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Liquefaction of CCA-treated wood and elimination of metals from the solvent by precipitationAuthor(s): Lianzhen Lin; Chung-Yun Hse
Source: Holzforschung, Vol. 59, pp. 285-288
Publication Series: Miscellaneous Publication
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DescriptionSpent chromated copper arsenate (CCA)-treated wood was liquefied in polyethylene glycol 400/glycerin (2:1 w/w). Sulfuric acid (95-98%) and ferrous salts (FeSO4•7H2O or FeCl2•4H2O) were used as catalysts and additives, respectively. The resulting liquefied CCA-treated wood was diluted with aqueous solvents and was then mixed with complexion/precipitation agents, followed by precipitation or filtration to remove the toxic metal-bearing sediment. As a result, more than 90% of Cu, Cr or As was removed.
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CitationLin, Lianzhen; Hse, Chung-Yun. 2005. Liquefaction of CCA-treated wood and elimination of metals from the solvent by precipitation. Holzforschung, Vol. 59, pp. 285-288
KeywordsChromated copper arsenate, detoxification, inductively coupled plasma, recycling, treated wood, wood liquefaction
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