NaFeEDTA decomposition and hematite nanoparticle formation in supercritical water oxidation

Hyeon Cheol Lee; Jong Hwa Kim; Jung Hyun In; Chang Ha Lee

doi:10.1021/ie050115h

NaFeEDTA decomposition and hematite nanoparticle formation in supercritical water oxidation

Hyeon Cheol Lee, Jong Hwa Kim, Jung Hyun In, Chang Ha Lee

Department of Chemical and Biomolecular Engineering

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

19 Citations (Scopus)

Abstract

Metal complex ethylenediaminetetraacetic acid (NaFeEDTA) was effectively decomposed by supercritical water oxidation (SCWO) with hydrogen peroxide in a plug-flow reactor. The effects of the oxidant amount and temperature on the decomposition rate and efficiency were more significant than that of pressure. The amount of oxidant significantly affected the decomposition rate and efficiency at lower temperatures. The decomposition kinetics of NaFeEDTA as the total organic carbon in the SCWO process was described using a global rate expression. In addition, as a byproduct, hematite (α-Fe₂O ₃) in the range of 50-450 nm with regular shape was obtained from the decomposition of NaFeEDTA by the SCWO process. The size and shape of the metal oxide was controlled by the SCWO condition.

Original language	English
Pages (from-to)	6615-6621
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	44
Issue number	17
DOIs	https://doi.org/10.1021/ie050115h
Publication status	Published - 2005 Aug 17

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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10.1021/ie050115h

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abstract = "Metal complex ethylenediaminetetraacetic acid (NaFeEDTA) was effectively decomposed by supercritical water oxidation (SCWO) with hydrogen peroxide in a plug-flow reactor. The effects of the oxidant amount and temperature on the decomposition rate and efficiency were more significant than that of pressure. The amount of oxidant significantly affected the decomposition rate and efficiency at lower temperatures. The decomposition kinetics of NaFeEDTA as the total organic carbon in the SCWO process was described using a global rate expression. In addition, as a byproduct, hematite (α-Fe2O 3) in the range of 50-450 nm with regular shape was obtained from the decomposition of NaFeEDTA by the SCWO process. The size and shape of the metal oxide was controlled by the SCWO condition.",

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AU - Lee, Hyeon Cheol

AU - Kim, Jong Hwa

AU - In, Jung Hyun

AU - Lee, Chang Ha

PY - 2005/8/17

Y1 - 2005/8/17

N2 - Metal complex ethylenediaminetetraacetic acid (NaFeEDTA) was effectively decomposed by supercritical water oxidation (SCWO) with hydrogen peroxide in a plug-flow reactor. The effects of the oxidant amount and temperature on the decomposition rate and efficiency were more significant than that of pressure. The amount of oxidant significantly affected the decomposition rate and efficiency at lower temperatures. The decomposition kinetics of NaFeEDTA as the total organic carbon in the SCWO process was described using a global rate expression. In addition, as a byproduct, hematite (α-Fe2O 3) in the range of 50-450 nm with regular shape was obtained from the decomposition of NaFeEDTA by the SCWO process. The size and shape of the metal oxide was controlled by the SCWO condition.

AB - Metal complex ethylenediaminetetraacetic acid (NaFeEDTA) was effectively decomposed by supercritical water oxidation (SCWO) with hydrogen peroxide in a plug-flow reactor. The effects of the oxidant amount and temperature on the decomposition rate and efficiency were more significant than that of pressure. The amount of oxidant significantly affected the decomposition rate and efficiency at lower temperatures. The decomposition kinetics of NaFeEDTA as the total organic carbon in the SCWO process was described using a global rate expression. In addition, as a byproduct, hematite (α-Fe2O 3) in the range of 50-450 nm with regular shape was obtained from the decomposition of NaFeEDTA by the SCWO process. The size and shape of the metal oxide was controlled by the SCWO condition.

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NaFeEDTA decomposition and hematite nanoparticle formation in supercritical water oxidation

Abstract

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