Biodegradation of terpenes for emission-reduced oriented strand boards (OSB)
-
Bernhard Widhalm
,
Cornelia Rieder-Gradinger
Abstract
A bacterial mixture of Pseudomonas putida and Pseudomonas fluorescens has recently shown the potential to completely reduce monoterpenes within pine wood particles on a laboratory scale. This bacterial combination was then applied onto pine wood strands to obtain emission-reduced oriented strand boards (OSB) produced on a technical scale. Laboratory tests with bacterial inoculated strands were carried out to optimise parameters such as aeration and incubation time. Residual terpene emissions were measured by solid-phase microextraction/ gas chromatography-mass spectrometry (SPME/GC-MS) analysis. Daily aeration, specific pre-cultivation, and increased inoculum size eventually resulted in a reduction of the major softwood terpenes α-pinene, β-pinene, and Δ3-carene by 60, 70, and 40%, respectively, after only 2 days of incubation. Based on these results, OSB were manufactured from strands after bacterial pre-treatment for 2 or 4 days. As expected, terpene emissions from OSB decreased with increasing incubation time. However, even after only 2 days of incubation, α-pinene and β-pinene emissions were appreciably reduced by 40 and 70%, respectively. The method developed here thus appears to be feasible for industrial application although a further reduction of pre-treatment time would be advantageous. The inoculation step will also have to be adapted for technical implementation into the OSB production process.
Acknowledgments
We thank the Austrian government and the federal governments of Upper Austria, Lower Austria, and Carinthia for funding the Competence Centre of Wood Composites and Wood Chemistry.
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Comparative analysis of the complete chloroplast genomic sequence and chemical components of Cinnamomum micranthum and Cinnamomum kanehirae
- Characterisation of lignin and lignin-carbohydrate complexes (LCCs) in prehydrolysed wood chips
- Promotion effect of NP fire retardant pre-treatment on heat-treated poplar wood. Part 1: color generation, dimensional stability, and fire retardancy
- Promotion effect of NP fire retardant pre-treatment on heat-treated poplar wood. Part 2: hygroscopicity, leaching resistance, and thermal stability
- Coating of wood by means of electrospun nanofibers based on PVA/SiO2 and its hydrophobization with octadecyltrichlorosilane (OTS)
- Characteristics and thermal decomposition kinetics of wood-SiO2 composites derived by the sol-gel process
- Premature failure of utility poles in Switzerland and Germany related to wood decay basidiomycetes
- Tannin-boron complex as a preservative for 3-ply beech plywoods designed for humid conditions
- Biodegradation of terpenes for emission-reduced oriented strand boards (OSB)
- Mathematical models and experimental data for HDF based sandwich panels with dual corrugated lightweight core
Artikel in diesem Heft
- Frontmatter
- Comparative analysis of the complete chloroplast genomic sequence and chemical components of Cinnamomum micranthum and Cinnamomum kanehirae
- Characterisation of lignin and lignin-carbohydrate complexes (LCCs) in prehydrolysed wood chips
- Promotion effect of NP fire retardant pre-treatment on heat-treated poplar wood. Part 1: color generation, dimensional stability, and fire retardancy
- Promotion effect of NP fire retardant pre-treatment on heat-treated poplar wood. Part 2: hygroscopicity, leaching resistance, and thermal stability
- Coating of wood by means of electrospun nanofibers based on PVA/SiO2 and its hydrophobization with octadecyltrichlorosilane (OTS)
- Characteristics and thermal decomposition kinetics of wood-SiO2 composites derived by the sol-gel process
- Premature failure of utility poles in Switzerland and Germany related to wood decay basidiomycetes
- Tannin-boron complex as a preservative for 3-ply beech plywoods designed for humid conditions
- Biodegradation of terpenes for emission-reduced oriented strand boards (OSB)
- Mathematical models and experimental data for HDF based sandwich panels with dual corrugated lightweight core
