Multivariate analysis applied to evaluation of Eucalyptus clones for bioenergy production

Couto, Allan Motta; Protásio, Thiago de Paula; Trugilho, Paulo Fernando; Neves, Thiago Andrade; Sá, Vânia Aparecida de

doi:10.1590/s0104-77602013000400001

Cited by 16 publications

(19 citation statements)

References 11 publications

(20 reference statements)

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“…Elemental analyses presented in Table 3 are in accordance with the values found in other studies (BRUM, 2007;PAULA et al, 2011;SEYE;CORTEZ;GÓMEZ, 2003;SANTOS et al, 2012;COUTO et al, 2013). Observing these values, all materials show high H/C and O/C ratios, which indicates presence of aromatic structures (Zheng et al, 2013).…”

Section: Thermogravimetric Analysis -Tgasupporting

confidence: 88%

Different Plant Biomass Characterizations for Biochar Production

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Dessimoni

et al. 2017

CERNE

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ABSTRACT:The use of biomass for biochar production is already a reality. However, little is known about its structure and composition, mainly due to the changes occurred during the heat treatment. This information is crucial since it will have an immediate impact on the quality and applicability of the material produced. Therefore, this study aimed to analyze different biomasses, characterizing their potential for biochar production. Woods from Eucalyptus urophylla and Corymbia citriodora and coffee husk were assessed. The biomass was ground and sieved, and then stored under controlled conditions of temperature and humidity. Subsequently, the material characterizations were performed through proximate analysis, elemental analysis, thermogravimetric analysis and Fourier transform infrared spectroscopy (FTIR). In general, all biomasses presented potential to be used in the production of biochar, where low H/C and O/C ratios were found. The coffee husk has higher lignin, extractives, ash and fixed carbon contents, which certainly contributed to its greater thermal stability. The FTIR analysis showed the presence of bands related to recalcitrant chemical groups such as carboxylics and phenolics in the spectra of all biomasses. The thermogram profiles of the C. citriodora and E. urophylla wood were similar to each other, and different from that of the coffee husk, which showed higher thermal stability. CARACTERIZAÇÃO DE DIFERENTES BIOMASSAS VEGETAIS PARA PRODUÇÃO DE BIOCARVÕESRESUMO: A utilização da biomassa para produção de biocarvões já é uma realidade. Porém, pouco se sabe sobre a sua estrutura e composição, principalmente, mediante as transformações ocorridas durante o tratamento térmico. Estas informações são fundamentais, uma vez que terão impacto imediato na qualidade e aplicabilidade do material produzido. Portanto este trabalho objetivou analisar diferentes biomassas, caracterizando-as como potenciais para produção de biocarvões. Foram utilizadas madeiras de Eucalyptus urophylla e Corymbia citriodora e cascas de café. As biomassas foram moídas e peneiradas e, em seguida, armazenadas sob condições de temperatura e umidade controlada. Posteriormente realizou-se a caracterização dos materiais, por meio de análise química, química imediata, elementar (CHNS-O), térmica (TGA e DTA) e de espectroscopia vibracional na região do infravermelho (FTIR). De forma geral, todas as biomassas apresentaram potencial para serem utilizadas na produção de biocarvão, no entanto, a casca de café apresentou maiores teores de lignina, extrativos, cinzas e carbono fixo, o que, certamente, contribuiu para que a mesma apresentasse maior potencial de utilização como condicionador de solos. Com relação à análise de FTIR, observou-se a presença de bandas referentes aos grupos químicos recalcitrantes, como os carboxílicos e fenólicos nos espectros de todas as biomassas. O perfil dos termogramas de C. citriodora e de E. urophylla foram semelhantes entre si e diferentes da casca de café, que apresentou maior estabilidade térmica.

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Section: Thermogravimetric Analysis -Tgasupporting

confidence: 88%

Different Plant Biomass Characterizations for Biochar Production

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Dessimoni

et al. 2017

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“…The calorific values obtained for wastes were within the range reported in literature for eucalyptus wood Furtado et al, 2012;Carneiro et al, 2014;Reis et al, 2012;Couto et al, 2013). Table 4 reveal the negative influence of moisture on the net calorific values of wastes.…”

Section: Resultssupporting

confidence: 80%

Evaluation of Biomass Properties for the Production of Solid Biofuels

et al. 2019

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The efficient use of biomass as fuel requires prior knowledge of the composition and properties of the material in order to be able to develop technologies for its efficient combustion while ensuring that emissions of pollutants remain within acceptable limits. Therefore, the analysis of the physical and chemical properties of these materials is essential in order to evaluate their potential for energy purposes. Given the need for improved understanding of biofuels, this study aimed to characterize biomass waste obtained from the manufacturing process of wood panels and urban waste for the production of solid biofuels. Biomass wastes were characterized in terms of their physical and chemical properties. Wastes that presented the poorest qualities for use as fuels were eucalyptus bark, industrial waste, and sweepings, which had high ash contents and low calorific values. The remaining wastes showed satisfactory characteristics for use as solid biofuels.

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“…It is possible to notice, for example, that R2 has the lowest HHV, consequence of the highest ash content (COUTO et al, 2013). Energy density is the combination of the HHV and basic density, meaning that less dense residues would require a larger amount than denser ones, to generate the same amount of energy.…”

Section: C Peres Et Al (2019)mentioning

confidence: 99%

A new approach to classify wood pruning residues for energy purposes

Peres¹,

Carneiro²,

Figueiró³

et al. 2019

RCM

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The utilization of urban pruning residues for energy production is a sustainable alternative for management of cities. However, the high heterogeneity of these materials is a harmful aspect for its energetic use. Thus, an optimized method is necessary to categorize these residues by similarity, taking the most advantage of the desirable energetic properties of each group. The aim of this study was applying the principal component analysis as a method of pruning residues classification for its energetic use optimization. The structural and proximate chemical composition, basic density, higher heating value, energy density of four pruning residues was determined. Posteriorly, the residues were separated in groups according these characteristics. To generate energy in the most efficient way, the residues were grouped, being group 1 (R2), group 2 (R1) and group 3 (R3 and R4). Groups 1 and 2 are considered more suitable for direct burning, and group 3 for pyrolysis. This process is justified by the increase of the residues value, as the charcoal could be sold to different purposes than the wood, such as the steel industry.

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Multivariate analysis applied to evaluation of Eucalyptus clones for bioenergy production

Cited by 16 publications

References 11 publications

Different Plant Biomass Characterizations for Biochar Production

Different Plant Biomass Characterizations for Biochar Production

Evaluation of Biomass Properties for the Production of Solid Biofuels

A new approach to classify wood pruning residues for energy purposes

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