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Vpliv hranil na preraščanje lesnih vzorcev z glivami rjave trohnobe : diplomsko delo (univerzitetni študij)
Karabegović, Petra (Author), Humar, Miha (Mentor) More about this mentor... This link opens in a new window, Pohleven, Franc (Reviewer)

URLURL - Presentation file, Visit http://www.digitalna-knjiznica.bf.uni-lj.si/dn_karabegovic_petra.pdf This link opens in a new window

Abstract
V svetu predstavlja odslužen zaščiteni les zaradi stroge okoljske zakonodaje vse večji problem. Sežig ali odlaganje odpadnega zaščitenega lesa nista sprejemljivi rešitvi. Veliko obetavnejša je mikoremediacija odpadnega zaščitenega lesa z na baker tolerantnimi sevi lesnih gliv. Da bi raziskali preraščanje zaščitenega lesa, smo uporabili dva tolerantna (Antrodia vaillantii in Leucogyrophana pinastri) in dva na baker občutljiva (Poria monticola in Gleophyllum trabeum ) seva gliv rjave trohnobe. Vzorce smo izdelali iz smrekovine (Picea abies), polovico smo jih impregnirali s 5 % raztopino CCB, drugo pa pustili nezaščiteno. Vzorce smo izpostavili glivam v skladu s standardom SIST EN 113 in s spremljanjem respiracije ocenili preraščenost vzorcev. Najprej smo proučevali v kolikšnem času lesne glive prerastejo smrekove vzorce, zatem pa kontrolne in zaščitene vzorce omočili še v različna hranila (glukoza in/ali koruzna omakalna vodica) ter ugotavljali vpliv le-teh na rast gliv. Rezultati so pokazali, da tolerantni sevi hitreje preraščajo zaščitene vzorce kot netolerantni. Omakanje v hranila v večini primerov pospeši razkroj impregniranega lesa, kar dokazujejo meritve CO2 in izgube mase.

Language:Slovenian
Keywords:respiracija, toleranca na baker, CCB, bioremediacija, odpadni zaščiten les, zaščitna sredstva, glive razkrojevalke
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2006
Publisher:[P. Karabegović]
Number of pages:IX, 43 f.
Place:Ljubljana
UDC:630*844.2
COBISS.SI-ID:1400713 Link is opened in a new window
Views:591
Downloads:192
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Secondary language

Language:English
Abstract:
In the world, there is an increasing problem regarding impregnated wood wastes, due to severe environmental legislation. Combustion and landfilling are not acceptable solutions for this issue at all. Mycoremediation of impregnated wood wastes, using copper tolerant wood decay fungi, is one of the most promissing solutions. In order to elucidate fungal overgrowth of impregnated wood, two copper tolerant (Antrodia vaillantii and Leucogyrophana pinastri) and two copper sensitive (Poria monticola and Gloeophyllum trabeum) brown rot fungal strains were used. Samples were made from Norway spruce (Picea abies); one of them was impregnated with 5 % CCB solution, the other half was not. According to the EN 113 procedure the specimens were exposed to wood decay fungi. After the exposure they were isolated and fungal overgrowth was estimated via respiration measurements. Influence of time exposure on fungal overgrowth was investigated first, then control wood samples and the impregnated ones were immersed into nutrient solution (glucose and/or corn steep liquor), and afterwards the influence of nutrients on fungal growth was analyzed. The results show that tolerant fungal strains colonize CCB impregnated wood faster than the sensitive ones. By measurments of CO2 and of mass losses it was proved that immersing of the samples in general improve the fungal growth.

Keywords:respiration, copper tolerance, CCB, bioremdiation, treated wood waste, preservatives, wood decay fungi

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