Source:http://linkedlifedata.com/resource/pubmed/id/16466774
Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
|
pubmed:dateCreated |
2006-6-12
|
pubmed:abstractText |
The leaching behavior of chromium was studied using batch leaching tests, surface complexation modeling and X-ray absorption near edge structure (XANES) spectroscopy. A contaminated soil sample containing 1330 mg-Cr kg(-1) and 25600 mg-Fe kg(-1) of dry soil was stabilized/solidified (S/S) with 10% cement, 25% cement, 10% lime and a mixture of 20% flyash and 5% lime. The XANES analysis showed that Cr(III) was the only Cr species in untreated soil and S/S-treated samples. The leachate Cr concentration determined using the toxicity characteristic leaching procedure (TCLP) was reduced from 5.18 mg l(-1) for untreated soil to 0.84 mg l(-1) for the sample treated with 25% cement. The Cr leachability in untreated and treated soil samples decreased dramatically as the pH increased from 3 to 5, remained at similar levels in the pH range between 5 and 10.5, and further decreased at pH>10.5. Modeling results indicated that the release of Cr(III) was controlled by adsorption on iron oxides at pH<10.5, and by precipitation of Ca(2)Cr(2)O(5).6H(2)O at pH>10.5.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Calcium Compounds,
http://linkedlifedata.com/resource/pubmed/chemical/Carbon,
http://linkedlifedata.com/resource/pubmed/chemical/Chromium Compounds,
http://linkedlifedata.com/resource/pubmed/chemical/Coal Ash,
http://linkedlifedata.com/resource/pubmed/chemical/Oxides,
http://linkedlifedata.com/resource/pubmed/chemical/Particulate Matter,
http://linkedlifedata.com/resource/pubmed/chemical/Soil Pollutants,
http://linkedlifedata.com/resource/pubmed/chemical/lime
|
pubmed:status |
MEDLINE
|
pubmed:month |
Jun
|
pubmed:issn |
0045-6535
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
64
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
379-85
|
pubmed:dateRevised |
2011-11-17
|
pubmed:meshHeading |
pubmed-meshheading:16466774-Adsorption,
pubmed-meshheading:16466774-Calcium Compounds,
pubmed-meshheading:16466774-Carbon,
pubmed-meshheading:16466774-Cementation,
pubmed-meshheading:16466774-Chemical Precipitation,
pubmed-meshheading:16466774-Chromium Compounds,
pubmed-meshheading:16466774-Coal Ash,
pubmed-meshheading:16466774-Models, Chemical,
pubmed-meshheading:16466774-New Jersey,
pubmed-meshheading:16466774-Oxides,
pubmed-meshheading:16466774-Particulate Matter,
pubmed-meshheading:16466774-Soil Pollutants,
pubmed-meshheading:16466774-Solubility,
pubmed-meshheading:16466774-Waste Management
|
pubmed:year |
2006
|
pubmed:articleTitle |
Leaching behavior of Cr(III) in stabilized/solidified soil.
|
pubmed:affiliation |
Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ 07030, USA.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|