Liquefaction of CCA-treated wood and elimination of metals from the solvent by precipitation
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Lianzhen Lin
Abstract
Spent chromated copper arsenate (CCA)-treated wood was liquefied in polyethylene glycol 400/glycerin (2:1w/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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Artikel in diesem Heft
- Molecular dynamics study of lignin constituents in water
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- Characterization of active oxygen species under oxygen-alkali bleaching conditions
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- Stereoisomers of 3,3′-dimethoxy-4,4′-stilbenequinone
- Liquefaction of CCA-treated wood and elimination of metals from the solvent by precipitation
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- Chemical composition and antifungal activity of essential oil isolated from Chamaecyparis formosensis Matsum. wood
- Direct measurement of strain distribution along a wood bond line. Part 1: Shear strain concentration in a lap joint specimen by means of electronic speckle pattern interferometry
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