wood preservation, oscillating pressure method, inorganic salt, containing Cr, outdoor use, ground contact, UPR, ecoinvent 3.6, Undefined

Categories:
ISIC4 categories:
C:Manufacturing/16:Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials/161:Sawmilling and planing of wood/1610:Sawmilling and planing of wood
Location:
RER - Europe
Reference year: 2012 - 2012
Description

Location: RER - Europe
This dataset covers the treatment of undried timber with inorganic CCB (chromium, copper, boron) salt with the oscillating pressure method.
Wood is not included in the dataset.
Pressure processes have been used for more than 150 years for impregnating wood with preservatives. The choice of the pressure process depends on the intended use, the nature and quality of the preservative, and the moisture level of the wood at the time of treatment.The oscillating pressure method was developed to impregnate green cordwood, particularly roundwood that is difficult to treat in the dry state. In this process, vacuum and pressure phases alternate, wheregy the phase changeover occurs in tess than a second. During the vacuum phases a small quantity of liquid is sucked out of the wood, and in the compression phases the salt solution is pressed in. As the impregnation period continues the pressure phases increase in lenght. For example, with green spruces, ca. 400 phase changes occur during the ca. 22-h impregnation process. Here the sap still present in the wood is continuously replaced by preservative liquid with an increase in the impregnation of the sapwood. For wood that is difficult to impregnate, the oscillating pressure method gives better impregnation and greated penetration depths than the vacuum-pressure method (also called full-cell or saturation impregnation method). Only water-borne preservaties are used.
The following figure illustrates the prinicple of the oscillating pressure method.
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Undefined unit processes (UPRs) are the unlinked, multi-product activity datasets that form the basis for all of the system models available in the ecoinvent database. This is the way the datasets are obtained and entered into the database by the data providers. These activity datasets are useful for investigating the environmental impacts of a specific activity (gate-to-gate), without regard to its upstream or downstream impacts.

Process type
Unit
Supported nomenclature
ecoinvent 3.6
LCI modeling approach
Before modeling
Multifunctional modeling
NONE
Format
ECOSPOLD2
Aggregation type
NOT_APPLICABLE
Data provider
ecoinvent
Review status
External
Cost
For sale
License

ecoinvent EULA

Contact
support@ecoinvent.org