Sustainable Valorization of Forestry Byproducts

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Wood Science and Forest Products".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 1803

Special Issue Editors


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Guest Editor
1. ARCP Colab—Rede de Competências em Polímeros, Rua Júlio de Matos, 828/882, 4200-355 Porto, Portugal
2. LEPABE—Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
3. AliCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
Interests: wood-based products; bioadhesives; adhesives; polymers; polyphenols; lignocelulosic byproducts valorization; dyeing; packaging
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
1. Unidad de Desarrollo Tecnológico, Universidad de Concepción, Coronel 4191996, Chile
2. Centro Nacional de Excelencia para la Industria de la Madera (CENAMAD), Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago 7820436, Chile
Interests: chemical Analysis; chemical Processes; agricultural biotechnology phytochemicals; bioactivity; natural product chemistry; mass spectrometry
Special Issues, Collections and Topics in MDPI journals

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Co-Guest Editor
1. Unidad de Desarrollo Tecnológico, Universidad de Concepción, Coronel 4191996, Chile
2. Centro Nacional de Excelencia para la Industria de la Madera (CENAMAD), Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago 7820436, Chile
Interests: wood products; lignin; wood science; wood chemistry; wood anatomy; natural fibers; green technology wood; wood technology; wood composites; delignification; chemical pulping; lignocellulosic conversio

E-Mail Website
Co-Guest Editor
1. ARCP Colab—Rede de Competências em Polímeros, Rua Júlio de Matos, 828/882, 4200-355 Porto, Portugal
2. LEPABE—Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
3. AliCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
Interests: wood-based products; bioadhesives; polymers; biotechnological processes; lignocelulosic byproducts valorization; packaging

Special Issue Information

Dear Colleagues,

The forest is one of the most important treasures of our planet; it has been and continues to be one of the primary sources of resources for all its inhabitants. The forest is one of the pillars of the sustainability of this world, and it is the duty of all of us to take care of it and use its resources responsibly.

Nowadays, forestry and the wood processing industry produce a large number of by-products, the most important of which are bark, sawdust, wood chips, leaves, and branches. Most of these by-products are landfilled, burned, or used for low-value applications.

However, all these by-products are lignocellulosic materials that, from a biorefinery perspective, could be used to obtain products with numerous industrial applications and have been used in leather tanning, as adhesives in the production of wood-based products and corrugated board, in wood panels and surface coatings, in fire retardant and insulating foams, as metal corrosion protectants, as antioxidant additives and organoleptic modifiers in beverages (wine, beer, fruit juices), in food and animal feed, as nutraceuticals and functional foods, as functional additives with applications in the active food packaging industry, and as dyes in the textile industry among others.

The viability and sustainability of the forest industry must be based on the implementation of circular economy processes that include the valorization of all by-products generated in the process, together with responsible forest management.

This Special Issue of Forests aims to collect recent results from field experimental observations and laboratory studies at various sites around the world, as well as related meta-analysis and modeling studies, which would improve the valorization of forestry byproducts.

We invite submissions for a Special Issue of Forests on the subject of “Sustainable Valorization of Forestry Byproducts”. Topics for submissions may include, but are not limited to, the following:

  • Preservation of wood;
  • UV/VIS protection of wood;
  • Antifungal treatment of wood;
  • Paints, coatings, and pigments from or for wood;
  • Modification of forest lignocellulosic forest by-products;
  • Wood extractives and biopolymers;
  • Non-timber wood applications;
  • Forest biorefinery;
  • Fibers from wood and wood by-products;
  • Wood decay resistance;
  • Dimensional stability of wood;
  • Heat treatment of wood.

Dr. Jorge Santos
Dr. Danilo Escobar-Avello
Guest Editors

Dr. Cecilia Fuentealba
Dr. Raquel Fernandes
Co-Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Forests is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • polyphenols
  • tannins
  • lignin
  • cellulose
  • hemicellulose
  • wood extractives
  • wood chemistry
  • biocomposites
  • chemical modification
  • esterification
  • acetylation
  • wood preservation
  • biorefinery
  • wood bark
  • fungal protection
  • biocides
  • UV/VIS
  • FITR
  • mass spectrometry
  • bioadhesive
  • wood treatment
  • particleboards
  • plywood
  • wood-based panels
  • recyclability. photoprotection
  • protective coatings
  • weathering
  • pigments

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Published Papers (3 papers)

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Research

19 pages, 4987 KiB  
Article
Efficient Bio-Based Insulation Panels Produced from Eucalyptus Bark Waste
by Cecilia Fuentealba, César Segovia, Mauricio Pradena-Miquel and Andrés G. César
Forests 2024, 15(9), 1628; https://doi.org/10.3390/f15091628 - 15 Sep 2024
Viewed by 369
Abstract
Traditional thermal insulation panels consume large amounts of energy during production and emits pollutants into the environment. To mitigate this impact, the development of bio-based materials is an attractive alternative. In this context, the characteristics of the Eucalyptus fiber bark (EGFB) make it [...] Read more.
Traditional thermal insulation panels consume large amounts of energy during production and emits pollutants into the environment. To mitigate this impact, the development of bio-based materials is an attractive alternative. In this context, the characteristics of the Eucalyptus fiber bark (EGFB) make it a candidate for insulation applications. However, more knowledge about the manufacturing process and in-service performance is needed. The present study characterized the properties that determine the in-service behavior of the EGFB insulation panel. The assessment involved two different manufacturing processes. The results indicated that the hot plates and the saturated steam injection manufacturing system can produce panels with similar target and bulk density. The thermal conductivity fluctuated between 0.064 and 0.077 W/m·K, which indicated good insulation, and the values obtained for thermal diffusivity (0.10–0.37 m mm2/s) and water vapor permeability (0.032–0.055 m kg/GN s) are comparable with other commercially available panels. To guarantee a good in-service performance, the panels need to be treated with flame retardant and antifungal additive. The good performance of the panel is relevant because bio-based Eucalyptus bark panels generate less CO2 eq and require less energy consumption compared to traditional alternatives, contributing to the sustainability of the forestry and the construction industry. Full article
(This article belongs to the Special Issue Sustainable Valorization of Forestry Byproducts)
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17 pages, 7366 KiB  
Article
A Potential Replacement to Phenol–Formaldehyde-Based Adhesives: A Study of Plywood Panels Manufactured with Bio-Based Wood Protein and Nanolignin Adhesives
by Mario Núñez-Decap, Catherine Friz-Sánchez, Camila Opazo-Carlsson, Boris Moya-Rojas and Marcela Vidal-Vega
Forests 2024, 15(8), 1345; https://doi.org/10.3390/f15081345 - 2 Aug 2024
Viewed by 510
Abstract
Plywood production relies on phenol–formaldehyde (PF), which is why bio-based wood adhesives (BBWAs) were developed as potential replacements, showing promising results in several tests performed. A control sample (PLY-C) with PF and two samples (PLY-1 and PLY-2) with BBWA were manufactured, on which [...] Read more.
Plywood production relies on phenol–formaldehyde (PF), which is why bio-based wood adhesives (BBWAs) were developed as potential replacements, showing promising results in several tests performed. A control sample (PLY-C) with PF and two samples (PLY-1 and PLY-2) with BBWA were manufactured, on which physical and mechanical properties, adhesive bonding morphology, formaldehyde emissions, and accelerated UV aging were evaluated. The adhesive penetration results, into the wood cells, were according to the viscosity of each adhesive. About the mechanical properties, the sample PLY-2 presented the same MOE and tensile strength as the sample PLY-C and reached 87% of the sample PLY-C MOR in the parallel direction. On the other hand, the sample PLY-1 presented the same behavior in the Janka hardness test as the sample PLY-C. All the samples subjected to shear strength tests met the requirement, and the samples PLY-1 and PLY-2 reached 68% and 80% of the PLY-C sample, respectively. The samples manufactured with BBWA presented a decrease in formaldehyde emissions by 88% and they were less susceptible to color change than the control sample under UV aging. According to the results obtained, it is concluded that plywood manufactured with BBWA might be a considerable replacement for plywood manufactured with PF adhesives at a laboratory scale. Full article
(This article belongs to the Special Issue Sustainable Valorization of Forestry Byproducts)
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13 pages, 17600 KiB  
Article
Fast-Curing 3-Layer Particleboards with Lignosulfonate and pMDI Adhesives
by Sofia Gonçalves, Nádia T. Paiva, Jorge Martins, Luísa H. Carvalho and Fernão D. Magalhães
Forests 2024, 15(6), 948; https://doi.org/10.3390/f15060948 - 30 May 2024
Viewed by 470
Abstract
Currently, the industrial success of bio-based adhesives remains limited, despite the growing interest in these compounds. One example is the use of lignosulfonates (LS), a byproduct from the pulp and paper industry, which requires long pressing times to ensure proper performance for wood-based [...] Read more.
Currently, the industrial success of bio-based adhesives remains limited, despite the growing interest in these compounds. One example is the use of lignosulfonates (LS), a byproduct from the pulp and paper industry, which requires long pressing times to ensure proper performance for wood-based panel production. This study successfully manufactured particleboards using a low press factor of 7.5 s/mm, commonly used for conventional urea-formaldehyde resins on a lab scale. To the best of our knowledge, lignin-based particleboards have never been reported using such low press factors. Thus, 3-layer boards were manufactured in which the core layer was bonded with polymeric isocyanate (pMDI), and the surface layers were bonded with LS. Propylene carbonate (PC) was used as a solvent for pMDI to improve adhesive distribution. The optimum amounts of adhesive were determined using response surface methodology: 1.3% pMDI with 2.2% PC in the core layer and 15% LS in the surface layers. These boards obeyed the requirements of standard EN 312 for general-purpose boards for use in dry conditions (type P1). Their formaldehyde content, determined through the perforator method, was equal to that of the wood mix at the maximum value set by IKEA for class E0.5. Full article
(This article belongs to the Special Issue Sustainable Valorization of Forestry Byproducts)
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