schliessen

Filtern

 

Bibliotheken

Catalytic supercritical water oxidation: Phenol conversion and product selectivity

Catalytic supercritical water oxidation (SCWO) has been demonstrated as an effective method of destroying organic compounds contained within an aqueous waste stream. Whereas SCWO is effective in the destruction of the original organic compound, incomplete conversion to low molecular weight partial o... Full description

Journal Title: Environmental Science & Technology 0, 1995, Vol.29(11), pp.2748-2753
Main Author: Ding, Zhong-Yi
Other Authors: Aki, Snv , Abraham, MA
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0013-936X
Link: http://search.proquest.com/docview/17004570/?pq-origsite=primo
Zum Text:
SendSend as email Add to Book BagAdd to Book Bag
Staff View
recordid: proquest17004570
title: Catalytic supercritical water oxidation: Phenol conversion and product selectivity
format: Article
creator:
  • Ding, Zhong-Yi
  • Aki, Snv
  • Abraham, MA
subjects:
  • Oxidation Process
  • Model Studies
  • Phenols
  • Organic Compounds
  • Chemical Treatment
  • Catalysts
  • Kinetics
  • Degradation Products
  • Selectivity
  • Wastewater Treatment Processes
ispartof: Environmental Science & Technology, 0, 1995, Vol.29(11), pp.2748-2753
description: Catalytic supercritical water oxidation (SCWO) has been demonstrated as an effective method of destroying organic compounds contained within an aqueous waste stream. Whereas SCWO is effective in the destruction of the original organic compound, incomplete conversion to low molecular weight partial oxidation products may be achieved. In all cases, enhanced phenol conversion and CO sub(2) yield were obtained relative to the homogeneous case. Under selected operating conditions (temperature approximately 450 degree , 500% excess oxygen), the addition of MnO sub(2)/CeO or V sub(2)O sub(5) catalysts can enhance the conversion to CO sub(2) such that essentially quantitative conversion is obtained. The MnO sub(2)/CeO catalyst is stable in the harsh reaction environment, at least to the limits of detection of the analytical instruments. A simple kinetic model, based on parallel reaction pathways, was used to evaluate the experimental data. Rate constants were obtained that adequately modeled the experimental results. The values of the rate constants were higher in the catalytic experiments compared with the homogeneous runs, further indicating that the addition of the heterogeneous catalyst promoted the oxidation pathways at the expense of the oligiomerization pathway.
language: eng
source:
identifier: ISSN: 0013-936X
fulltext: no_fulltext
issn:
  • 0013936X
  • 0013-936X
url: Link


@attributes
ID1748365420
RANK0.07
NO1
SEARCH_ENGINEprimo_central_multiple_fe
SEARCH_ENGINE_TYPEPrimo Central Search Engine
LOCALfalse
PrimoNMBib
record
control
sourcerecordid17004570
sourceidproquest
recordidTN_proquest17004570
sourcesystemOther
pqid17004570
galeid17795476
display
typearticle
titleCatalytic supercritical water oxidation: Phenol conversion and product selectivity
creatorDing, Zhong-Yi ; Aki, Snv ; Abraham, MA
contributorDing, Zhong-Yi (correspondence author)
ispartofEnvironmental Science & Technology, 0, 1995, Vol.29(11), pp.2748-2753
identifierISSN: 0013-936X
subjectOxidation Process ; Model Studies ; Phenols ; Organic Compounds ; Chemical Treatment ; Catalysts ; Kinetics ; Degradation Products ; Selectivity ; Wastewater Treatment Processes
descriptionCatalytic supercritical water oxidation (SCWO) has been demonstrated as an effective method of destroying organic compounds contained within an aqueous waste stream. Whereas SCWO is effective in the destruction of the original organic compound, incomplete conversion to low molecular weight partial oxidation products may be achieved. In all cases, enhanced phenol conversion and CO sub(2) yield were obtained relative to the homogeneous case. Under selected operating conditions (temperature approximately 450 degree , 500% excess oxygen), the addition of MnO sub(2)/CeO or V sub(2)O sub(5) catalysts can enhance the conversion to CO sub(2) such that essentially quantitative conversion is obtained. The MnO sub(2)/CeO catalyst is stable in the harsh reaction environment, at least to the limits of detection of the analytical instruments. A simple kinetic model, based on parallel reaction pathways, was used to evaluate the experimental data. Rate constants were obtained that adequately modeled the experimental results. The values of the rate constants were higher in the catalytic experiments compared with the homogeneous runs, further indicating that the addition of the heterogeneous catalyst promoted the oxidation pathways at the expense of the oligiomerization pathway.
languageeng
source
version8
lds50peer_reviewed
links
openurl$$Topenurl_article
openurlfulltext$$Topenurlfull_article
backlink$$Uhttp://search.proquest.com/docview/17004570/?pq-origsite=primo$$EView_record_in_ProQuest_(subscribers_only)
search
creatorcontrib
0Ding, Zhong-Yi
1Aki, Snv
2Abraham, MA
titleCatalytic supercritical water oxidation: Phenol conversion and product selectivity
descriptionCatalytic supercritical water oxidation (SCWO) has been demonstrated as an effective method of destroying organic compounds contained within an aqueous waste stream. Whereas SCWO is effective in the destruction of the original organic compound, incomplete conversion to low molecular weight partial oxidation products may be achieved. In all cases, enhanced phenol conversion and CO sub(2) yield were obtained relative to the homogeneous case. Under selected operating conditions (temperature approximately 450 degree , 500% excess oxygen), the addition of MnO sub(2)/CeO or V sub(2)O sub(5) catalysts can enhance the conversion to CO sub(2) such that essentially quantitative conversion is obtained. The MnO sub(2)/CeO catalyst is stable in the harsh reaction environment, at least to the limits of detection of the analytical instruments. A simple kinetic model, based on parallel reaction pathways, was used to evaluate the experimental data. Rate constants were obtained that adequately modeled the experimental results. The values of the rate constants were higher in the catalytic experiments compared with the homogeneous runs, further indicating that the addition of the heterogeneous catalyst promoted the oxidation pathways at the expense of the oligiomerization pathway.
subject
0Oxidation Process
1Model Studies
2Phenols
3Organic Compounds
4Chemical Treatment
5Catalysts
6Kinetics
7Degradation Products
8Selectivity
9Wastewater Treatment Processes
10SW 3040
general
0English
1Water Resources Abstracts
2ProQuest Aquatic Science Collection
3ProQuest Environmental Science Collection
4ProQuest Natural Science Collection
5ProQuest SciTech Collection
6Agricultural & Environmental Science Database
7Earth, Atmospheric & Aquatic Science Database
8Natural Science Collection
9SciTech Premium Collection
sourceidproquest
recordidproquest17004570
issn
00013936X
10013-936X
rsrctypearticle
creationdate1995
addtitleEnvironmental Science & Technology
searchscope
01007492
11007944
210000006
310000036
410000043
510000050
610000120
710000200
810000209
910000234
1010000244
1110000253
1210000260
13proquest
scope
01007492
11007944
210000006
310000036
410000043
510000050
610000120
710000200
810000209
910000234
1010000244
1110000253
1210000260
13proquest
lsr43
01007492false
11007944false
210000006false
310000036false
410000043false
510000050false
610000120false
710000200false
810000209false
910000234false
1010000244false
1110000253false
1210000260false
contributorDing, Zhong-Yi
startdate19950101
enddate19950101
citationpf 2748 pt 2753 vol 29 issue 11
lsr30VSR-Enriched:[doi, galeid, eissn, pqid]
sort
titleCatalytic supercritical water oxidation: Phenol conversion and product selectivity
authorDing, Zhong-Yi ; Aki, Snv ; Abraham, MA
creationdate19950101
lso0119950101
facets
frbrgroupid3455479605855164680
frbrtype5
languageeng
creationdate1995
topic
0Oxidation Process
1Model Studies
2Phenols
3Organic Compounds
4Chemical Treatment
5Catalysts
6Kinetics
7Degradation Products
8Selectivity
9Wastewater Treatment Processes
collection
0Water Resources Abstracts
1ProQuest Aquatic Science Collection
2ProQuest Environmental Science Collection
3ProQuest Natural Science Collection
4ProQuest SciTech Collection
5Agricultural & Environmental Science Database
6Earth, Atmospheric & Aquatic Science Database
7Natural Science Collection
8SciTech Premium Collection
prefilterarticles
rsrctypearticles
creatorcontrib
0Ding, Zhong-Yi
1Aki, Snv
2Abraham, MA
jtitleEnvironmental Science & Technology
toplevelpeer_reviewed
delivery
delcategoryRemote Search Resource
fulltextno_fulltext
addata
aulast
0Ding
1Aki
2Abraham
aufirst
0Zhong-Yi
1SNV
2MA
au
0Ding, Zhong-Yi
1Aki, Snv
2Abraham, MA
addauDing, Zhong-Yi
atitleCatalytic supercritical water oxidation: Phenol conversion and product selectivity
jtitleEnvironmental Science & Technology
risdate19950101
volume29
issue11
spage2748
epage2753
pages2748-2753
issn0013-936X
formatjournal
genrearticle
ristypeJOUR
abstractCatalytic supercritical water oxidation (SCWO) has been demonstrated as an effective method of destroying organic compounds contained within an aqueous waste stream. Whereas SCWO is effective in the destruction of the original organic compound, incomplete conversion to low molecular weight partial oxidation products may be achieved. In all cases, enhanced phenol conversion and CO sub(2) yield were obtained relative to the homogeneous case. Under selected operating conditions (temperature approximately 450 degree , 500% excess oxygen), the addition of MnO sub(2)/CeO or V sub(2)O sub(5) catalysts can enhance the conversion to CO sub(2) such that essentially quantitative conversion is obtained. The MnO sub(2)/CeO catalyst is stable in the harsh reaction environment, at least to the limits of detection of the analytical instruments. A simple kinetic model, based on parallel reaction pathways, was used to evaluate the experimental data. Rate constants were obtained that adequately modeled the experimental results. The values of the rate constants were higher in the catalytic experiments compared with the homogeneous runs, further indicating that the addition of the heterogeneous catalyst promoted the oxidation pathways at the expense of the oligiomerization pathway.
urlhttp://search.proquest.com/docview/17004570/
doi10.1021/es00011a008
eissn15205851
date1995-01-01