Authors: Sedric Pankras Paul A Cooper Lucie Coudert JeanFrancois Blais Guy Mercier
Publish Date: 2014/01/23
Volume: 48, Issue: 2, Pages: 393-409
Abstract
Remediation of copperbased alkaline copper quat ACQ and micronized copper quat MCQ woodpreservativetreated weathered southern pine mulch samples by monoethanolamine Mea extraction was studied The potential reuse of Mea extract in ACQ wood preservative application was also evaluated Continuous column extraction of copperpreservativetreated samples for 32 h using 12 Mea removed 66–86 between top and bottom of the column and 65–80 of Cu respectively from ACQ and MCQtreated wood Mea extracts of treated wood could be reused in ACQtreating solutions that met the American Wood Protection Association standard specifications for ACQ wood preservatives This was achieved either by mixing the extract with industrial Cu–Mea solution at 14 ratio or by adding cupric acetate salt directly into the Mea extract ACQtreating solutions reformulated using Mea extracts of ACQ and MCQtreated wood performed similarly to wood treated with industrial ACQ solution and freshly prepared solution using cupric acetate All treated wood had similar penetrations of Cu in wood during preservative treatment Cu leaching from the treated wood in contact with water corrosion of nails in contact with treated wood and ability to protect wood from mold growth
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