| Disposal of domestic sludge and sludge ash on volcanic soils. | |
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MedLine Citation:
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PMID: 16650527 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Column leaching experiments were conducted to test the ability of Chilean volcanic soils in retaining the mineral constituents and metals in sewage sludge and sludge ash that were incorporated into the soils. Small or negligible amounts of the total content of Pb, Fe, Cr, Mn, Cd, and Zn (0 to <2%), and more significant amounts of mineral constituents such as Na (7-9%), Ca (7-13%), PO4 (4-10%), and SO4 (39-46%) in the sludge and sludge ash were readily soluble. When they were incorporated on the surface layer of the soils and leached with 12 pore volumes of water over a 3 month period of time, less than 0.1% of the total amount of heavy metals and PO4 in the sludge and sludge ash were collected in the drainage water. Cation exchange selectivity, specific anion adsorption and solubility are the processes that cause the reduction of leaching. The volcanic soils were capable of retaining the mineral constituents, P, and metals in applied sewage sludge and sludge ash and gradually released them as nutrients for plant growth. |
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Authors:
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Mauricio Escudey; Juan E Förster; Juan P Becerra; Magdalena Quinteros; Justo Torres; Nicolas Arancibia; Gerardo Galindo; Andrew C Chang |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2006-05-02 |
Journal Detail:
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Title: Journal of hazardous materials Volume: 139 ISSN: 0304-3894 ISO Abbreviation: J. Hazard. Mater. Publication Date: 2007 Jan |
Date Detail:
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Created Date: 2007-01-16 Completed Date: 2007-04-17 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9422688 Medline TA: J Hazard Mater Country: Netherlands |
Other Details:
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Languages: eng Pagination: 550-5 Citation Subset: IM |
Affiliation:
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Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363 Santiago, Chile. mescudey@lauca.usach.cl |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Chile Refuse Disposal / methods* Sewage / chemistry* Soil / analysis* Volcanic Eruptions / analysis |
| Chemical | |
Reg. No./Substance:
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0/Sewage; 0/Soil |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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