Kong; Sridhar Komarneni

doi:10.1016/j.chemosphere.2019.04.182

Degradation of dye in wastewater by Homogeneous Fe(VI)/NaHSO₃ system

Mengying Sun
, Wenyan Huang
, Hao Cheng
, Jianfeng Ma
, Yong Kong
, Sridhar Komarneni

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

The homogeneous Fe(VI)/Na₂SO₃ system has been proposed for highly efficient degradation of recalcitrant contaminants, in which sulfite could significantly enhance the transformation of organic substrate by Fe(VI). Also, the Fe(VI)/NaHSO₃ system could show high efficiency across a wide range of pH conditions. The degradation rates reached up to 80% within 2 min and 70% within 5 min in strongly acidic and alkaline conditions, respectively. Unexpectedly, a faster removal rate was obtained in Fe(VI)/NaHSO₃ system than that in Fe(VI)/Na₂SO₃ system for the degradation of methylene blue (MB). A reasonable dye degradation mechanism was proposed and verified by a series of experiments. The high oxidation potential of Fe(VI)and other species such as sulfate and hydroxyl radicals were responsible for the outstanding capabilities of Fe(VI)/NaHSO₃ system, which could significantly improve the treatment of organics in wastewater under a very wide range of pH conditions.

Original language	English (US)
Pages (from-to)	595-601
Number of pages	7
Journal	Chemosphere
Volume	228
DOIs	https://doi.org/10.1016/j.chemosphere.2019.04.182
State	Published - Aug 2019

All Science Journal Classification (ASJC) codes

General Chemistry
Public Health, Environmental and Occupational Health
Pollution
Health, Toxicology and Mutagenesis
Environmental Engineering
Environmental Chemistry

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10.1016/j.chemosphere.2019.04.182

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title = "Degradation of dye in wastewater by Homogeneous Fe(VI)/NaHSO3 system",

abstract = "The homogeneous Fe(VI)/Na2SO3 system has been proposed for highly efficient degradation of recalcitrant contaminants, in which sulfite could significantly enhance the transformation of organic substrate by Fe(VI). Also, the Fe(VI)/NaHSO3 system could show high efficiency across a wide range of pH conditions. The degradation rates reached up to 80\% within 2 min and 70\% within 5 min in strongly acidic and alkaline conditions, respectively. Unexpectedly, a faster removal rate was obtained in Fe(VI)/NaHSO3 system than that in Fe(VI)/Na2SO3 system for the degradation of methylene blue (MB). A reasonable dye degradation mechanism was proposed and verified by a series of experiments. The high oxidation potential of Fe(VI)and other species such as sulfate and hydroxyl radicals were responsible for the outstanding capabilities of Fe(VI)/NaHSO3 system, which could significantly improve the treatment of organics in wastewater under a very wide range of pH conditions.",

author = "Mengying Sun and Wenyan Huang and Hao Cheng and Jianfeng Ma and Yong Kong and Sridhar Komarneni",

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doi = "10.1016/j.chemosphere.2019.04.182",

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T1 - Degradation of dye in wastewater by Homogeneous Fe(VI)/NaHSO3 system

AU - Sun, Mengying

AU - Huang, Wenyan

AU - Cheng, Hao

AU - Ma, Jianfeng

AU - Kong, Yong

AU - Komarneni, Sridhar

PY - 2019/8

Y1 - 2019/8

N2 - The homogeneous Fe(VI)/Na2SO3 system has been proposed for highly efficient degradation of recalcitrant contaminants, in which sulfite could significantly enhance the transformation of organic substrate by Fe(VI). Also, the Fe(VI)/NaHSO3 system could show high efficiency across a wide range of pH conditions. The degradation rates reached up to 80% within 2 min and 70% within 5 min in strongly acidic and alkaline conditions, respectively. Unexpectedly, a faster removal rate was obtained in Fe(VI)/NaHSO3 system than that in Fe(VI)/Na2SO3 system for the degradation of methylene blue (MB). A reasonable dye degradation mechanism was proposed and verified by a series of experiments. The high oxidation potential of Fe(VI)and other species such as sulfate and hydroxyl radicals were responsible for the outstanding capabilities of Fe(VI)/NaHSO3 system, which could significantly improve the treatment of organics in wastewater under a very wide range of pH conditions.

AB - The homogeneous Fe(VI)/Na2SO3 system has been proposed for highly efficient degradation of recalcitrant contaminants, in which sulfite could significantly enhance the transformation of organic substrate by Fe(VI). Also, the Fe(VI)/NaHSO3 system could show high efficiency across a wide range of pH conditions. The degradation rates reached up to 80% within 2 min and 70% within 5 min in strongly acidic and alkaline conditions, respectively. Unexpectedly, a faster removal rate was obtained in Fe(VI)/NaHSO3 system than that in Fe(VI)/Na2SO3 system for the degradation of methylene blue (MB). A reasonable dye degradation mechanism was proposed and verified by a series of experiments. The high oxidation potential of Fe(VI)and other species such as sulfate and hydroxyl radicals were responsible for the outstanding capabilities of Fe(VI)/NaHSO3 system, which could significantly improve the treatment of organics in wastewater under a very wide range of pH conditions.

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Degradation of dye in wastewater by Homogeneous Fe(VI)/NaHSO₃ system

Abstract

All Science Journal Classification (ASJC) codes

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