Landfill disposal of CCA-treated wood with construction and demolition (C&D) debris: Arsenic, chromium, and copper concentrations in leachate

Jenna R. Jambeck, Timothy G. Townsend, Helena M. Solo-Gabriele

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Although phased out of many residential uses in the United States, the disposal of CCA-treated wood remains a concern because significant quantities have yet to be taken out of service, and it is commonly disposed in landfills. Catastrophic events have also led to the concentrated disposal of CCA-treated wood, often in unlined landfills. The goal of this research was to simulate the complex chemical and biological activity of a construction and demolition (C&D) debris landfill containing a realistic quantity of CCA-treated wood (10% by mass), produce leachate, and then evaluate the arsenic, copper, and chromium concentrations in the leachate as an indication of what may occur in a landfill setting. Copper concentrations were not significantly elevated in the control or experimental simulated landfill setting (α = 0.05). However, the concentrations of arsenic and chromium were significantly higher in the experimental simulated landfill leachate compared to the control simulated landfill leachate (α = 0.05, p < 0.001). This indicates that disposal of CCA-treated wood with C&D debris can impact leachate quality which, in turn could affect leachate management practices or aquifers below unlined landfills.

Original languageEnglish (US)
Pages (from-to)5740-5745
Number of pages6
JournalEnvironmental Science and Technology
Volume42
Issue number15
DOIs
StatePublished - Aug 1 2008
Externally publishedYes

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ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

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