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The kinetics of the thermal decomposition of the willow wood (Salix viminalis L.) exposed to the torrefaction process

100%

Walkowiak M., Bartkowiak M.

Drewno. Prace Naukowe. Doniesienia. Komunikaty

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2012

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tom 55

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nr 187

The aim of the study was to analyze the kinetic parameters (activation energy Ea, pre-exponential coefficient A, rate constant k) of thermolysis in torrefied and raw willow wood (Salix viminalis L.), as well as to determine the effect of thermal modification conditions on the kinetics of this process. Samples of raw and torrefied willow wood in a steam atmosphere were analysed. The samples were subjected to thermogravimetric analysis under isothermal conditions. Analyses were conducted in an atmosphere of helium at 270–330°C. TG and DTG curves were recorded. The thermal characteristics of the samples were based on thermogravimetric analysis under dynamic conditions at a temperature of up to 600°C. On the basis of the data obtained from the TGA analyses, the kinetic parameters were calculated and statistical and mathematical analyses of the results were performed.

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Chemical composition of lignocellulose materials and porous structure of activated carbons

80%

Babel K., Janasik D., Waliszewska B., Pradzynski B.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2012

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tom 77

Chemical composition of lignocellulose materials and porous structure of activated carbons. Chemical and elemental compositions of selected lignocellulose materials were determined and next a series of activated carbons was produced from these materials under strictly repeatable conditions. The chemical activation method (900oC) using KOH (4:1) was applied for the development of the porous structure. Prior to activation all raw materials were subjected to pyrolysis at 700oC using a slight temperature increase rate (3oC/min). Produced activated carbons had varied porous structure parameters and considerable BET surface areas ranging from 2026 to 2884 m2/g. It was shown that the type of the applied precursor has a significant effect on the development of the porous structure.

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An analysis of thermal decomposition in oxidative conditions of model wood-based materials glued with amino resin

80%

Cichy W., Bartkowiak M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2012

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tom 77

An analysis of thermal decomposition in oxidative conditions of model wood-based materials glued with amino resin. The presented work includes the results of thermal analysis of model samples of particleboards glued with urea-formaldehyde resin with varying degree of sealing (5 ÷ 30%), which is a measurable factor changing the elemental nitrogen content in the samples. Changes of the kinetic parameters of the thermo-destruction reactions occurring in the air were observed as well.

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Wstępne badania nad toksycznością płyt z ekspandowanego polichlorku winylu

70%

Kalinowska R., Sluzewska L.

Roczniki Państwowego Zakładu Higieny

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1959

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tom 10

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nr 2

Ograniczanie wyników

2 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

1 Drewno. Prace Naukowe. Doniesienia. Komunikaty

1 Roczniki Państwowego Zakładu Higieny

2 Bartkowiak M.

1 Babel K.

1 Cichy W.

1 Janasik D.

1 Kalinowska R.

1 Pradzynski B.

1 Sluzewska L.

1 Waliszewska B.

1 Walkowiak M.

3 2012

1 1959

The kinetics of the thermal decomposition of the willow wood (Salix viminalis L.) exposed to the torrefaction process

Chemical composition of lignocellulose materials and porous structure of activated carbons

An analysis of thermal decomposition in oxidative conditions of model wood-based materials glued with amino resin

Wstępne badania nad toksycznością płyt z ekspandowanego polichlorku winylu