Linked Life Data

16650930

Source:http://linkedlifedata.com/resource/pubmed/id/16650930

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2006-9-18
pubmed:abstractText
The combined or sequential use of ozone and activated carbon to treat toxic effluents has increased in recent years. However, little is known about the influence of carbon surface active sites on ozonation of organic adsorbed pollutants. This paper presents experimental results on the effect of metal oxides and oxygenated surface groups on gaseous ozonation of spent activated carbons. Benzothiazole (BT) was selected as a target organic compound in this study due to its environmental concern. Activated carbons with different chemical surface composition were prepared from a Filtrasorb-400 activated carbon. Pre-treatment included: ozonation, demineralisation, and deoxygenation of activated carbon. Ozonation experiments of BT saturated-activated carbons were conducted in a fixed bed reactor loaded with 2 g of carbon samples. The reactor was fed with an O2/O3 gas mixture (2 dm3/min, 5 g O3/h), for a given exposure time, in the range 10-120 min, at 298 K and 1 atm. Results show that extended gaseous ozonation of activated carbon saturated with BT led to the effective destruction of the adsorbate by oxidation reactions. Oxidation of BT adsorbed on activated carbon seemed to occur via both direct reaction with ozone molecules, and by oxygen radical species generated by catalytic ozone decomposition on metallic surface sites.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0304-3894
pubmed:author
pubmed:issnType
Print
pubmed:day
21
pubmed:volume
137
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1042-8
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Ozonation of benzothiazole saturated-activated carbons: influence of carbon chemical surface properties.
pubmed:affiliation
Facultad de Ingeniería, Universidad Católica de la Santísima Concepción, Caupolicán 491, Concepción, Chile. hvaldes@ucsc.cl
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't