Remediation of heavy metal contaminated solid wastes using agglomeration techniques

  1. (PDF, 759 KB)
  2. Get@NRC: Remediation of heavy metal contaminated solid wastes using agglomeration techniques (Opens in a new window)
DOIResolve DOI:
AuthorSearch for: ; Search for:
Journal titleMinerals Engineering
Pages15131525; # of pages: 13
SubjectAgglomeration; Fine partilce processing; Tailings disposal; Waste processing
AbstractA process has been developed for the remediation of heavy metal contaminated, fine textured; solid wastes so that the treated material will meet EPA's TCLP and Total Extractable Metal Limits. The process involves the formation of strong aggregates using dry agglomeration methods. Remediation is achieved either by incorporating metal fixation agents into the agglomerates, or by leaching of heavy metal and other soluble salts by percolation through a packed bed of agglomerated soil. The handling problems encountered during solid liquid separations in conventional soil washing are overcome by agglomerating the fine textured solids. The newly developed process was applied to the remediation of a fine textured soil sample from a Dupont site contaminated with lead and a sediment from the Coeur d'Alene river, contaminated with Pb, Cd, and Zn. Because of low hydraulic flow-rates leaching of metals from unagglomerated solids was slow. The removal of metals from agglomerated feed occurred on the time scale of hours compared to days for the original materials. Batch column extraction studies showed that HCl, EDTA and citric acid were effective extractants for the removal of lead from the agglomerated material. The results of this study demonstrate that NRC's remediation process is suitable for the remediation of contaminated soil or soil like materials and has potential for commercialization.
Publication date
AffiliationNRC Institute for Chemical Process and Environmental Technology (ICPET-ITPCE); National Research Council Canada
Peer reviewedNo
NRC number44367
NPARC number8925942
Export citationExport as RIS
Report a correctionReport a correction
Record identifier9839210b-99ad-454f-8be4-1fc360f33aab
Record created2009-04-23
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)
Date modified: