Linked Life Data

21970161

Source:http://linkedlifedata.com/resource/pubmed/id/21970161

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11-12
pubmed:dateCreated
2011-10-5
pubmed:abstractText
This study sought to determine optimum conditions for the microwave exfoliation of raw vermiculite and examined the removal characteristics of copper ions from water by the processed vermiculite. When 100 g of raw vermiculite was irradiated at 440 W for 330 s, 66% of the raw vermiculite was exfoliated. The dry density and specific surface area of the exfoliated vermiculite were 0.28 g/cm3 and 54.6 m2/g, respectively. When considering the dry density (2.78 g/cm3) and specific surface area (11.1 m2/g) of the raw vermiculite, microwave irradiation resulted in an approximate 10 times expansion and a five-fold increase in specific surface area. Serial batch tests were conducted to determine the removal characteristics of the exfoliated vermiculite for copper ions in aqueous solutions. Copper was most effectively removed by exfoliated vermiculite with an initial pH of 5. Exfoliated vermiculite at this pH also produced the highest first-order rate constants and instantaneous partition coefficient. These results indicate that exfoliated vermiculite can be prepared by microwave irradiation instead of conventional heat processes for use as a copper ion adsorbent.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0959-3330
pubmed:author
pubmed:issnType
Print
pubmed:volume
32
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1195-203
pubmed:meshHeading
pubmed:articleTitle
Microwave preparation of raw vermiculite for use in removal of copper ions from aqueous solutions.
pubmed:affiliation
Department of Environmental Engineering, Pukyong National University, Busan, Republic of Korea. badger74w@pknu.ac.kr
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't