Fungicidne lastnosti 50 let starega odpadnega zaščitenega lesa

Miha Humar (Author), Franc Pohleven (Author)

Abstract

Količine odpadnega zaščitenega lesa se bodo v bližnji prihodnosti zelo povečale. Zaradi visoke vsebnosti biocidov, prosto odlaganje in sežiganje odpadnega zaščitenega lesa ni dovoljeno. Zato smo proučili možnosti ponovne uporabe odpadnega, s CCA pripravki zaščitenega lesa. Z rentgensko fluorescenčno spektroskopijo (XRF) smo določili, da je v drogu po 50 letih izpostavitve ostalo še veliko kromovih in arzenovih spojin, večina bakrovih soli pa se je iz lesa izprala. Laboratorijsko izpiranje je pokazalo, da se preostali biocidi iz lesa bistveno več ne izpirajo. Z uporabo mini blok metode pa smo potrdili, da je preiskovani del droga tudi po dolgih letih uporabe še vedno odporen proti glivam rjave trohnobe in bi ga bilo možno ponovno uporabiti.

Keywords

odpadni les;CCA;izpiranje;ponovna uporaba;lesne glive;

Data

Language:	Slovenian
Year of publishing:	2004
Typology:	1.01 - Original Scientific Article
Organization:	UL BF - Biotechnical Faculty
Publisher:	Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije
UDC:	630*844
COBISS:	1237385
ISSN:	0024-1067
Parent publication:	Les
Views:	747
Downloads:	181
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Fungicidal properties of 50 years old waste impregnated wood
Secondary abstract:	Amounts of waste impregnated wood will increase significantly in the future years. Ordinary burning and land fielding is not allowed due to high biocide contents. Possibility of reuse of waste CCA treated wood was elucidated herein. Using method of X-ray fluorescence spectroscopy (XRF) was confirmed, that the major part of the Cr and As compounds remained in the 50 years old CCA treated timber, on the other hand, the major part of copper salts leached from wood. Laboratory leaching confirmed that after such extensive period, the mayor part of biocides remained fixed and did not leach from wood. In addition, mini block method proved that CCA treated wood, that was in use for 50 years, is still resistant against brown rot fungi and we could reuse it.
Secondary keywords:	waste wood;leaching;reuse;wood decay fungi;
URN:	URN:NBN:SI
Type (COBISS):	Not categorized
Pages:	str. 317-320
Volume:	ǂLet. ǂ56
Issue:	ǂšt. ǂ10
Chronology:	2004
ID:	1744068