Hydrothermal Treatment of Creosote-Impregnated Wood
Keywords:
Creosote, hazardous and solid wastes, PAHs, supercritical water, transformation/recovery/recycling, utility poles, woodAbstract
This paper describes the treatment of creosote-treated wood in anoxic supercritical water (SC). Decommissioned (ca. 15 yr) creosote-treated pine utility pole wood, which had been chipped was hydro-treated directly. During treatment, the creosote-derived hydrocarbon residues in the wood were nearly completely (>99%) recovered, and the wood itself was transformed into a mixture of hydrocarbons including substituted benzenes, phenolics, and light PAHs. These wood-derived transformation products served to reconstitute the "light end" of the creosote, which had been largely lost while in service. Thus, the hazardous waste (creosote hydrocarbon mixture) was recovered, and the solid waste (wood) was transformed into a complementary product mixture in a single pass. Solid residues after 12-20 h of treatment were <2% w/w.References
American Wood Preservers Institute (AWPI). 1997. Technical profile creosote-preserved wood as an alternate fuel. Fairfax, VA.nCatallo, W. J. 1996. Transformation of N-, O- and S- heterocycles (NOSHs) in estuarine sediments: Effects of redox potential and particle size. Chemosphere33(12): 2543-2563.nCatallo, W. J., and R. P. Gambrell. 1987. The effects of high levels of polycyclic aromatic hydrocarbons on sediment physicochemical properties and benthic organisms in a polluted stream. Chemosphere16(5):1053-1063.nCatallo, W. J., and T. Junk. 2001. Transforming Biomass to Hydrocarbon Mixtures in Near-critical and Supercritical Water. United States Patent. #6,180,845.nCooper, P. A. 1994. Disposal of treated wood removed from service: The issues. Pages 85-90 in Environmental considerations in the manufacture, use, and disposal of preservative-treated wood. Forest Products Society, Madison, WI.nJimeno, M. L., N. Jagerovic, J. Elguero, T. Junk, and W. J. Catallo. 1997. 1H and 13C study of perdeuterated pyrazoles. Spectroscopy13:291-294.nJunk, T., and W. J. Catallo. 1997. Organic reactions in supercritical polar fluids. Chemical Soc. Rev.26:401-406. Royal Society of Chemists, UK.nJunk, T., W. J. Catallo, and L. D. Civils. 1997a. Synthesis of polydeuterated benzothiazoles via supercritical deuteration of anilines. J. Labelled Comp. Radiopharm.39(8): 625-630.nJunk, T., W. J. Catallo, J. Elguero. 1997b. Synthesis in superheated aqueous media: Preparation of fully deuterated pyrazoles and quinoxalines. Tetrahedron Letts.38(36):6309-6312.nMicklewright, J. T. 1998. Wood preservation statistics 1997. American Wood Preservers' Assoc. Granbury, TX. 25 pp.nMizuno, T., M. Goto, A. Kodama, and T. Hirose. 2000. Supercritical water oxidation of a model municipal solid waste. Ind. Eng. Chem. Res.39(8):2807-2810.nPortier, R. J., D. G. Hoover, and M. S. Miles. 1994. Recovery of wood fiber from treated wood products by combined physical, chemical, and biological approaches. Unpublished Report. Institute for Environmental Studies. Louisiana State University, Baton Rouge, LA.nRoliadi, H. 1997. The recycling potential of out-of-service utility poles for engineered wood products. Ph.D. dissertation, Louisiana State University, Baton Rouge, LA. 201 pp.nRostad, C. E., W. E. Pereira, and S. M. Ratcliff. 1984. Bonded-phase extraction column isolation of organic compounds in groundwater at a hazardous waste site. Anal. Chem.56:2856-2860.nVan Eldik, R., and C. D. Hubbard. 1997. Chemistry under extreme or non-classical conditions. John Wiley & Sons, Inc, New York, NY. 555 pp.nWarshawsky, D. 1992. Environmental sources, carcinogenicity, mutagenicity, metabolism, and DNA binding of nitrogen and sulfur heterocyclic aromatics. Environ. Carcino. & Ecotox. Revs.C(10):1-71.n
Downloads
Published
Issue
Section
License
The copyright of an article published in Wood and Fiber Science is transferred to the Society of Wood Science and Technology (for U. S. Government employees: to the extent transferable), effective if and when the article is accepted for publication. This transfer grants the Society of Wood Science and Technology permission to republish all or any part of the article in any form, e.g., reprints for sale, microfiche, proceedings, etc. However, the authors reserve the following as set forth in the Copyright Law:
1. All proprietary rights other than copyright, such as patent rights.
2. The right to grant or refuse permission to third parties to republish all or part of the article or translations thereof. In the case of whole articles, such third parties must obtain Society of Wood Science and Technology written permission as well. However, the Society may grant rights with respect to Journal issues as a whole.
3. The right to use all or part of this article in future works of their own, such as lectures, press releases, reviews, text books, or reprint books.
