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Title: Liquefaction of CCA-treated wood and elimination of metals from the solvent by precipitation

Author: Lin, Lianzhen; Hse, Chung-Yun;

Date: 2005

Source: Holzforschung, Vol. 59, pp. 285-288

Publication Series: Miscellaneous Publication

Description: Spent 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.

Keywords: Chromated copper arsenate, detoxification, inductively coupled plasma, recycling, treated wood, wood liquefaction

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Lin, 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

 


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