Metal loss from treated wood products in contact with municipal solid waste landfill leachate

Brajesh Dubey, Timothy Townsend, Helena M Solo-Gabriele

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The research presented in this paper evaluates the potential impact of municipal solid waste (MSW) landfill leachate quality on the loss of metals from discarded treated wood during disposal. The loss of arsenic (As), chromium (Cr), copper (Cu), and boron (B) from several types of pressure-treated wood (CCA: chromated copper arsenate, ACQ: alkaline copper quaternary, CBA: copper boron azole, and DOT: disodium octaborate tetrahydrate) using leachate collected from 26 MSW landfills in Florida was examined. The toxicity characteristic leaching procedure (TCLP), the synthetic precipitation leaching procedure (SPLP), and California's waste extraction test (WET) were also performed. The results suggested that loss of preservative components was influenced by leachate chemistry. Copper loss from CCA-, ACQ- and CBA-treated wood was similar in magnitude when in contact with landfill leachates compared to synthetic TCLP and SPLP solutions. Ammonia was found as one of the major parameters influencing the leaching of Cu from treated wood when leached with MSW landfill leachates. The results suggest that disposal of ACQ- and CBA-treated wood in substantial quantity in MSW landfills may elevate the Cu concentration in the leachate; this could be of potential concern, especially for a bioreactor MSW landfill in which relatively higher ammonia concentrations in leachate have been reported in recent literature. For the As, Cr and B the concentrations observed with the landfill leachate as the leaching solutions were over a range from some sample showing the concentrations below and some showing above the observed value from corresponding SPLP and TCLP tests. In general the WET test showed the highest concentrations.

Original languageEnglish
Pages (from-to)558-568
Number of pages11
JournalJournal of Hazardous Materials
Volume175
Issue number1-3
DOIs
StatePublished - Mar 15 2010

Fingerprint

Chemical Water Pollutants
Solid Waste
Wood products
Municipal solid waste
Land fill
municipal solid waste
Leaching
Metals
leaching
Waste Disposal Facilities
Copper
metal
Wood
leachate
copper
Boron
Arsenic
Chromium
Toxicity
Ammonia

Keywords

  • Ammonia
  • Arsenic
  • Chromium
  • Copper
  • Landfill leachate
  • Treated wood

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Metal loss from treated wood products in contact with municipal solid waste landfill leachate. / Dubey, Brajesh; Townsend, Timothy; Solo-Gabriele, Helena M.

In: Journal of Hazardous Materials, Vol. 175, No. 1-3, 15.03.2010, p. 558-568.

Research output: Contribution to journalArticle

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