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Patent Number: 5629199
Title:  Sonically enhanced method for removing chemical preservatives from chemically treated wood products
Inventors: George Korfiatis, Nirupam Pal
Abstract: A method for removing chemical preservatives from wood treated with chemical preservatives is provided. Wood treated with chemical preservatives is chipped to produce wood chips. These wood chips are contacted with an organic solvent and sonicated to extract the chemical preservatives. A system for the removal of chemical preservatives from wood treated with these preservatives which contains an extraction system for contacting wood chips from wood treated with a chemical preservative with an organic solvent and a sonicator for sonicating these wood chips in the organic solvent are also provided.
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