Linked Life Data

21046433

Source:http://linkedlifedata.com/resource/pubmed/id/21046433

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2010-12-17
pubmed:abstractText
Laboratory and field filtration experiments were conducted to study the effectiveness of As(V) removal for five types of adsorbent media. The media included activated alumina (AA), modified activated alumina (MAA), granular ferric hydroxide (GFH), granular ferric oxide (GFO), and granular titanium dioxide (TiO?). In laboratory batch and column experiments, the synthetic challenge water was used to evaluate the effectiveness for five adsorbents. The results of the batch experiments showed that the As(V) adsorption decreased as follows at pH 6.5: TiO? > GFO > GFH > MAA > AA. At pH 8.5, however, As(V) removal decreased in the following order: GFO = TiO? > GFH > MAA > AA. In column experiments, at pH 6.5, the adsorbed As(V) for adsorbents followed the order: TiO? > GFO > GFH, whereas at pH 8.5 the order became: GFO = TiO? > GFH when the challenge water containing 50 ?g/L of As(V) was used. Field filtration experiments were carried out in parallel at a wellhead in New Jersey. Before the effluent arsenic concentration increased to 10 ?g/L, approximately 58,000 and 41,500 bed volumes of groundwater containing an average of 47 ?g/L of As(V) were treated by the filter system packed with GFO and TiO?, respectively. The As(V) adsorption decreased in the following sequence: GFO > TiO? > GFH > MAA > AA. Filtration results demonstrated that GFO and TiO? adsorbents could be used as media in small community filtration systems for As(V) removal.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1573-2983
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
33 Suppl 1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
133-41
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Removal of arsenate from water by adsorbents: a comparative case study.
pubmed:affiliation
International Environmental Research Center, Gwangju Institute of Science and Technology, South Korea. sbang@gist.ac.kr
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't