Analiza anorganskih onesnažil v proizvodnji lesnih ploščnih kompozitov

Slavec, Tine (author), Lesar, Boštjan (mentor), Medved, Sergej (co-mentor)

V proizvodnji lesnih ploščnih kompozitov se poleg svežega lesa uporabljajo tudi lesni ostanki in odslužen les. V eni od preteklih raziskav so ugotovili, da več kot polovica vzorcev presega mejne vrednosti glede na direktivo o predelavi nenevarnih trdih odpadkov v trda goriva (Ur.l.RS 96//2014), zato smo pri tej diplomski nalogi skušali ugotoviti, v kateri stopnji predelave pride do onesnaževanja. Za raziskavo smo uporabili vzorce iz proizvodnje vlaknenih plošč slovenskega proizvajalca. Vzorce smo odvzeli v štirih časovnih intervalih z dvoletnim zamikom. Pridobili smo vzorce iz različnih faz izdelave plošče in sicer sekance različnih vrst lesa, oblepljena vlakna, neoblepljena vlakna in končno, brušeno in nebrušeno ploščo. Te vzorce smo analizirali z rentgenskim fluorescenčnim spektrometrom-XRF. Rezultate smo primerjali z mejnimi vrednostmi objavljenimi v uredbi o predelavi nenevarnih odpadkov (Ur.l.RS 96//2014) in priporočili EPF (EPF, 2014). Ugotovili smo, da je vstopna surovina zelo kvalitetna in čista. Z večjim onesnaževanjem se prične pri oblepljenih vlaknih, ampak se skozi nadaljno obdelavo onesnaženost zmanjša.

• Language: Slovenian
• Keywords: les, onesnažila, XRF, lesni kompoziti
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [T. Slavec]
• Year: 2018
• PID: 20.500.12556/RUL-103326
• UDC: 630*862
• COBISS.SI-ID: 2942089
• Publication date in RUL: 16.09.2018

Secondary language

• Language: English
• Title: Analysis of inorganic pollutants in the munufacture of wood based composites

Abstract

In production of wood bard composites beside fresh wood also recovered and old wood material can be used. In one of the past researchwe figured out that more than half examples exceeds limit values by directive of processing non-dangerous hard waste (Ur.l.RS 96//2014). In our diploma thesis we tried to determine where in the process pollution happens. For research we used samples from production of fiber boards from Slovenian manufacturer. We took samples in fourth time intervals with two years. Examples were taken from different phases of boards production like chips from different kinds of wood, fibers with and without chemicals and finally grind and non grind boards. We analyzed them with rentgen florescent spectrometer – XRF. To check our results we used directon of processing non – dangerous waste (Ur.l.RS 96//2014) and EPF recomendation (EPF, 2014). Results show that incoming raw material is high quality and clean. More pollution starts with chemical fibers but after further processing pollution starts to decrease.

• Keywords: wood, pollutants, XRF, wood composites