Cation Exchange Capacity Tests on Some Lignocellulosic Materials Highlight Some Aspects of the Use of Copper as Wood Preservative

Abstract

The used lignocellulosic materials derive from the hardwood species Populus euramericana, from the softwood species Pinus pinea and from raw cellulosic fibers characterised by variable lignin content like flax, hemp and cotton. The woods and fibers Holzforschung / Vol. 54 / 2000 / No. 2

Copper monoethanolamine adsorption in wood and its relation with cation exchange capacity (CEC)

“…Similar monovalent-like Cu adsorption was reported by Staccioli et al (2000). This effect allows the possibility that adsorbed Cu can electrostatically attract other anionic chemicals, which will be investigated in future studies.…”

Crude and modified corncobs as complexing agents for water decontamination

“…In the view of the results obtained in this preliminary study, an optimum copper retention capacity of 0.11 mmol g −1 was found at pH 4. This value compares favorably with the retention capacities displayed by other lignocellulosic materials7, 11, 14, 17, 24, 25 but is still insufficient for corncobs to really compete with synthetic ion‐exchange resins. The chemical grafting of carboxylic acid groups onto corncobs was, therefore, considered.…”

“…In this context, lignocellulosic materials, such as wood, bark, and plant fibers, and other natural substances are currently considered potential candidates for water decontamination. Although the adsorptive properties of these natural products have been reported elsewhere,7–9 their low cost, biodegradability, and renewability permit researchers to envision the development of a new kind of biofilter, both inexpensive and natural.…”

Enhancement of Technology from Old Preservatives to New Preservatives and Latest Development in the Field of Preservation

“…Copper compounds are used as preservatives. Cation exchange capacity test on some lignocellulosic material highlight some aspect of the use copper as wood preservatives (Sttaccioli et al, 2000).…”