PYROLIGNEOUS LIQUOR PRODUCED FROM<i>Acacia mearnsii</i>DE WILD WOOD UNDER CONTROLLED CONDITIONS AS A RENEWABLE SOURCE OF CHEMICALS

Furtado, Carolina Mesquita; Stolz, Aline dos Santos; Pinto, Fernanda Lerner; Moura, Ângela Beatrice Dewes; Morisso, Fernando Dal Pont; Pitarelo, Ana Paula; Ramos, Luiz Pereira; Mühlen, Carin von; Riegel‐Vidotti, Izabel C.

doi:10.5935/0100-4042.20150120

Cited by 9 publications

(11 citation statements)

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“…An important environmental problem occurs during the transformation of wood into coal, where greenhouse gases are generated, causing a negative social and environmental impact (Pereira et al 2017). In the southern part of Brazil, the production of charcoal is an important activity for families of small farmers and thousands of charcoal kilns are spread over more than 10,000 small properties (Daroit et al 2013;Furtado et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan: physicochemical properties of the solution and films

Porto

Campos

Garcia

2018

Environ Sci Pollut Res

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The pyroligneous liquor is a product obtained during the production of charcoal, with well-known antimicrobial activity. In this work, we characterized the physical chemistry properties of a formulation composed of distilled pyroligneous liquor (DPL), obtained from Eucalyptus grandis, and chitosan. A good interaction between the polymer and the solvent was observed. Auto-supported films were prepared with these systems and characterized with respect to their structure and photo-protection properties, water vapor permeability, and resistance to water and to thermal degradation. They present a semi-crystalline structure and are hygroscopic, but are stable under immersion for up to 7 days. The swelling degree in water is 300% in weight and the permeability to water vapor was between 30 and 45 g m −1 h −1 (for films with 80 to 10 μm, respectively). The obtained films are able to efficiently block the incident UVB and UVC radiation; the molar absorptivity decreases exponentially with increasing wavelength and is stable up to 300°C. These properties confer desirable properties to the films, obtained from these precursors of a renewable source, to be used as coatings.

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Section: Introductionmentioning

confidence: 99%

Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan: physicochemical properties of the solution and films

Porto

Campos

Garcia

2018

Environ Sci Pollut Res

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“…The liquor had reddish brown color, was translucent and had a strong smoky odor. The composition of pyroligneous liquor used in this study was determined by Furtado et al [20]. The liquor was diluted in 25% v/v and 50% v/v with deionized water.…”

Section: Anodizing Electolytesmentioning

confidence: 99%

“…It is known that the pyroligneous liquor has acetic acid in its composition, which explains their similar behavior. For the GC/MS characterization of the pyroligneous extracts, a dilution step was necessary prior to the chromatographic analysis due to the presence of a significant amount of acetic acid and other organic acids, which could potentially damage the chromatographic column [20].…”

Section: Potential Transientsmentioning

confidence: 99%

“…This can be explained by crystallization that occurs with aging, which in turn is associated with the oxygen evolution reaction (OER). The organic compounds present in the pyroligneous liquor, such as phenols, hemicellulose and aldehydes [20], may be acting as inhibitors of this process, since organic compounds are normally related as having this characteristic [52,53]. They act by blocking the surface of the electrodes (mainly the cathode) by adsorbing their molecules on the metal surface [52,54], which would act to prevent OER.…”

Section: Analysis Of the Superficial Topography Through Semmentioning

confidence: 99%

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Colored anodizing of titanium with pyroligneous solutions of black wattle

et al. 2020

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In many places, charcoal production, using Australian Blackwood, is still a rudimentary process, generating huge environmental impact, due to the release of pyrolysis smoke into the atmosphere. Both the society and governmental agencies is pushing the factories to condense the smoke, generating byproduct known as pyroligneous liquor. Although it's largely used for agricultural purpose, as a fertilizer and phytosanitizer, its chemical composition presents hydrogen and oxygen rich compounds, making it a potential electrolyte in the surface treatment industry, especially for anodization. Organic alternatives are being used to replace these electrolytes to make the anodizing process cleaner. Then, for the first time, Australian Blackwood pyroligneous liquor was used as an anodizing electrolyte for titanium TICP-G2, to obtain oxides for protection and coloring of the metal. For such, suitable parameters to execute the process were determined (dilution, current density, temperature, agitation, pH, conductivity) and an analysis of the transient potential over time was made. The anodized surfaces were characterized using top view Scan Electronic Microscopy (SEM) and Grazing Incidence X-ray Diffraction (GIXRD). Based on the results presented, it can be concluded that the best parameters to anodize the titanium were obtained with 50% pyroligneous liquor diluted in water, obtaining colored surfaces and promoting the formation of oxide crystallites clusters mainly in longer process times (3600s).

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“…Furtado et al [155] studied the composition of the pyrolysis liquor of A. mearnsii wood, in pyrolysis trials carried out in similar conditions to those used in the charcoal production. This liquor is usually released to the atmosphere in the traditional brick ovens, but its condensation can be easily performed, minimizing the amount of gas liberated and making possible the valorization of the condensables, along with the charcoal.…”

Section: Combustion and Pyrolysismentioning

confidence: 99%

Insights for the Valorization of Biomass from Portuguese Invasive Acacia spp. in a Biorefinery Perspective

Correia

Quintela²,

Duarte

et al. 2020

Forests

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Acacia spp. are widespread all over the Portuguese territory, representing a threat to local biodiversity and to the productivity of the forest sector. The measures adopted in some countries for their eradication or to control their propagation are expensive, have been considered unfeasible from practical and economical perspectives, and have generated large amounts of residue that must be valorized in a sustainable way. This review brings together information on the valorization of bark, wood, leaves, flowers, pods, seeds, roots, and exudates from Acacia spp., through the production of high-value bioactive extracts (e.g., antioxidant, antimicrobial, anti-inflammatory, antidiabetic, antiviral, anthelmintic, or pesticidal agents, suitable to be explored by pharmaceutical, nutraceutical, cosmetics, and food and feed industries), its incorporation in innovative materials (e.g., polymers and composites, nanomaterials, low-cost adsorbents), as well as through the application of advanced thermochemical processes (e.g., flash pyrolysis) and pre-treatments to decompose biomass in its structural components, regarding the production of biofuels along with valuable chemicals derived from cellulose, hemicellulose, and lignin. The knowledge of this research is important to encourage an efficient and sustainable valorization of Acacia spp. within a biorefinery concept, which can bring a significant economic return from the valorization of these residues, simultaneously contributing to forest cleaning and management, to reduce the risk of fires, and to improve the social-economic development of rural areas.

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PYROLIGNEOUS LIQUOR PRODUCED FROMAcacia mearnsiiDE WILD WOOD UNDER CONTROLLED CONDITIONS AS A RENEWABLE SOURCE OF CHEMICALS

Cited by 9 publications

References 0 publications

Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan: physicochemical properties of the solution and films

Distilled pyroligneous liquor obtained from Eucalyptus grandis and chitosan: physicochemical properties of the solution and films

Colored anodizing of titanium with pyroligneous solutions of black wattle

Insights for the Valorization of Biomass from Portuguese Invasive Acacia spp. in a Biorefinery Perspective

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