CHEMICAL FIXATION OF CCA-C PRESERVATIVE IN WOOD OF PINUS ELLIOTTII PART 2: KINETICS AND MODELING

被引：0

作者：

Wottitz, Carlos A. ^{[1
]}

Moreno, Graciela A. ^{[2
]}

机构：

[1] Univ Nacl Santiago del Estero, Fac Ciencias Exactas & Tecnol, Catedra Quim, Santiago Del Estero, Argentina

[2] Univ Nacl Santiago del Estero, Fac Ciencias Forestales, Inst Tecnol Madera, Santiago Del Estero, Argentina

来源：

MADERAS-CIENCIA Y TECNOLOGIA | 2013年 / 15卷 / 03期

关键词：

Pinus elliottii; CCA preservatives; fixing; kinetic modeling training; TEMPERATURE;

D O I：

10.4067/S0718-221X2013005000030

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

This paper analyzes the global chemical kinetics of CCA fixation process in the wood of Pinus elliottii and models the evolution of the process of setting function of time at different combinations of temperature and relative humidity. For this purpose, 2 cm cub specimens were impregnated by a vacuum-pressure process with CCA C solution (2% by mass) and were treated in climatic chamber according to nine combinations of temperature and relative humidity for seven days. The fixing process evaluation was carried out by means of the determination by UV-Vis spectrophotometry, the concentration of Cr (VI) leaching from treated wood sawdust with demineralized water. The main process speed CCA fixation is mainly controlled by the speed of the chemical reactions involved. An equation reliable rate law of the main stage of the process of CCA fixation on wood, which involves climate conditions and exposure time.

引用

页码：391 / 410

页数：20

共 27 条

[1]

AILONG G, 1999, J FORESTRY RES, V10, P141

[2]

American Wood Protection Association. AWPA, 2007, P507 AWPA

[3]

COOPER PA, 1992, FOREST PROD J, V42, P27

[4]

Espenson J. H., 1995, CHEM KINETIC REACTIO

[5]

Glass S. V., 2010, WOOD HDB WOOD ENG MA, P4

[6]

Granville W. A., 2009, CALCULO DIFERENCIAL

[7]

Gu HM, 2005, WOOD FIBER SCI, V37, P699

[8]

Jarl-Gunnar S., 2011, MADERAS-CIENC TECNOL, V13, P153

[9] Reactions between Cr(VI) and wood and its model compounds - Part 1: A qualitative kinetic study of the reduction of hexavalent chromium [J].

Jorge, FS ;

Santos, TM ;

de Jesus, JP ;

Banks, WB .

WOOD SCIENCE AND TECHNOLOGY, 1999, 33 (06) :487-499

[10]

Kaldas M, 1996, FOREST PROD J, V46, P67

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