| Chemical speciation and phytoavailability of Zn, Cu, Ni and Cd in soil amended with fly ash-stabilized sewage sludge. | |
| | |
MedLine Citation:
|
PMID: 14592566 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
A sequential extraction method was used to determine chemical forms of Cu, Zn, Ni and Cd in fly ash-stabilized sludge. A loamy acid soil amended with fly ash-stabilized sludge was used to grow corn under greenhouse conditions. Sewage sludge amended with coal fly ash can reduce the availability of Cu, Zn, Ni and Cd in the sludge. Increasing fly ash amendment rate significantly reduced DTPA-extractable Cu, Zn, Ni and Cd concentrations. Percentages of Cu, Zn and Ni in residual fraction increased with an increase in fly ash amendment rates. Majority of Cu was associated with organic form, but Zn and Ni were associated with Fe-Mn oxide and residual forms. Addition of ash-amended sludge to soil significantly increased dry mass of corn. With coal fly ash amendment rate increasing, concentrations of Zn and Cu in shoot tissues of corn decreased significantly, but concentrations of Cd and Ni did not change significantly. Significant correlations were found between concentrations of Cu and Zn in corn shoot and oxide and total Cu fractions, and all chemical fractions of Zn in fly ash-stabilized sludge, respectively. Hence, ash amendment significantly reduced the availability of heavy metals by chemical modification of their chemical speciation into less available forms. |
| | |
Authors:
|
D C Su; J W C Wong |
Related Documents
:
|
19157706 - Retention of copper originating from different fungicides in contrasting soil types. 18825446 - Toxicological responses of red-backed salamanders (plethodon cinereus) to soil exposure... 11993866 - Transport of humic and fulvic acids in relation to metal mobility in a copper-contamina... 14967676 - Effects of elevated nitrate and aluminum on the growth and nutrition of red spruce (pic... 19759096 - Functional diversity in gravitropic reaction among tropical seedlings in relation to ec... 12708676 - Weathering of lead bullets and their environmental effects at outdoor shooting ranges. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Environment international Volume: 29 ISSN: 0160-4120 ISO Abbreviation: Environ Int Publication Date: 2004 Jan |
Date Detail:
|
Created Date: 2003-10-31 Completed Date: 2004-04-22 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7807270 Medline TA: Environ Int Country: United States |
Other Details:
|
Languages: eng Pagination: 895-900 Citation Subset: IM |
Affiliation:
|
Department of Plant Nutrition, China Agricultural University, 100094 Beijing, PR China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Biodegradation, Environmental Biological Availability Carbon / chemistry* Coal Environmental Monitoring Industrial Waste Metals, Heavy / chemistry*, pharmacokinetics* Particulate Matter Refuse Disposal / methods Sewage / chemistry* Zea mays / chemistry, growth & development |
| Chemical | |
Reg. No./Substance:
|
0/Coal; 0/Industrial Waste; 0/Metals, Heavy; 0/Particulate Matter; 0/Sewage; 68131-74-8/fly ash; 7440-44-0/Carbon |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Preliminary exploration of the relationships between soil characteristics and PAH desorption and bio...
Next Document: Relationships between spatial and temporal variabilities in airborne metal distributions in Won Ju C...