The Experts below are selected from a list of 267 Experts worldwide ranked by ideXlab platform

Ohio Agricultural Experiment Station. Dept. Of Forestry. - One of the best experts on this subject based on the ideXlab platform.

H. M. Barnes - One of the best experts on this subject based on the ideXlab platform.

  • Effect of post-treatment steaming on the bending properties of southern pine treated with Copper Naphthenate
    Forest Products Journal, 2007
    Co-Authors: H. M. Barnes, J. M. Linton, G. B. Lindsey
    Abstract:

    The effect of steaming after treatment was evaluated for southern pine treated with a waterborne Copper Naphthenate formulation. Little practical effect on the mechanical properties was noted. Steaming for 2 hours had a greater effect than a 30-minutes steam period. No difference in modulus of elasticity and modulus of rupture, work to proportional limit, work to maximum load, or fiber stress at proportional limit between samples steamed following treatment and those only treated was shown. Differences between untreated and treated samples were ascribed to treatment rather than steaming. This treatment effect is common with waterborne preservative treatments.

  • Copper Naphthenate treatments for engineered wood composite panels.
    Bioresource Technology, 2005
    Co-Authors: J.w. Kirkpatrick, H. M. Barnes
    Abstract:

    This paper reports on preliminary investigation of the properties of randomly oriented strandboard which had waterborne or powdered Copper Naphthenate incorporated into the board during manufacture. When compared to zinc borate-treated controls, the mechanical properties of strandboard were not adversely affected by treatment with either form of Copper Naphthenate. In general, values for mechanical properties followed the trend untreated controls > waterborne CuN = powdered CuN > ZnB. Water absorption and dimensional properties followed a similar trend. This preliminary study suggests that CuN is a viable alternative treatment for engineered wood composites.

  • A Preliminary Investigation of the Properties of Engineered Wood Composite Panels Treated with Copper Naphthenate
    2005
    Co-Authors: J.w. Kirkpatrick, H. M. Barnes
    Abstract:

    This paper reports on our preliminary investigation of the properties of randomly oriented strandboard which had waterborne or powdered Copper Naphthenate (CuN) incorporated into the board during manufacture. When compared to zinc borate-treated controls (ZnB), the mechanical properties of strandboard (MOR, MOE, work-to-maximum load, internal bond strength) were not adversely affected by treatment with either form of Copper Naphthenate. In general, values for mechanical properties followed the trend untreated controls> waterborne CuN = powdered CuN> ZnB. Water absorption and dimensional properties followed a similar trend. This preliminary study suggests that CuN is a viable alternative treatment for engineered wood composites

  • Performance of Copper Naphthenate and its analogs as ground contact wood preservatives.
    Bioresource Technology, 2004
    Co-Authors: H. M. Barnes, Terry L. Amburgey, Michael G. Sanders
    Abstract:

    For several years, an extensive research program investigating new preservative systems has been ongoing at Mississippi State University. This paper details our continuing experience with field testing of Copper Naphthenate and other Copper carboxylate preservative systems. Results from field stake tests at an AWPA Zone 4 test site are presented. In general, Copper carboxylates made with 'synthetic' acids yielded results equivalent to or only slightly lower than systems with straight naphthenic acids or nap acids amended with synthetic neodecanoic acid bottoms. Oil carrier formulations outperformed those in water or light organic solvents. All systems carried in oil would qualify as ground contact preservatives at the proper retention.

  • Performance of Copper-Naphthenate-treated poles in service
    Forest Products Journal, 2002
    Co-Authors: H. M. Barnes, J. A. Brient, M. H. Freeman, C. N. Kerr
    Abstract:

    Copper-Naphthenate-treated poles in service were inspected for deterioration, penetration,retention, andserviceabi1ity.Thestudyincludedpolesinall hazardzonesin the United States. Poles installed by 12 different utilities and treated by 8 different treating companiesareincludedin thesurvey. BothsouthempineandDouglas-firpolesanddistribution and transmission poles are included in the survey. Only two of the surveyed poles were considered failures, indicating that properly treated Copper Naphthenate poles are performing satisfactorily.

Nicole Labbe - One of the best experts on this subject based on the ideXlab platform.

  • environmentally friendly process for recovery of wood preservative from used Copper Naphthenate treated railroad ties
    ACS Sustainable Chemistry & Engineering, 2017
    Co-Authors: Holly Lauren Haber, Jeff Lloyd, Stephen C Chmely, Yagya N. Regmi, Nourredine Abdoulmoumine, Nicole Labbe
    Abstract:

    Removal of Copper Naphthenate (CN) from used wooden railroad ties was investigated to improve the commercial viability of this biomass as a fuel source and avoid alternative disposal methods such as landfilling. Bench-scale thermal desorption of organic preservative components from CN-impregnated ties was followed by extraction of the Copper fraction with ethylenediaminetetraacetic acid, 1-hydroxy ethylidene-1,1-diphosphonic acid, or 2,6-pyridine dicarboxylic acid (PDA). Naphthenic acid (NA) and carrier oil were recovered at desorption temperatures between 225 and 300 °C and could potentially be recycled to treat new ties. The thermal treatment also mimicked torrefaction, improving the biomass properties for use as a thermochemical conversion feedstock. Chelation with PDA, a biodegradable chelating agent, after desorption had the highest extraction efficiency of Copper and other naturally present inorganics, extracting 100% of the Copper from both the raw and 225 °C-treated samples. Optimized desorbed mat...

Jeff Lloyd - One of the best experts on this subject based on the ideXlab platform.

  • dual borate and Copper Naphthenate treatment of bridge timbers potential cost savings by various performance enhancements
    Wood Material Science and Engineering, 2018
    Co-Authors: Jeff Lloyd, Christian Brischke, Richard M. Bennett, Adam Taylor
    Abstract:

    ABSTRACTDual-treatment technology combining diffusible preservatives with oil-borne preservatives, widely used for crossties in the USA, has now also been commercialized with bridge ties/timbers. In order to understand the implications of these changes, the historic service life of creosote-treated bridge timbers in northern and southeastern USA were considered as well as field-test data for both creosote and Copper Naphthenate. These were used to estimate potential future service life. Estimates on life expectancy with added borates were also made from published data on performance. Cost–benefit analysis based on creosote and Copper Naphthenate costs as well as assumptions made from field-test efficacy data suggest cost savings of up to $20 per timber per year of additional service. Service life extension and the resulting cost savings could be achieved in a number of ways: change preservative from creosote to Copper Naphthenate; increase active ingredient retention; and/or add dual-treatment protection....

  • environmentally friendly process for recovery of wood preservative from used Copper Naphthenate treated railroad ties
    ACS Sustainable Chemistry & Engineering, 2017
    Co-Authors: Holly Lauren Haber, Jeff Lloyd, Stephen C Chmely, Yagya N. Regmi, Nourredine Abdoulmoumine, Nicole Labbe
    Abstract:

    Removal of Copper Naphthenate (CN) from used wooden railroad ties was investigated to improve the commercial viability of this biomass as a fuel source and avoid alternative disposal methods such as landfilling. Bench-scale thermal desorption of organic preservative components from CN-impregnated ties was followed by extraction of the Copper fraction with ethylenediaminetetraacetic acid, 1-hydroxy ethylidene-1,1-diphosphonic acid, or 2,6-pyridine dicarboxylic acid (PDA). Naphthenic acid (NA) and carrier oil were recovered at desorption temperatures between 225 and 300 °C and could potentially be recycled to treat new ties. The thermal treatment also mimicked torrefaction, improving the biomass properties for use as a thermochemical conversion feedstock. Chelation with PDA, a biodegradable chelating agent, after desorption had the highest extraction efficiency of Copper and other naturally present inorganics, extracting 100% of the Copper from both the raw and 225 °C-treated samples. Optimized desorbed mat...

  • Dual borate and Copper Naphthenate treatment of bridge timbers – potential cost savings by various performance enhancements
    Wood Material Science and Engineering, 2017
    Co-Authors: Jeff Lloyd, Christian Brischke, Richard M. Bennett, Adam Taylor
    Abstract:

    ABSTRACTDual-treatment technology combining diffusible preservatives with oil-borne preservatives, widely used for crossties in the USA, has now also been commercialized with bridge ties/timbers. In order to understand the implications of these changes, the historic service life of creosote-treated bridge timbers in northern and southeastern USA were considered as well as field-test data for both creosote and Copper Naphthenate. These were used to estimate potential future service life. Estimates on life expectancy with added borates were also made from published data on performance. Cost–benefit analysis based on creosote and Copper Naphthenate costs as well as assumptions made from field-test efficacy data suggest cost savings of up to $20 per timber per year of additional service. Service life extension and the resulting cost savings could be achieved in a number of ways: change preservative from creosote to Copper Naphthenate; increase active ingredient retention; and/or add dual-treatment protection....

  • Environmentally Friendly Process for Recovery of Wood Preservative from Used Copper Naphthenate-Treated Railroad Ties
    2017
    Co-Authors: Holly L. Haber, Jeff Lloyd, Stephen C Chmely, Yagya N. Regmi, Nourredine Abdoulmoumine, Pyoungchung Kim, Nicole Labbé
    Abstract:

    Removal of Copper Naphthenate (CN) from used wooden railroad ties was investigated to improve the commercial viability of this biomass as a fuel source and avoid alternative disposal methods such as landfilling. Bench-scale thermal desorption of organic preservative components from CN-impregnated ties was followed by extraction of the Copper fraction with ethylenediaminetetraacetic acid, 1-hydroxy ethylidene-1,1-diphosphonic acid, or 2,6-pyridine dicarboxylic acid (PDA). Naphthenic acid (NA) and carrier oil were recovered at desorption temperatures between 225 and 300 °C and could potentially be recycled to treat new ties. The thermal treatment also mimicked torrefaction, improving the biomass properties for use as a thermochemical conversion feedstock. Chelation with PDA, a biodegradable chelating agent, after desorption had the highest extraction efficiency of Copper and other naturally present inorganics, extracting 100% of the Copper from both the raw and 225 °C-treated samples. Optimized desorbed material showed a 64% decrease in ash content when extracted with PDA; however, extraction efficiency decreased as desorption temperature increased, indicating that thermal treatment caused the inorganics to be less extractable. We concluded that the optimum desorption conditions were between 250 and 275 °C for 45 min followed by extraction with PDA when considering both NA removal and inorganic extraction efficiency

Mike H. Freeman - One of the best experts on this subject based on the ideXlab platform.

  • Independent Wood Scientist
    2015
    Co-Authors: Mike H. Freeman, Douglas Crawford, Patricia Lebow, James A. Brient
    Abstract:

    Abstract: Wood preservatives extend the useful service life of all wooden commodities used above ground and in ground contact, Over SO years ago, the USDA-Forest Products Lab established tests in a high decay and high termite hazard zone in southern Mississippi. During the last five decades, periodic reports have been issued by researchers located at the USDA-FPL, in Madison, WI, on the efficacy and performance of southern pine fence posts treated with a variety of wood preservatives. Since 1977, no report has been issued by the USDA-FPL on the performance of these various preservatives in southern pine posts. This study was undertaken to evaluate the long-term efficacy of over 50 wood preservatives in southern pine wood in ground contact. This study reassessed the condition of the treated wood posts in southern Mississippi, and statistically calculated the new expected post life span. It was determined that commercial wood preservatives, like pentachlorophenol in oil, creosote, and Copper Naphthenate in oil, provided excellent protection for posts, with life spans now calculated to exceed 60 years. Surprisingly, creosote and penta treated posts at 75 % of the recommended AWPA retention, and Copper Naphthenate at 50 % of the required AWPA retention, gave excellent performance in this AWPA Hazard Zone 5 site. Untreated southern pine posts lasted 2 years in this test site

  • The Effect of Post-Steaming on Copper Naphthenate-Treated Southern Pine
    Wood and Fiber Science, 2007
    Co-Authors: D. Pascal Kamdem, Jun Zhang, Mike H. Freeman
    Abstract:

    The reduction of Copper from cupric (Cu 2+ ) to cuprous (Cu 1+ ) form in post-steamed Copper naphthe-nate-treated southern pine was monitored. The amount of cuprous oxide formed after the post-steam treatment was determined by X-ray diffraction (XRD). About 50% of Copper was reduced from cupric to cuprous in post-steamed samples treated to a retention of 0.31 to 0.51% total Copper. Less than 15% of the Copper was reduced to cuprous in the post-steamed samples containing 0.71% total Copper. Environmental scanning electron microscopy (ESEM) was used to collect images of the crystalline cuprous oxide deposits on the wood cell walls.