Fungal pretreatment of pine wood to reduce the emission of volatile organic compounds

Stratev, Daniel; Gradinger, Cornelia; Ters, Thomas; Fackler, Karin; Kuncinger, Thomas; Srebotnik, Ewald

doi:10.1515/hf.2011.078

Cited by 6 publications

(7 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Precise measurement of VOC emissions is relevant, not only in the context of traditional technological processes (Barry and Corneau 1999 ;Englund and Nussbaum 2000 ;Banerjee 2001 ;Wiglusz et al 2002 ;Bengtsson and Sanati 2004 ;Radhakrishnan and Banerjee 2004 ;Makowski and Ohlmeyer 2006a,b ;Ayrilmis and Kaymakci 2012 ), but also for the monitoring of wood decay (Bruce et al 2000(Bruce et al , 2004Humphris et al 2001 ;Stratev et al 2011 ). VOCs released by wood products, including AA, are frequently analyzed by means of thermal desorption coupled with gas chromatography-mass spectrometry (TD-GC-MS), see ISO 16000 part 6.…”

Section: Introductionmentioning

confidence: 99%

Effects of climatic test parameters on acetic acid emission from beech (Fagus sylvatica L.)

2012

View full text Add to dashboard Cite

Acetic acid (AA) emission from beech samples was studied in test chambers operated according to ISO 16000 part 9 and as a function of temperature and relative humidity (RH). The impact of RH was higher than that of temperature. AA emission was about 45 % higher at 75 % RH than under standard parameters (50 % RH, 23 ° C). Probably, RH infl uences AA emission both by enhanced hydrolysis of acetyl groups, as well as by facilitating the release of AA into the surrounding air by diffusion. The concentration of AA in test chamber air was determined with thermal desorption-gas chromatographymass spectrometry (TD-GC-MS) as well as with ion chromatography (IC). Both techniques provided similar results. The values measured by IC ranged constantly 15 % below those obtained with TD-GC-MS. This can be ascribed to losses during sampling of test chamber air.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of climatic test parameters on acetic acid emission from beech (Fagus sylvatica L.)

2012

View full text Add to dashboard Cite

show abstract

“…The MC of the dried material was 4.0% (untreated strands), 5.2% (site I), and 4.8% (site II). Laboratory boards were produced according to Stratev et al (2011). Pressing parameters: press factor, 10.8 s mm -1 ; average temperature, 193°C; and 150 bar.…”

Section: Laboratory Boards' Productionmentioning

confidence: 99%

“…Testing parameters and test protocol are described by Stratev et al (2011). The area-specific air exchange rate was 0.5 m 3 h -1 m -2 .…”

Section: Microchamber Testingmentioning

confidence: 99%

“…Certain wood-inhabiting organisms such as fungi (Dorado et al 2000(Dorado et al , 2001Stratev et al 2011) and bacteria (Burnes et al 2000;Kallioinen et al 2003) are well known for their capability to metabolise wood extractives such as fatty acids without affecting the mechanical properties of wood (Fengel and Wegener 2003). This approach has already been applied to solve pitch problems in the pulp and paper industry (Farrell et al 1993(Farrell et al , 1997Schirp et al 2003), in the course of which wooden raw materials is pretreated with the ascomycete Ophiostoma piliferum.…”

Section: Introductionmentioning

confidence: 99%

“…This approach has already been applied to solve pitch problems in the pulp and paper industry (Farrell et al 1993(Farrell et al , 1997Schirp et al 2003), in the course of which wooden raw materials is pretreated with the ascomycete Ophiostoma piliferum. On a laboratory scale, the same fungus was able to reduce aldehyde emissions of wood composites by degrading their precursors such as fatty acids (Stratev et al 2011).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Industrial waste water for biotechnological reduction of aldehyde emissions from wood products

Stratev¹,

Günther

Steindl

et al. 2014

Holzforschung

Self Cite

View full text Add to dashboard Cite

Pine wood particles were treated with effluents from the wood-board manufacturing industry or from a communal clarification plant, and the effect of these treatments on aldehyde emissions of wood material was tested. Pine wood strands were treated in the same manner and strand boards were produced from the treated material on a laboratory scale. The 28-day volatile organic compound emissions of the boards were determined in a microchamber using Tenax-TDAS/GC-MS analytics. Boards made from treated strands exhibited significantly lower aldehyde emissions compared to control boards. Analyses of microflora and of wood extractives confirmed that microbial metabolism in industrial effluents consumed unsaturated fatty acids (UFAs) present in wood. As UFAs are the source of aldehyde emissions due to auto-oxidation, the aldehyde emission was consequently reduced. A routine treatment of wood raw material with properly chosen industrial effluents may therefore be regarded as a costreducing and efficient method for the utilisation of industrial waste waters.

show abstract

Water up-take in fuel pellets studied by Dynamic Vapour Sorption (DVS) analysis and its potential role in self-heating during storage

et al. 2018

View full text Add to dashboard Cite

The self-heating of wood fuel pellets is a well-recognised problem causing fire incidents in the storage of the pellets as well as severe intoxication of workers by elevated carbon monoxide and carbon dioxide levels and oxygen depletion. Possible factors contributing to the self-heating are considered to be autoxidation and microbiological activity, while the role and contribution to the temperature rise caused by the heat of condensation from water vapour condensing during fast changes in the relative air humidity is less investigated. Using Dynamic Vapour Sorption, the water uptake was measured at 25 °C when increasing the RH from 40 to 80% using 35 fuel pellet samples covering a broad variation in pellet raw materials and process equipment found in Europe (both pilot and industrial scale). The equilibrium total water uptake and speed of the uptake were determined. Total water uptake was 4.56% (range 3.69-6.86%) with no systematic difference found related to the scale of production (industry as compared to pilot plant). In addition, the variations within larger groups of raw material (pine, spruce and pine/spruce mixtures) were relatively small, and the mean water uptake did not differ significantly between these groups. An estimation of the overall potential heat release (when raising the RH% from 40 to 80%) made from the experimental results, taking the early fast water uptake process into consideration (2 h counting for half the total uptake), showed that a heat release of 47 kJ/kg of pellets (range 12-63 kJ/kg) and a potential temperature increase of 45 °C is possible. This estimation clearly demonstrates that the heat of condensation released during water condensation in a pellets silo or in a pellets pile should be expected to be a major contributing factor to initiating temperature rise incidents. In addition, such a temperature increase is expected to assist the initiation of, and to increase the speed of autoxidation of fatty acids and other compounds in the material that will further contribute to a temperature rise. Thus, the results in this study have the potential to improve the basis for modelling the self-heating process in pellet silos/storage and to predict the status of a certain pellet batch by presenting a broad basis for expected variation in the important parameters (specific heat capacity C P and thermal conductivity λ eff) influencing the process, and thus aid in taking preventive actions like venting or shifting the pellets to another silo/pile to reduce risk for self-heating and possible fire.

show abstract

Fungal pretreatment of pine wood to reduce the emission of volatile organic compounds

Cited by 6 publications

References 10 publications

Effects of climatic test parameters on acetic acid emission from beech (Fagus sylvatica L.)

Effects of climatic test parameters on acetic acid emission from beech (Fagus sylvatica L.)

Industrial waste water for biotechnological reduction of aldehyde emissions from wood products

Water up-take in fuel pellets studied by Dynamic Vapour Sorption (DVS) analysis and its potential role in self-heating during storage

Contact Info

Product

Resources

About