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US 2022/0176181 A1Published application
Timber remediation
AssigneeTreated Timber Remediation Pty. Ltd
InventorsPeter John Waters, Timothy Ralston Lang
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Abstract
Disclosed herein is a method of remediating chromated copper arsenate (CCA) treated timber. Particularly, the method comprises contacting the CCA timber with an oxidative solvent and an acidic solvent which provides remediated timber and a variety of extracts containing amongst other things the metals of concern. One or more of the steps is conducted using continuous counter current extraction (CCE).
Claims27
A method of chromated copper arsenate (CCA) treated timber remediation, the method comprising the steps of:
- contacting the CCA timber with an acidic solvent to provide an acidic extract;
- contacting the CCA timber with an oxidative solvent to provide an oxidative extract;
- and
- separating the contacted timber from the oxidative extract and acidic extract to produce a supernatant and a remediated timber,
- wherein one or more of the steps is conducted using continuous counter current extraction (CCE).
2 more elements
(canceled)
Dependencies are inferred from the claim text.