Linked Life Data

20865443

Source:http://linkedlifedata.com/resource/pubmed/id/20865443

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2010-12-21
pubmed:abstractText
PURPOSE OF WORK: Hydrodehalogenation of persistent pollutants, such as the groundwater contaminants trichloroethylene and diatrizoate, are catalyzed by biogenic Pd nanoparticles. As H(2) gas supply for the dehalogenation reactions is still the limiting factor, this study examines in situ H(2) production in the cathode of a microbial electrolysis cell. In a biogenic Pd nanoparticle (bio-Pd) free microbial electrolysis cell (MEC), dechlorination of trichloroethylene (TCE) with concomitant chloride and ethane formation was achieved in the cathode compartment at a removal rate of 120 g TCE m(-3) total cathode compartment (TCC) day(-1), applying -0.8 V with a power source. When the cathode granules were coated with 5 mg bio-Pd g(-1) graphite, chloride and ethane formation increased to 151 g TCE m(-3) TCC day(-1) corresponding with a specific removal rate of 48 mg TCE g(-1) Pd day(-1). In both cases, formation of unwanted byproducts, such as vinyl chloride, was not significant. When the same setup was applied for transformation of the iodinated contrast medium diatrizoate (diaI(3)), reduction in a catalyst-free cathode of a MEC resulted in a removal of 48 ± 9% during the first h corresponding to 3 g diaI(3) m(-3) TCC day(-1). Coating the cathodic graphite granules with bio-Pd enhanced the transformation resulting in a 93 ± 4% removal during the first h corresponding to 6 g diaI(3) m(-3) TCC day(-1). These results suggest that MECs can produce H(2) in a sustainable way to provide an economical interesting reactant for bio-Pd catalyzed dehalogenation reactions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1573-6776
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
33
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
89-95
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Dehalogenation of environmental pollutants in microbial electrolysis cells with biogenic palladium nanoparticles.
pubmed:affiliation
Laboratory of Microbial Ecology and Technology (LabMET), Ghent University, Coupure Links 653, 9000, Ghent, Belgium.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't