Your search resulted in 1056 documents. Displaying 25 entries per page.
Inhibition of Basidiospore Germination by Copper from MCQ, ACQ and CCA Leachates
2012 - IRG/WP 12-10778
…decay resistance of refractory wood shell-treated with chromated copper arsenate (CCA) in above-ground exposures has been attributed to mobile copper that migrates into checks and inhibits the germination of basidiospores. Copper from micronized copper quat (MCQ) has also been shown to migrate into checks…
R Stirling, J Drummond, P I Morris
Fixation and leaching characteristics of Malaysian tropical hardwoods treated with CCA-C
2012 - IRG/WP 12-50289
…8 Malaysian tropical hardwood (MTH) species treated with chromated copper arsenate (CCA-C) wood preservative were examined. The species evaluated were Acacia (Acacia mangium), Bintangor (Calophyllum sp.), Geronggang (Cratoxylon arborescens), Medang (Litsea sp.), Meranti rambai daun (Shorea acuminata), Putat…
S Salim, S Shahomlail, Z Ashaari, Yong-Seok Choi, Gyu-Hyeok Kim
Molecular investigation of Postia placenta growing in modified wood
2011 - IRG/WP 11-10756
…was used for the following treatments and modifications: chromated copper arsenate CCA (0.67%), furfurylation (WPG 37), thermal modification (D212) and acetylation (WPG 23). Untreated Pinus sylvestris (L.) sapwood was used as control. Samples were taken at different time intervals from 2 to 26 weeks.
The highest…
B Schmöllerl, G Alfredsen, C G Fossdal, M Westin, A Steitz
Ten Year Field Tests of Borate-Treated Wood Against Subterranean Termites
2011 - IRG/WP 11-30557
…lumber treated with disodium octaborate tetrahydrate and chromated copper arsenate (CCA) and local reference materials. In Canada all of the treated material was found to be performing equally well after ten years, with some pieces showing residual signs of early superficial nibbling or cosmetic damage. Attack was…
P I Morris, J K Grace, K Tsunoda
Sensitivity to Copper of Basidiospores from Copper Tolerant Fungi: Fomitopsis palustris and Oligoporus placentus
2010 - IRG/WP 10-10707
Copper continues to be an important fungicide in wood preservation. It is the primary component of the preservatives that have replaced chromated copper arsenate for treated wood in residential construction in North America. However, a co-biocide is normally…
C S Woo, P I Morris
Seasonal shifts of fungal community structure at the interface of treated or untreated wood and soil
2010 - IRG/WP 10-10721
…(longitudinal)) were treated with a formulation of chromium-copper-arsenic-(CCA) at two concentrations. Untreated wood of the same dimensions was used as controls. After drying and an appropriate fixation period, the specimens were buried in soi1 up to half of their length at the BAM test site in North East Germany.…
M Noll, I Stephan
Microwave-Assisted Organic Acids Extraction of Chromate Copper Arsenate (CCA)-Treated Southern Pine
2010 - IRG/WP 10-50267
…recovery of CCA-treated wood were evaluated. Extraction of copper, chromium, and arsenic metals from chromated copper arsenate (CCA)-treated southern pine wood samples with two different organic acids (i.e., acetic acid and oxalic acid) was investigated using a microwave reactor. Oxalic acid was effective in removing…
Bin Yu, Chung Y Hse, T F Shupe
SEM-EDXA of CCA-treated Rubberwood (Hevea brasiliensis)
2009 - IRG/WP 09-20399
The microdistribution of chromated copper arsenate (CCA) preservative in rubberwood was studied using scanning electron microscope in conjunction with energy dispersive X-ray analyzer (SEM-EDXA). Bulk X-ray analysis showed that there was a high accumulation of chromium, copper, and…
I Jusoh, D P Kamdem
Factors affecting sodium hypochlorite extraction of CCA preservative components from out of service treated wood for recycling
2009 - IRG/WP 09-50263
Significant amounts of chromated copper arsenate (CCA) treated wood products such as utility poles and residential constructions remain in service. There is an increasing public concern about environmental contamination from CCA treated wood when it is removed from service for…
E D Gezer, P A Cooper
Effects of concentration and temperature of CCA and CCB on wood strength of Turkish fir (Abies bornmulleriana Mattf.)
2009 - IRG/WP 09-40450
…and temperature of solutions of water-borne preservatives (chromated copper arsenate, CCA and chromated copper boron, CCB) on the static bending properties (modulus of elasticity, MOE and modulus of rupture, MOR) of Turkish fir (Abies bornmulleriana Mattf.). Wood samples were mechanically tested after a mild full…
I Usta, M Hale
Relationship between coating properties and their performance on treated wooden decks
2008 - IRG/WP 08-30454
…The performance of a range of semi-transparent stains on chromated copper arsenate (CCA), alkaline copper quaternary (ACQ) and copper azole (CA) treated Southern pine wood was monitored over 18 months of natural weathering in Toronto, Canada. Additionally, the samples were tested under accelerated weathering…
M Ahmadinejad, P A Cooper
Ecotoxicity of furfurylated wood – Effect of leachate on aquatic bacteria
2008 - IRG/WP 08-50250
…regarding the use of toxic preservatives such as CCA (chromated copper arsenate) has been put forward. In the EU, USA and Japan, CCA is now phased out for residential use and for use in water contact. Several ecotoxicological studies of wood treated with conventional preservatives were carried out in the late…
A Pilgård, M Westin
Thermochemical Remediation of Preservative-Treated Wood
2008 - IRG/WP 08-50254
…(As, Cr, and Cu) were thermochemically extracted from chromated copper arsenate (CCA) treated Spruce using solutions of oxalic acid and sodium hydroxide. Oxalic acid was found to be highly effective for removing As and Cr, whereas mixtures of oxalic acid and sodium hydroxide were more effective for removing…
R Sabo, C A Clausen, J E Winandy
Corrosion of fastener and connector in contact with alkaline copper treated wood – it is a problem
2008 - IRG/WP 08-40437
For many decades, chromated copper arsenate (CCA) was the most common wood preservative used in North America for residential and industrial applications. Since December 31, 2003, the use of CCA for residential application was voluntarily terminated. One of the most widely…
J N R Ruddick
Comparison of laboratory and natural exposure leaching of copper from wood treated with three wood preservatives
2008 - IRG/WP 08-50258
…laboratory and field leaching tests were used to compare copper leaching from wood treated to above ground and ground contact specified retentions for three wood preservative systems, CCA-C, ACQ-D and a micronized copper formulation with quat DDAC as co-biocide. Copper leaching was highest for the ACQ formulation.…
P A Cooper, Y T Ung
Silver – The Next Generation Wood Preservative
2007 - IRG/WP 07-30419
…be an effective wood preservative to be used in place of chromated copper arsenate (CCA) now prohibited for use in the United States and elsewhere for treated wood manufactured for consumer uses such as decks, playground equipment, and picnic tables. Commercial silver-based biocide formulations and silver chemicals…
J R Ellis, K Jayachandran, D Nicholas
The effect of additives on copper losses from alkaline copper treated wood
2007 - IRG/WP 07-50246
The replacement of chromated copper arsenate (CCA) by alkaline copper compounds has heightened awareness of the potential impact of copper losses on aquatic organisms. While there remains a healthy debate concerning the actual risk of copper leaching from wood preservatives…
J Mitsuhashi, J J Morrell, L Jin, A F Preston
Kd values of Cu, Cr, As in different soil matrix
2007 - IRG/WP 07-50247
Chromated copper arsenate (CCA), a long history of successful preservative, have raised environmental concerns. Adsorption characteristics of domestic soils for chromium, copper, and arsenic were assessed by measuring distribution coefficient (Kd) values of…
Sung-Mo Kang, Seung-Hun Shin, Ja-Oon Koo
Chapter 13 - Slow fixation of CCA-treated bamboo
2007 - IRG/WP 07-10635-13
Chromated copper arsenate (CCA) leachability tests on full-cell
pressure impregnated (with 2-3% CCA solution) and slow dried (six
months air-drying under cover) bamboo block of three major
bamboo species of Bangladesh revealed initial insignificant…
A K Lahiry
Chapter 14 - Accelerated fixation of CCA-treated bamboo
2007 - IRG/WP 07-10635-14
Chromated copper arsenate type C (CCA-C) fixation study on
impregnated (with adequate w/v 6% CCA solution) then boiled,
oven-dried, normal, air-dried and steamed bamboo slices of airdried
borakbamboo (Bambusa balcooa Roxb.) of Bangladesh,
revealed almost…
A K Lahiry
Biological variability in the oxalate/oxalate decarboxylase system among five isolates of the wood-degrading fungus Meruliporia incrassate
2006 - IRG/WP 06-10573
…a voluntary withdrawal of the historically effective chromated-copper arsenate (CCA) as a preservative for wood used in residential settings. As the new generation of copper-based preservatives appear to be less effective against this fungus, it is becoming increasingly important to new countermeasures against…
C Howell, J Jellison
Performance of borate-treated lumber after 8 years in an above-ground termite field test in Hawaii
2006 - IRG/WP 06-30390
…and 3% BAE shell and through) wood treatments. In Hawaii, chromated copper arsenate (CCA, 4 kg/m3) and ammoniacal copper zinc arsenate (ACZA, 4 kg/m3) were included in the test, along with untreated western hemlock and Pacific silver fir controls. Both field sites support active Formosan subterranean termites,…
J K Grace, A Byrne, P I Morris, K Tsunoda
Exposure of CCA and ACZA treated parallel strand lumber to marine borer attack in northeastern and southeastern waters of the United States of America
2006 - IRG/WP 06-30400
…fir Parallel Strand Lumber (PSL) panels were treated with chromated copper arsenate (CCA) or ammoniacal copper zinc arsenate (ACZA), respectively and exposed in a marine environment in Massachusetts (northeastern USA coast) for 7 years. Similarly treated panels were also exposed to a site on the Atlantic coast…
B Goodell, P Merrick, J Jellison, Y Qian
Thermal decomposition behavior of CCA-treated wood for safe disposal and the safe recovery of heavy metals through pyrolysis
2006 - IRG/WP 06-50238
…the chemical changes in heavy metals by temperature in chromated copper arsenate (CCA)-treated wood during pyrolysis, it is expected that we could solve the environmental problems of heavy metals, which may occur during pyrolysis, and therefore, the thermal decomposition behavior of effective elements of…
Dong Won Son, Dong-heub Lee, Sun-hae Cheon, Myung Jae Lee
Leaching of Arsenic from Mulch Made from Recycled Construction and Demolition Wood
2005 - IRG/WP 05-50232
…and demolition (C&D) wood has been reported to contain chromated copper arsenate (CCA)-treated wood and potentially release arsenic in the leachate by rainfall. Such recycled wood mulch is commonly masked with iron-oxide colorant, which is known to combine with arsenic. The objective of this study was to…
T Shibata, H M Solo-Gabriele, T G Townsend, B Dubey