magistrsko delo
Ives Hudobivnik (Author), Matevž Pompe (Mentor), Iztok Turel (Thesis defence commission member), Mitja Kolar (Thesis defence commission member)

Abstract

Kurjenje lesa je v zadnjem obdobju glavni vir trdnih delcev (PM) in pomemben vir plinastih izpustov. V okviru magistrskega dela sem se osredotočila na izpuste, ki nastanejo pri gorenju različnih vrst lesne biomase in pri uporabi različnih tipov peči. Za primerjavo je bil uporabljen trd les bukve in mehek les bora, hkrati z različnimi tipi kurilnih naprav (kamin, stara peč, nova peč). Ob tem sem opazovala tudi posamezne faze izgorevanja lesa (izpusti, ki nastanejo v začetni fazi, tj. ogrevanju peči, in v fazi delovne temperature, ko je kurišče že predhodno pripravljeno). Na vzorčenih filtrih sem z uporabo ionske kromatografije določala kalij in levoglukozan. Policiklične aromatske ogljikovodike sem določala z uporabo GC/MSD, vodotopni organski ogljik pa s TOC analizatorjem. S pomočjo termične analize z optično korekcijo sem na vzorčenih filtrih določevala tudi vsebnost ogljika (organski, elementni ter celotni). Na podlagi meritev je bilo ugotovljeno, da je korelacija med delci in levoglukozanom visoka (92-%), kar pomeni, da na podlagi ravni levoglukozana lahko določimo prispevek lesne biomase k onesnaženosti zunanjega zraka z delci. Pretvorbeni faktor na količino delcev, ki ga preverjamo v meritvah levoglukozana, znaša 9,8 za les bukve in 4,5 za les bora. Izmed policikličnih aromatskih ogljikovodikov najbolj prevladuje benzo[b,j,k]fluoranten z 0,1-% deležem, sledi pa mu benzo[a]piren.

Keywords

lesna biomasa;levoglukozan;kalij;policiklični aromatski ogljikovodiki;ogljik;kurjenje biomase;analizne metode;magistrska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [I. Hudobivnik]
UDC: 543:630*83(043.2)
COBISS: 20878595 Link will open in a new window
Views: 678
Downloads: 168
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Other data

Secondary language: English
Secondary title: Determination of compounds specific for wood biomass combustion
Secondary abstract: Wood biomass combustion has recently been recognised as a major source of particulate matter (PM) and an important source of gaseous emissions. In my master's thesis, I focused on emissions from combustion of different types of wood biomass and use of different types of furnaces. Beech hardwood, pine softwood and different types of combustion devices (fireplace, old stove, new stove) were used for comparison. Additionaly, individual stages of wood burning (emissions that occur at the initial phase, i.e. the heating of the furnace and at phase of working temperature, with pre-prepared firebox) were investigated. On sampled filters potassium and levoglucosane were determined using ion chromatography. Polycyclic aromatic hydrocarbons were determined using GC/MSD, water-soluble organic carbon by using a TOC analyzer and carbon (organic, elemental and total) with thermal analysis with optical correction. Based on the measurements, I can conclude that the correlation between the particles and levoglucosan is high (92%). Therefore, levels of levoglucosan can be used for estimation of the source of biomass burning to particulate matter pollution. In accordance with measuments of levoglucosan and particulate matter, the conversion factor between levoglucosan and PM was deduced. It is 9.8 for beech wood and 4.5 for pine wood. Between polycyclic aromatic hydrocarbons, benzo[b, j, k]fluoranthene (0,1-%) is most prevalent, followed by benzo[a]pyrene.
Secondary keywords: levoglucosan;potassium;polycyclic aromatic hydrocarbons;carbon;biomass combustion;
Type (COBISS): Master's thesis/paper
Study programme: 1000375
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, smer Kemija
Pages: 75 f.
ID: 11852111