Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Evaluating solubility of Zn, Pb, Cu and Cd in pyrite cinder using leaching tests and geochemical modelling
Swedish Geotechnical Institute.
Swedish Geotechnical Institute.
Swedish Geotechnical Institute.
2017 (English)In: Applied Geochemistry, ISSN 0883-2927, E-ISSN 1872-9134, Vol. 85, p. 106-117Article in journal (Refereed) Published
Abstract [en]

Production of sulfuric acid by roasting of pyrite (Fe sulfide) produces a Fe rich waste product, pyrite cinder (or pyrite ash), which often contains high levels of trace metals such as Zn and Pb. The chemical forms of the metals and their solubility in these materials are poorly known. To evaluate the risks associated with pyrite cinder and manage cinder contaminated sites efficiently more knowledge on the chemical processes in pyrite cinder is needed. In this study the solubility of Zn, Pb, Cu and Cd in a pyrite cinder from Bergvik, Sweden, was investigated. The objectives were to (i) identify the solubility controlling processes for Zn, Pb, Cu, and Cd in the pH range 3-9, (ii) characterize the Fe (hydr)oxides present in these materials and (iii) to identify implications for management strategies of pyrite cinder contaminated sites. This was done using a combination of batch experiments, selective extractions, X-ray absorption spectroscopy and geochemical modelling. Hematite was identified as the dominating Fe mineral in the cinder. A geochemical model using generic binding parameters could describe the solubility of Zn, Cu and Cd in the cinder well, while Pb concentrations were generally underestimated. The modelling indicated that adsorption to Fe (hydr)oxides was the most important solubility controlling mechanism for all metals, except for Zn at pH greater than 6, where Zn minerals seemed to control the concentrations of Zn. To minimize leaching of Zn, Pb, Cu and Cd from cinder materials, remediation strategies should be focused on keeping the pH greater than 6.

Place, publisher, year, edition, pages
2017. Vol. 85, p. 106-117
Keywords [en]
Pyrite cinder, Industrial waste, Geochemistry, Chemical properties, Leaching, Zinc, Lead, Copper, Cadmium, Metal, Model, Laboratory test, Bergvik, Sweden, Bibliography, English
National Category
Geotechnical Engineering Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:swedgeo:diva-772DOI: 10.1016/j.apgeochem.2017.09.007OAI: oai:DiVA.org:swedgeo-772DiVA, id: diva2:1339417
Available from: 2019-07-29 Created: 2019-07-29 Last updated: 2019-07-29

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text
By organisation
Swedish Geotechnical Institute
In the same journal
Applied Geochemistry
Geotechnical EngineeringEarth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf