Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Bin Yu; Chung Y. Hse; Todd F. Shupe
    Date: 2010
    Source: In: The 41st Annual Meeting of the International Research Group on Wood Protection. Biarritz, France: International Research Group on Wood Protection. 1-10.
    Publication Series: Miscellaneous Publication
    Station: Southern Research Station
    PDF: View PDF  (117.62 KB)

    Description

    The extraction effects of acid concentration, reaction time and temperature in a microwave reactor on recovery of CCA-treated wood were evaluated. Extraction of copper, chromium, and arsenic metals from chromated copper arsenate (CCA)-treated southern pine wood samples with two different organic acids (i.e., acetic acid and oxalic acid) was investigated using a microwave reactor. Oxalic acid was effective in removing 100% of the chromium and arsenic at 160ºC and 30 min. reaction time. Acetic acid could remove 98% of the copper and arsenic at the same condition. Oxalic acid significantly improved the extraction efficiency of arsenic and chromium when time was prolonged from 10min. to 30min. The HSAB (Pearson acid base concept) concept was applied to explain why oxalic acid removed more chromium and less copper compared with acetic acid. Acetic acid also showed an improved ability to remove arsenic and copper when the reaction temperature was increased from 90ºC to 160ºC.

    Publication Notes

    • You may send email to pubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Yu, Bin; Hse, Chung Y.; Shupe, Todd F. 2010. Microwave-assisted organic acids extraction of chromate copper arsenate (CCA)-treated southern pine. In: The 41st Annual Meeting of the International Research Group on Wood Protection. Biarritz, France: International Research Group on Wood Protection. 1-10.

    Keywords

    CCA, recovery, microwave, extraction, HSAB

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page