Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/23653
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Potential use of gypsum and lime rich industrial by-products for induced reduction of Pb. Zn and Ni leachability in an acid soil

AuthorsRodríguez Jordá, M. P.; Garrido, Fernando CSIC ORCID ; García-González, M. T.
KeywordsIndustrial by-products
In situ remediation
Toxic elements
Metal leachability
Issue Date2010
PublisherElsevier
CitationJournal of Hazardous Materials 175: 762-769 (2010)
AbstractThis study evaluates the potential use of four industrial by-products (phosphogypsum (PG), red gypsum (RG), sugar foam (SF), and ashes from biomass combustion (ACB)), applied at two rates in single and combined amendments to reduce the mobility and availability of Pb, Zn and Ni in a metal-spiked acid soil. Leaching experiments were done to estimate leachability indexes and assess their effectiveness. Most of the treatments significantly reduced the metal leachability although only a few were effective for all metals. Based on principal component and cluster analysis, sugar foam (SF) and a mixture of RG and ACB (RG+ACB), both applied at high rate, were selected as first choices to reduce mobility and availability of the three metals. Metal sorption mechanisms involved in the reduction of their leachability were identified using scanning electron microscopy. In the SF-treated samples, the metals were found associated to amorphous Al-hydroxy polymers deposited on phyllosilicates and organic matter particles. In the (RG+ACB)-treated samples, Pb, Zn, and traces of Ni were found associated to Fe/Ti oxide phases with a significant concentration of S, suggesting the formation of metal-sulfate ternary complexes.
Description8 pages, figures, and tables statistics.
Publisher version (URL)http://dx.doi.org/10.1016/j.jhazmat.2009.10.074
URIhttp://hdl.handle.net/10261/23653
DOI10.1016/j.jhazmat.2009.10.074
ISSN0304-3894
Appears in Collections:(ICA) Artículos

Files in This Item:
File Description SizeFormat
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

SCOPUSTM   
Citations

27
checked on May 14, 2022

WEB OF SCIENCETM
Citations

24
checked on May 13, 2022

Page view(s)

331
checked on May 18, 2022

Download(s)

27
checked on May 18, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.