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Copper monoethanolamine adsorption in wood and its relation with cation exchange capacity (CEC)
To investigate the chemical adsorption capacity of Cu-Mea (copper monoethanolamine) components on wood, the Na(x) CEC (cation exchange capacity) of red pine (Pinus resinosa Ait.) was determined and compared with the adsorption capacity of free Mea, Cu(2+) and Cu-Mea complexes. Red pine showed higher CEC as pH increased. Free Mea adsorption as a function of pH followed the Na adsorption curve except at pH over 9, when it exceeded the CEC. Below pH 5, where Cu-Mea complexes do not form, divalent Cu(2+) was adsorbed as if it were monovalent. Cu-Mea adsorbed up to the CEC at pH 9.0 to 9.5 apparently as [CuMea]+, whereas the complex in solution is predominantly of the form [Cu(Mea)2]+. FTIR analysis showed that the same sites of wood are related to Mea, Na, and Cu adsorption.
Copper monoethanolamine adsorption in wood and its relation with cation exchange capacity (CEC)
To investigate the chemical adsorption capacity of Cu-Mea (copper monoethanolamine) components on wood, the Na(x) CEC (cation exchange capacity) of red pine (Pinus resinosa Ait.) was determined and compared with the adsorption capacity of free Mea, Cu(2+) and Cu-Mea complexes. Red pine showed higher CEC as pH increased. Free Mea adsorption as a function of pH followed the Na adsorption curve except at pH over 9, when it exceeded the CEC. Below pH 5, where Cu-Mea complexes do not form, divalent Cu(2+) was adsorbed as if it were monovalent. Cu-Mea adsorbed up to the CEC at pH 9.0 to 9.5 apparently as [CuMea]+, whereas the complex in solution is predominantly of the form [Cu(Mea)2]+. FTIR analysis showed that the same sites of wood are related to Mea, Na, and Cu adsorption.
Copper monoethanolamine adsorption in wood and its relation with cation exchange capacity (CEC)
Myung Jae Lee (author) / Cooper, Paul (author)
Holzforschung ; 64 ; 653-658
2010
6 Seiten, 4 Bilder, 37 Quellen
Article (Journal)
English
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