Decomposition of ethylenediaminetetraacetic acid by supercritical water oxidation

Hyeon Cheol Lee; Jung Hyun In; Kyung Yub Hwang; Chang Ha Lee

doi:10.1021/ie049952u

Decomposition of ethylenediaminetetraacetic acid by supercritical water oxidation

Hyeon Cheol Lee, Jung Hyun In, Kyung Yub Hwang, Chang Ha Lee

Department of Chemical and Biomolecular Engineering

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

30 Citations (Scopus)

Abstract

Ethylenediaminetetraacetic acid (EDTA) was decomposed by supercritical water oxidation (SCWO) in a tubular plug-flow reactor. The effect of the oxidant amount on the decomposition rate and efficiency was more significant at lower temperature. Also, excess oxidant played a key role in decreasing the activation energy for EDTA decomposition as COD_Cr. The nitrogen from EDTA was found to transform into NO₃^--N by thermal decomposition, while a portion of the nitrogen of EDTA and NO₃^--N was transformed into NH₄⁺-N and finally converted to N ₂ gas in the SCWO process. The decomposition kinetics of EDTA as COD_Cr in the SCWO process was described by a global rate expression.

Original language	English
Pages (from-to)	3223-3227
Number of pages	5
Journal	Industrial and Engineering Chemistry Research
Volume	43
Issue number	13
DOIs	https://doi.org/10.1021/ie049952u
Publication status	Published - 2004 Jun 23

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1021/ie049952u

Cite this

@article{ecde3a5d5c9d42cf97f74b6f63ceda9d,

title = "Decomposition of ethylenediaminetetraacetic acid by supercritical water oxidation",

abstract = "Ethylenediaminetetraacetic acid (EDTA) was decomposed by supercritical water oxidation (SCWO) in a tubular plug-flow reactor. The effect of the oxidant amount on the decomposition rate and efficiency was more significant at lower temperature. Also, excess oxidant played a key role in decreasing the activation energy for EDTA decomposition as CODCr. The nitrogen from EDTA was found to transform into NO3--N by thermal decomposition, while a portion of the nitrogen of EDTA and NO3--N was transformed into NH4+-N and finally converted to N 2 gas in the SCWO process. The decomposition kinetics of EDTA as CODCr in the SCWO process was described by a global rate expression.",

author = "Lee, {Hyeon Cheol} and In, {Jung Hyun} and Hwang, {Kyung Yub} and Lee, {Chang Ha}",

year = "2004",

month = jun,

day = "23",

doi = "10.1021/ie049952u",

language = "English",

volume = "43",

pages = "3223--3227",

journal = "Industrial and Engineering Chemistry Research",

issn = "0888-5885",

number = "13",

}

TY - JOUR

T1 - Decomposition of ethylenediaminetetraacetic acid by supercritical water oxidation

AU - Lee, Hyeon Cheol

AU - In, Jung Hyun

AU - Hwang, Kyung Yub

AU - Lee, Chang Ha

PY - 2004/6/23

Y1 - 2004/6/23

N2 - Ethylenediaminetetraacetic acid (EDTA) was decomposed by supercritical water oxidation (SCWO) in a tubular plug-flow reactor. The effect of the oxidant amount on the decomposition rate and efficiency was more significant at lower temperature. Also, excess oxidant played a key role in decreasing the activation energy for EDTA decomposition as CODCr. The nitrogen from EDTA was found to transform into NO3--N by thermal decomposition, while a portion of the nitrogen of EDTA and NO3--N was transformed into NH4+-N and finally converted to N 2 gas in the SCWO process. The decomposition kinetics of EDTA as CODCr in the SCWO process was described by a global rate expression.

AB - Ethylenediaminetetraacetic acid (EDTA) was decomposed by supercritical water oxidation (SCWO) in a tubular plug-flow reactor. The effect of the oxidant amount on the decomposition rate and efficiency was more significant at lower temperature. Also, excess oxidant played a key role in decreasing the activation energy for EDTA decomposition as CODCr. The nitrogen from EDTA was found to transform into NO3--N by thermal decomposition, while a portion of the nitrogen of EDTA and NO3--N was transformed into NH4+-N and finally converted to N 2 gas in the SCWO process. The decomposition kinetics of EDTA as CODCr in the SCWO process was described by a global rate expression.

UR - http://www.scopus.com/inward/record.url?scp=2942676613&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2942676613&partnerID=8YFLogxK

U2 - 10.1021/ie049952u

DO - 10.1021/ie049952u

M3 - Article

AN - SCOPUS:2942676613

SN - 0888-5885

VL - 43

SP - 3223

EP - 3227

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 13

ER -

Decomposition of ethylenediaminetetraacetic acid by supercritical water oxidation

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this