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Chemical composition of lignocellulose materials and porous structure of activated carbons

100%

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

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

2012

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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Wood decay fungi associated with Tamarind Tree in Gujarat, India

100%

Nnagadesi P. K., Arya A.

International Letters of Natural Sciences

2015

tom 46

Fungi may cause internal decay, cankers, loosening of tissue and cell walls result into weak forks in the trunk and large branches. Tree rot may be associated with root decay, damage to foliage and fruits. Wood decay fungi isolated from Tamarindus indica were Daldinia concentrica, Schizophyllum commune, Flavodon flavus, Irpex hydnoides, and Phellinus fastuosus, in which D. concentrica causing canker rot is reported for the first time from India and F. flavus and I. hydnoides P. fastuosus are recorded for the first time on T. indica wood causing white rot. During canker rot, formation of bark canker and extensive internal decay of wood was observed; as a result the tree growing in the M.S. University campus became structurally unstable and broken off at the canker face. Early detection and removal of such hazardous branches of trees is advocated to avoid loss of life and property.

Ograniczanie wyników

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

1 International Letters of Natural Sciences

1 Arya A.

1 Babel K.

1 Janasik D.

1 Nnagadesi P. K.

1 Pradzynski B.

1 Waliszewska B.

1 2015

1 2012

Wyniki wyszukiwania

Chemical composition of lignocellulose materials and porous structure of activated carbons

Wood decay fungi associated with Tamarind Tree in Gujarat, India