CCA leaching from treated timber posts
نویسندگان
چکیده
CCA transport in soil from treated-timber posts: pattern dynamics from the local to regional scale B. E. Clothier, S. R. Green, I. Vogeler, M. M. Greven, R. Agnew, C. W. van den Dijssel, S. Neal, B. H. Robinson, and P. Davidson Sustainable Land Use Team, HortResearch, Private Bag 11-030, Palmerston North, New Zealand Sustainable Land Use Team, HortResearch, Private Bag 845, Blenheim, New Zealand Marlborough District Council, Private Bag 443, Blenheim, New Zealand Institute of Terrestrial Ecology, ETHZ, Grabenstrasse 3, 8952 Schlieren, Switzerland Received: 15 February 2006 – Accepted: 3 July 2006 – Published: 2 August 2006 Correspondence to: B. E. Clothier ([email protected])
منابع مشابه
Leaching of copper, chromium and arsenic from treated vineyard posts in Marlborough, New Zealand.
There have been conflicting reports as to the extent that copper-chromium-arsenic (CCA) treatments leach from timber. In New Zealand, vineyards utilise CCA-treated posts at a rate of 579 posts per hectare. This represents a potential CCA burden on the soil of 12, 21, and 17 kg/ha, respectively, for the three elements. Given a replacement rate of 4% per year, the use of CCA-treated posts may res...
متن کاملThe impact of CCA-treated posts in vineyards on soil and ground water.
Grapes in Marlborough are typically grown on a vertical shoot positioned trellis system (VSP). For this purpose Pinus radiata posts are treated with CCA, a mixture of copper (Cu), chromium (Cr) and arsenic (As), giving a wood concentration of 1,730, 3,020 and 2,410 mg/kg, respectively on a dry matter basis. The CCA levels around the posts in different soils were investigated and assessed for th...
متن کاملLeaching of chromated copper arsenate wood preservatives: a review.
Recent studies have generated conflicting data regarding the bioaccumulation and toxicity of leachates from preservative-treated wood. Due to the scale of the wood preserving industry, timber treated with the most common preservative, chromated copper arsenate (CCA), may form a significant source of metals in the aquatic environment. The existing literature on leaching of CCA is reviewed, and t...
متن کاملDeportment and management of metals produced during combustion of CCA-treated timbers.
Experiments were conducted to study CCA-treated wood combustion over a range of temperature and oxygen concentrations with a view to understanding the factors affecting energy and metals recovery from waste treated timber. CCA-treated wood was burned in a furnace at temperatures from 400 to 940 degrees C and oxygen concentrations between 5 and 21%. The ash and condensed volatiles were digested ...
متن کاملPreservative leaching from weathered CCA-treated wood.
Disposal of discarded chromated copper arsenate (CCA)-treated wood in landfills raises concerns with respect to leaching of preservative compounds. When unweathered CCA-treated wood is leached using the toxicity characteristic leaching procedure (TCLP), arsenic concentrations exceed the toxicity characteristic (TC) limit of 5mg/L in most cases. The majority of discarded CCA-treated wood, howeve...
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تاریخ انتشار 2006