NIR and anatomy of wood and charcoal from Moraceae and Euphorbiaceae species

Nisgoski, Silvana; Muñiz, Graciela Inés Bolzón de; Morrone, Simone Ribeiro; Schardosin, Felipe Zatt; França, Ramiro Faria

doi:10.12953/2177-6830/rcm.v6n3p183-190

Cited by 20 publications

(21 citation statements)

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“…Results related to changes in ray height are associated with species characteristics, as also reported by Nisgoski et al [28] for Ocotea porosa in carbonization programs with final temperature varying from 350 to 650 °C, and in carbonization process with temperature of 450 °C by Nisgoski et al [32] and Stange et al [31]. In other Mozambican species, in the same carbonization parameters of this study, Nisgoski et al [18] described decrease in ray height in Sterculia quinqueloba from 60 to 37% (P2-P4) and in other species verified increase in P1 and decrease in P2.…”

Section: Rayssupporting

confidence: 73%

“…The main component that acts in the formation of charcoal is lignin, since it is technically more stable than the carbohydrates of wood. The literature reports, in some carbonization procedures with temperature of 450 °C, an increase in ray frequency, decrease and no statistical changes [16,31,32]. In the same carbonization parameters of this study, Nisgoski et al [18] related increase of 88% (Sterculia quinqueloba-P2) and a reduction of 16% (Bobgunnia madagascariensis-P1) in ray frequency.…”

Section: Rayssupporting

confidence: 52%

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Charcoal anatomy and NIR spectra of Spirostachys africana, Terminalia sp. and Colophospermum mopane in different carbonization process

et al. 2020

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In Mozambique, charcoal processes can result in several disturbances in natural forests. In the present study, we evaluated the effect of four carbonization methodologies on the anatomical characteristics and near infrared spectra of Spirostachys africana, Terminalia sp. and Colophospermum mopane, to contribute with information for an identification database for charcoal control. The carbonization was done in an electric muffle furnace with different final temperature (400/450 °C) and total time (40 min/2 h, 4 h, 6 h). The quantitative changes in anatomy of charcoal samples was not directly related to carbonization programs with respect to particular features of each species. Species are best distinguished for the NIR spectra in the region from 4000 to 5000 cm −1 . In the analysis by species, charcoal produced at 450 °C-4 h were more distinct in comparison to other programs that resulted in mixed samples. Final temperature influenced more than total process time in species distinction and the use of NIR is reinforced as a potential tool to discriminate species submitted to different carbonization processes. These traits can be applied in species discrimination based on databases of wood anatomical descriptions and charcoal NIR spectra.

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Section: Rayssupporting

confidence: 73%

Section: Rayssupporting

confidence: 52%

Charcoal anatomy and NIR spectra of Spirostachys africana, Terminalia sp. and Colophospermum mopane in different carbonization process

et al. 2020

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“…Only based on PCA graphs, Nisgoski et al (2015b) obtained results adequate for wood discrimination of two species of Euphorbiaceae and two species of Moraceae, but for charcoal only the family could be distinguished.…”

Section: Correct Classification Of Charcoal Samples (%)mentioning

confidence: 99%

“…For carbonized material, near infrared spectrometry has been used to distinguish species (Davrieux et al 2010, Nisgoski et al 2015b) and carbonization processes (Monteiro et al 2010). …”

Section: Introductionmentioning

confidence: 99%

Wood and charcoal identification of five species from the miscellaneous group known in Brazil as “Angelim” by Near-IR and wood anatomy

Muñiz

Carneiro

Batista

et al. 2016

Maderas, Cienc. tecnol.

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Samples of wood sold as "angelim" in Brazil were studied. Disks from the trunks of Diplotropis purpurea, Hymenolobium petraeum, Parkia pendula, Vatairea guianensis and Vatairea paraensis were obtained from Mato Grosso state. Samples from pith to bark of each species were obtained, oriented in the three anatomical planes. Each sample was wrapped in aluminum foil and carbonized in a muffle furnace, with a final temperature of 450 °C and a heating rate of 1,66 °C min -1. The description of the anatomical elements of wood and charcoal samples followed the orientations of the International Association of Wood Anatomists, on the basis of 25 readings regarding frequency and tangential diameter of the vessels and height and width of the rays in micrometers. Infrared analyses were performed with a Bruker Tensor 37 spectrophotometer equipped with an integrating sphere and operating in reflectance mode, with resolution of 4 cm -1 and a spectral range of 10000-4000 cm -1. The wood and charcoal samples were placed on top of integrating sphere and one spectrum was obtained from each surface, resulting in six spectra for each physical sample. The results of anatomical analysis showed that the qualitative characteristics of wood remained in charcoal, so the method can be applied for species discrimination. When comparing cell dimensions, we observed different behavior between species in the same carbonization process in function of cell wall thickness and parenchyma distribution. In infrared analysis, pretreatment influenced adequate discrimination of "angelim" species in wood and charcoal. Linear discriminant analysis based on PCA scores and the region between 4000-6200 cm -1 was more efficient. Near infrared analysis can be used for differentiation of wood and charcoal of "angelim" species.

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“…NIR spectroscopy has been used in charcoal evaluations by means of qualitative analyses, such as the differentiation of carbonization processes (Monteiro et al, 2010) and the distinction of charcoals produced by different forest species (Davrieux et al, 2010;Muniz et al, 2013;Nisgoski et al, 2015a;Ramalho et al, 2017). Moreover, the technique can be used in quantitative approaches for predicting several charcoal properties such as moisture content, volatile matter content, fixed carbon content, ash content (Barbosa et al, 2013), apparent relative density and gravimetric yield (Costa et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Influence of Particles Size on NIR Spectroscopic Estimations of Charcoal Properties

et al. 2019

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The objective of this study was to evaluate the influence of particle size of charcoal samples on the predictive model statistics of charcoal chemical composition based on the NIR spectroscopy. Spectra of Acacia and of Eucalyptus charcoal were collected in the 100, 60 and 40 mesh granulometry, besides the powder remaining at the bottom of the sieves sets. They were subjected to principal component analysis and partial least square regression in order to estimate of volatile material (VMC), ash (AC) and fixed carbon content (FCC) values. The estimation of the FCC, VMC and AC of Eucalyptus based on NIR was more accurate using spectra of lower-particle-size powder. The models for Acacia charcoal were better using spectra measured at 40 mesh to predict FCC, 100 mesh for AC, and smaller size for VMC. NIR spectroscopy was efficient in estimating the immediate chemical composition of charcoal, except for AC.

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NIR and anatomy of wood and charcoal from Moraceae and Euphorbiaceae species

Cited by 20 publications

References 10 publications

Charcoal anatomy and NIR spectra of Spirostachys africana, Terminalia sp. and Colophospermum mopane in different carbonization process

Charcoal anatomy and NIR spectra of Spirostachys africana, Terminalia sp. and Colophospermum mopane in different carbonization process

Wood and charcoal identification of five species from the miscellaneous group known in Brazil as “Angelim” by Near-IR and wood anatomy

Influence of Particles Size on NIR Spectroscopic Estimations of Charcoal Properties

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NIR and anatomy of wood and charcoal from Moraceae and Euphorbiaceae species

Cited by 20 publications

References 10 publications

Charcoal anatomy and NIR spectra of Spirostachys africana, Terminalia sp. and Colophospermum mopane in different carbonization process

Charcoal anatomy and NIR spectra of Spirostachys africana, Terminalia sp. and Colophospermum mopane in different carbonization process

Wood and charcoal identification of five species from the miscellaneous group known in Brazil as &#8220;Angelim&#8221; by Near-IR and wood anatomy

Influence of Particles Size on NIR Spectroscopic Estimations of Charcoal Properties

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Wood and charcoal identification of five species from the miscellaneous group known in Brazil as “Angelim” by Near-IR and wood anatomy