Evaluation of formaldehyde emission of medium density fiberboard made from with eco-friendly stabilizers and residue fibers of licorice root

Document Type : Research Paper

Authors

1 Department of Wood and Paper Industries, Faculty of Natural Resources, University of Zabol, Zabol Iran.

2 Department of Environmental Sciences, Faculty of Natural Resources, University of Zabol, Zabol, Iran.

10.22059/jfwp.2023.361128.1256

Abstract

The emission of volatile organic compounds, including formaldehyde, is one of the important and well-known disadvantages of wooden products. The aim of this study is to measure the amount of formaldehyde gas released from medium density fiber board and reduce its emission by adding a mixture of fibers and stabilizers. For this purpose, medium density fiber boards were made from the extracted residue of licorice root and two types of stabilizers. Then, using the desiccator method, the amount of formaldehyde gas released from each sample was calculated in micrograms of formaldehyde per milliliter of solution. The obtained results show that in the treatment where the mixing ratio of industrial fibers to licorice root residue fibers is 70 to 30 and urea formaldehyde glue is modified with traditional stabilizers (alum, tragacanth gum and walnut leaf extract), the lowest formaldehyde emission is measured. Also, the control treatment (100% industrial fibers and pure urea-formaldehyde glue) has the highest formaldehyde emissions. Therefore, if the waste fibers of the licorice root are combined with factory fibers and the urea formaldehyde glue is modified with traditional stabilizers of the first type (oak fruit extract, Copper sulfate, zedo gum) and the second type (walnut leaf extract, alum, tragacanth gum), the amount Formaldehyde gas emissions are reduced by more than 50%. As a result, modified treatment with traditional stabilizers is considered the most optimal type of treatment to reduce formaldehyde emission.

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Main Subjects


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