ProLigno / ProLigno 2008 Numarul 4  
     
 
 
   
 

 

 

 

 

 

 

 

TRATAMENT DE PROTECTIE A CHERESTELEI IN CONTEXTUL DEZVOLTARII DURABILE

Octavia ZELENIUC
Sef lucr.dr.ing.- Universitatea "Transilvania" din Brasov- Facultatea de Industria Lemnului
Adresa: B-dul Eroilor nr.29, 500036 Brasov, Romania
Tel/Fax: 0040 268 415315. E-mail:zoctavia@unitbv.ro

Rezumat:
   Dezvoltarea durabila nu se refera numai la cantitate dar si la calitatea resurselor lemnoase si cherestelei obtinute. Cheresteaua in depozit este susceptibila mucegairii, albastrelii, putrezirii/degradarii. Tratamentul de protectie al cherestelei imediat dupa debitare ar trebui sa constituie o sarcina importanta pentru fiecare fabrica de cherestea care este interesata in obtinerea de produse de calitate si evitarea pierderilor. Sortarea necorespunzatoare, depozitarea in conditii inadecvate fara tratament conduc in final la pierderi anuale de circa 7,35 milioane euro din productia totala de cherestea, in cazul cherestelei de fag.
Lucrarea prezinta avantajele tratamentului de protectie a cherestelei in depozit, modul de evaluare si eficacitatea acestuia in comparatie cu probele netratate.
   Rezultate testelor de laborator nu sunt intotdeauna concludente privind eficacitatea produselor de protectie. In vederea lansarii pe piata a unor produse performante este necesara efectuarea testelor in camp. Cercetarile efectuate au aratat ca dintre produsele testate in camp, numai produsele P1 si P2 si-au mentinut performantele (mai accentuate la concentratii ridicate) prezentand un grad de eficacitate ridicat. Dupa 3 luni de expunere in aer liber, gradul de infestare cu ciuperci al probelor tratate cu aceste produse, a fost sub 0,5, atat pentru molid cat si pentru fag, in comparatie cu probele netratate care au atins gradul 3,5. Stivuirea pe sipci a probelor de fag aburit, a condus la cresterea eficacitatii tratamentului de protectie, obtinandu-se un grad mai mic de infestare, de 0,4, comparativ cu probele pachetizate care au depasit gradul 2 de infestare dupa 2 luni.

Cuvinte cheie: cherestea, protectie, mucegaire, albastrire, eficacitate, dezvoltare durabila.

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Pagina creata de Costel AGACHE. Intretinere pagina Luminita Brenci. Ultima actualizare, 15 Decembrie 2008