Burapha University International Conference, BUU-2014

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Physicochemical properties of pyroligneous acid from carbonization of five wood species
Yongyuth theapparat

Last modified: 2014-06-03

Abstract


Pyroligneous acid from carbonization of five wood species:  Eucalyptus camaldulensis, Leucaena leucocephala, Azadirachta indica, Hevea brasiliensis (rubber wood) and Dendrocalamus asper (bamboo) along with two commercial products were characterized their physicochemical properties and compared those properties with The Japan Pyroligneous Liquor Association standards. Pyroligneous acid from different wood and source has variable properties. The colours have visually a pale, yellow and bright brown with a smoke-like odour. All pyroligneous acids, pH and total soluble tar content were in acceptance creteria of the international standard qualification. Specific gravity of only two products from rubber wood (H. brasiliensis) and bamboo (D. asper) were in the acceptance criteria. Water content in L. leucocephala, H. brasiliensis and D. asper along with commercial product were in the acceptance criteria of the international standard qualification. However amount of water in E. camaldulensis and A. indica were slightly higher than the standard. Their chemical compositions were performed qualitatively by GC/MS and quantitatively by GC/FID. Twenty-three components were identified, of which the acetic acid was the major component followed by 2-methoxy-4-propylphenol and 2-methylphenol.

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