QUALIDADE DOS PELLETS DE BIOMASSA FLORESTAL PRODUZIDOS EM SANTA CATARINA PARA A GERAÇÃO DE ENERGIA

FLORESTA ◽  
2015 ◽  
Vol 45 (4) ◽  
pp. 833 ◽  
Author(s):  
Alana Spanhol ◽  
Daniela Letícia Nones ◽  
Fabricio Junki Blanco Kumabe ◽  
Martha Andreia Brand
Keyword(s):  
Moisture Content ◽  
Forest Biomass ◽  
Calorific Value ◽  
Quality Standards ◽  
International Standards ◽  
Santa Catarina ◽  
Production Chain ◽  
Fines Content ◽  
Mechanical Durability ◽  
Pinus Spp

Este estudo objetivou determinar as propriedades físicas, químicas e energéticas de pellets de biomassa residual de Pinus spp. produzidos em Santa Catarina, e realizar a comparação com os parâmetros estabelecidos pelas normas internacionais existentes. Foram coletadas nove amostras, onde foram determinadas as propriedades de: dimensões dos pellets, densidade aparente e da unidade, teor de umidade, análise imediata, poder calorífico, durabilidade mecânica e teor de finos. Comparativamente à literatura e aos parâmetros de qualidade das normas: os pellets apresentaram densidade aparente (663,46 kg/m³), densidade da unidade (1711 kg / m³), durabilidade mecânica (99,07%) e poder calorífico superior (20,21 MJ / kg) altos; teor de umidade (7,89%) e de cinzas (0,38%) baixos, indicando boa qualidade dos pellets. Os pellets apresentaram alto teor de finos (1,05%), como característica negativa. Tiveram diâmetro de 6,58 mm; comprimento de 17,31 mm; teor de materiais voláteis de 81,29% e carbono fixo de 18,33%. Os valores médios das propriedades dos pellets atenderam plenamente as normas alemã (DIN Plus) e austríaca (Önorm M7135) e as classes G2 e G3 da suéca (SS 187120), e as classes I1, I2 e I3 da ISO (17225-2), podendo ser usados no setor de serviços e indústrias.AbstractQuality of forest biomass pellets produced in State of Santa Catarina for power generation. This study aimed to determine the physical, chemical and energetic properties of pellets of residual forest biomass of Pinus spp. production chain from the state of Santa Catarina, and compare them to the parameters set by existing international standards. Nine samples were collected, in which the properties were determined: size of pellets; bulk density and unity density; moisture content; immediate analysis; calorific value; mechanical durability and fines content. Compared to literature and quality standards parameters: the pellets showed high apparent density (663.46 kg / m³), unit density (1711 kg / m³), mechanical durability (99.07%) and gross calorific value (20.21 MJ / kg); low moisture content (7.89%) and ash (0.38%), indicating good quality pellets. The pellets had a high fines content (1.05%), as a negative characteristic. They had diameter of 6.58 mm; length 17.31 mm; volatiles content of 81.29% and 18.33% fixed carbon. The average values of properties of the pellets fully met the German standards (DIN Plus) and Austria (ÖNORM M7135) and G2 and G3 classes of Swedish (SS 187 120), and the classes I1, I2 and I3 ISO (17225-2), and can be used in the service and industry sectors.Keywords: Pinus waste; densified; pellet quality standards. 

scholarly journals PEMANFAATAN LIMBAH LUMPUR IPAL KAWASAN INDUSTRI DAN SERBUK GERGAJI KAYU MENJADI BRIKET

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Sissar Eka Bimantara ◽  
Euis Nurul Hidayah
Keyword(s):  
Moisture Content ◽  
Research Methodology ◽  
Calorific Value ◽  
Quality Standards ◽  
Ash Content ◽  
Heating Value ◽  
Wood Sawdust ◽  
Quality Testing ◽  
Heat Value

Lumpur IPAL pada Kawasan Industri sampai saat ini belum dapat dimanfaatkan dengan baik, pemanfaatan lumpur IPAL menjadi briket merupakan salah satu upaya untuk mengatasi permasalahan limbah lumpur IPAL. Tujuan penelitian ini adalah mengetahui lumpur IPAL dengan campuran serbuk gergaji kayu dapat dijadikan bahan bakar alternatif berupa briket, mengetahui pengaruh variasi lumpur IPAL dan serbuk gergaji kayu terhadap mutu briket berupa kadar abu, nilai kalor, kadar air , dan mengetahui komposisi terbaik antara lumpur IPAL dan serbuk gergaji kayu untuk menghasilkan nilai kalor optimum pada briket. Metodologi penelitian meliputi pengeringan bahan, karbonisasi bahan, penghalusan dan penyaringan bahan 20 mesh (841 µm), 40 mesh (420µm), dan 60 mesh (250 µm), pencetakan dan pengepresan briket, serta pengeringan briket. Selanjutnya dilakukan uji mutu briket, hasil analisis pada briket terbaik terdapat pada perbandingan 20 : 80 dengan menggunakan ayakan 60 mesh, memiliki nilai kalor 4366,8 kal/g, kadar air 1,26% dan kadar abu 1,32%. Nilai kalor pada briket masih belum memenuhi baku mutu dari SNI 4931 Tahun 2010, Minimnya nilai kalor yang dihasilkan bisa juga karena variabel perlakuan, dengan perbandingan yang dilakukan terhadap lumpur dan serbuk gergaji serta menggunakan ukuran ayakan yang berbeda. Kata Kunci : briket, lumpur IPAL, serbuk gergaji kayu. IPAL sludge in the Ngoro Persada Industry has yet to be utilized properly, utilizing IPAL sludge into briquettes is one of the efforts to solve this problem. The aim of this research was to determine the IPAL sludge with a mixture of wood sawdust can be used as an alternative fuel in the form of briquettes, to determine the effect of variations in IPAL sludge and wood sawdust on the quality of briquettes in the form of heat value, ash content and moisture content as well as knowing the best composition between IPAL sludge and wood sawdust to produce briquettes with the best heating value. The research methodology included material drying, carbonization of materials, refining and filtering of 20 mesh (841 μm), 40 mesh (420μm), and 60 mesh (250 μm), printing and pressing briquettes, and briquette drying. Furthermore, briquette quality testing was conducted, the results showed that the best briquettes were at a ratio of 20: 80 using 60 mesh sleve, having a heating value of 4366.8 cal / g, 1.26% moisture content and 1.32% ash content. The calorific value of briquettes still does not meet the quality standards of SNI 4931 of 2010, the lack of heat value produced can also be due to treatment variables, with the comparison carried out on sludge and wood sawdust and using different sieve sizes. Keywords: briquettes, IPAL sludge, wood sawdust.

Wet route pellets production using primary sludge from kraft pulp mill

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bruna Virgínia Cunha Rodrigues ◽  
Angélica de Cássia Oliveira Carneiro ◽  
Claudio Mudadu Silva ◽  
Caio Moreira Miquelino Eleto Torres ◽  
Mateus Alves de Magalhães
Keyword(s):  
Moisture Content ◽  
Kraft Pulp ◽  
Treatment Plant ◽  
Pulp Mill ◽  
Effluent Treatment ◽  
Primary Sludge ◽  
Heating Value ◽  
Fines Content ◽  
Kraft Pulp Mill ◽  
Mechanical Durability

Abstract The substantial expansion of the Brazilian pulp and paper industry in the last years resulted in a significant increase in the solid waste generation. This paper investigates the production of pellets using primary sludge from the effluent treatment plant of a kraft pulp mill, as a fuel for producing energy, using a novel wet route process. The pellet samples were produced in a laboratory pelletizing press, which has a horizontal circular matrix. The samples were characterized by moisture content, high heating value, ash content, dimensions (diameter and length), mechanical durability and fines content. The net heating value and energetic density were also measured. The pellets manufactured with primary sludge were compared to the European standard for non-woody pellets. Pelletization caused a reduction of the moisture content by 37.8 %, and increased the net heating value by 41 % and bulk density by approximately 39 %, which resulted in a 263 % increase in the material´s energetic density. Pellet production using a wet route process was appropriate for the primary sludge, and produced pellets with a high mechanical durability (99.3 %) and low fines content (0.062 %), indicating the potential of thermal valorization for incineration in the biomass boiler to produce high-quality steam.

scholarly journals Effects of Biomass Moisture Content and Process Temperature on Biopellet Quality Derived from Rubber Seed Shell and Ater Bamboo (Gigantochloa atter)

2018 ◽  
Vol 10 (2) ◽  
pp. 63-74 ◽  
Author(s):  
I Dewa Gede Putra Prabawa
Keyword(s):  
Moisture Content ◽  
Bulk Density ◽  
Calorific Value ◽  
Process Temperature ◽  
High Moisture Content ◽  
High Moisture ◽  
Rubber Seed ◽  
Mechanical Durability ◽  
European Standards

The purposes of this research were to study the ieffects of biomass moisture content and process temperature on the quality of biopellet derived from rubber seed shell and bamboo ater (Gigantochloa atter). The biomass was conditioned at different moisture contents (6, 12, 14, 16, 18, and 20% w/w), and the biopelet was produced at a pressure of 597,24 kg/cm2 with various process temperatures (100, 125, 150, 175, and 200oC). The results showed that the properties of produced biopellets were significantly affected by the variation of moisture content and process temperature. High moisture content of biomass could increase the moisture content of biopellet while the calorific value and ash content decreased. With the increase in process temperatures, calorific value and ash increased whereas the moisture content of biopellet decreased. Mechanical durability was enhanced with the increase inthe moisture content of biomass, starting from 6% to 18%;and was improved with the increase in the process temperatures, starting from 100oC to 175oC. However, the bulk density of biopellet increased with the increase inthe moisture content of biomass, starting from 6% to 16%, and was improved with the increase in the process temperatures from 100oC to 150oC. The best quality of biopellet was produced  in the biomass moisture content of 16% and the process temperature of 150oC. That biopellet had mechanical durability of 99.16%, calorific value of 4,402 cal/g, bulk density of 1,157 kg/m3, moisture content of 6.71%, ash of 1.19%, nitrogen of 0.15%, Sulphur of 0.013%, and chlorine of <0.1 ppm. That biopellet quality met European standards (EN 14961-2).

scholarly journals Storage of Wood Chips

2020 ◽  
Vol 41 (2) ◽  
pp. 277-286
Author(s):  
Erik Anerud ◽  
Gunnar Larsson ◽  
Lars Eliasson
Keyword(s):  
Moisture Content ◽  
Forest Biomass ◽  
Calorific Value ◽  
Economic Loss ◽  
High Energy ◽  
Production Costs ◽  
Energy Losses ◽  
Fuel Quality ◽  
Chip Size ◽  
Machine Utilisation

To make forest biomass more competitive, increased efficiency in the handling and supply system is needed, thus producing high-quality fuel at a lower cost. Operating costs can be reduced if the target chip size is increased, as this increases productivity and reduces chipper fuel consumption. However, the chips need to be storedin order to meet fluctuating seasonal demand and maintain high machine utilisation. Due to biomass degradation, storage of comminuted biomass can lead to high energy losses, but can also increase fuel quality, e.g. by reducing moisture content and increasing net calorific value. This study evaluated the effects of storage on dry matter losses and differences in fuel quality of the stored biomass for three target chip sizes and three materials during six months of storage. The results showed that coarse chips had significantly lower moisture content and lower energy losses after storage than fine chips. Overall, changes during storage resulted in an economic loss of 3–4% per oven-dry ton for fine chips, but an economic gain of 2–6% for coarse chips. Thus increased target chip size can increase the competitiveness of forest biomass through decreased production costs and reduced storage costs. It can also ensure higher, more consistent fuel quality.

scholarly journals INFLUÊNCIA DA ÉPOCA DE ESTOCAGEM NA QUALIDADE DA BIOMASSA FLORESTAL PARA A GERAÇÃO DE ENERGIA

FLORESTA ◽  
2012 ◽  
Vol 42 (2) ◽  
pp. 369 ◽  
Author(s):  
Martha Andreia Brand ◽  
José Otávio Brito ◽  
Waldir Ferreira Quirino ◽  
Graciela Inês Bolzon De Muniz
Keyword(s):  
Moisture Content ◽  
Pinus Taeda ◽  
Energy Savings ◽  
Forest Biomass ◽  
Calorific Value ◽  
Early Spring ◽  
Late Winter ◽  
Storage Season ◽  
Eucalyptus Dunnii

Este trabalho objetivou determinar a época de estocagem ideal para a melhoria da qualidade da biomassa florestal para geração de energia. O experimento foi realizado em Lages, SC, entre outubro de 2003 e fevereiro de 2005. Foram avaliados 4 lotes de toras com casca de Pinus taeda e Eucalyptus dunnii, em pilhas, com amostragem nas seguintes condições: material recém-colhido, com dois, quatro e seis meses de estocagem. O lote 1 foi armazenado entre outubro (2003) e maio (2004), o lote 2, de janeiro a agosto de 2004, o lote 3, de maio a novembro de 2004 e o lote 4, de agosto de 2004 a fevereiro de 2005. As propriedades avaliadas foram: teor de umidade na base úmida, poder calorífico superior e líquido. A época de estocagem teve influência sobre a qualidade energética da biomassa durante a estocagem, com alterações na umidade e poder calorífico líquido. Para ambas as espécies, as melhores épocas de estocagem foram entre agosto e fevereiro (lote 4) e outubro e maio (lote 1), com as maiores perdas de umidade e maiores ganhos energéticos. Portanto, a biomassa florestal colhida na saída do inverno ou início da primavera, que permaneceu sob estocagem durante o verão até o início do inverno, apresentou melhor qualidade energética.Palavras-chave: Energia; Pinus taeda; Eucalyptus dunnii. AbstractInfluence of the storage season over the quality of wood fuel. This study aimed to determine the optimal storage season for improving the quality of forest biomass for energy generation. The experiment was carried out in Lages, Brazil, between October 2003 and February 2005. 4 lots of Pinus taeda and Eucalyptus dunnii logs were stocked, in piles, with samples collected from the freshly harvested material, with two, four and six months of storage. The lot 1 was stored between October (2003) and May (2004), lot 2 (January-August (2004)), lot 3 (May-November (2204)) and 4 (August (2004)-February (2005)). The evaluated properties were as follows: moisture content on wet basis, gross and net calorific value. The storage season had influence on the biomass quality, with changes in moisture content and net calorific value. For both species, the best storage season was between August and February (lot 4) and from October to May (lot 1), with the greatest loss of moisture and higher energy savings. Therefore, forest biomass harvested in late winter or early spring, which remained in storage during the summer up to early winter had a better energy quality.Keywords: Energy; Pinus taeda; Eucalyptus dunnii

scholarly journals Storage of caatinga forest biomass to improve the quality of wood for energy

2016 ◽  
Vol 46 (7) ◽  
pp. 1178-1184 ◽  
Author(s):  
Martha Andreia Brand ◽  
Stephenson Ramalho Lacerda ◽  
Juliana de Oliveira ◽  
Gisele Paim Ribeiro Domingues Lopes ◽  
Nayara Bergamo Casagrande
Keyword(s):  
Moisture Content ◽  
Rainy Season ◽  
Forest Biomass ◽  
Calorific Value ◽  
Ash Content ◽  
Biomass Energy ◽  
General State ◽  
High Quality ◽  
Storage Times

ABSTRACT: This study aimed to evaluate the quality of forest biomass energy, coming from the Caatinga, for different storage times in the field. The study was conducted in southern Piauí, between January and February (rainy season). Samples were collected containing branches and trunks of various species, and samples of branches and trunks separately in 5 sample units of 20x20m. Samples were evaluated in the general state freshly harvested and samples of branches and logs after 15 and 30 days of storage in piles in the field. The analyzes carried out were: moisture content on wet basis, ash content and calorific value. Moisture content of freshly harvested biomass ranged from 39% with two days after cutting to 79% in biomass cut and left distributed in the field for 10 days. After storage in piles for 15 days, branches showed moisture content of 18% and the logs 21%, and net calorific value of 3432kcal kg-1 and 3274kcal kg-1, respectively. After 30 days, moisture content for branches was 13% and the logs 21%, and net calorific value of 3672kcal kg-1 and 3240kcal kg-1, respectively. Ash content of the biomass was low. Cutting trees in the rainy season, with maintenance of biomass in the field for 10 days, resulted in an increment of moisture content. Branches had the best behaviour during the storage. Fifteen days of storage are sufficient for the caatinga biomass to achieve high-quality energy.

scholarly journals Influence of storage time on the quality of biomass for energy production in humid subtropical regions

CERNE ◽  
2010 ◽  
Vol 16 (4) ◽  
pp. 531-537 ◽  
Author(s):  
Martha Andreia Brand ◽  
Graciela Inês Bolzon de Muñiz ◽  
Waldir Ferreira Quirino ◽  
José Otávio Brito
Keyword(s):  
Moisture Content ◽  
Energy Production ◽  
Storage Time ◽  
Chemical Properties ◽  
Storage Period ◽  
Calorific Value ◽  
Ash Content ◽  
Gross Calorific Value ◽  
Eucalyptus Dunnii ◽  
Pinus Spp

This work aims to determine an optimal storage time of forest biomass for use in energy production, through analysis of variations in physical and chemical properties of with bark timber over the storage period. The study was conducted in the municipality of Lages, SC, over a span of 18 months. The experiment used with bark logs of Pinus taeda and Eucalyptus dunnii, with varying diameters, and slabs of Pinus spp., stored in piles. The material was sampled freshly harvested (control), after two, after four and after six months of storage. Four lots were used, harvested and stored at the spring, summer, autumn and winter seasons. Properties being assessed included moisture content (wet basis), gross calorific value, net calorific value and ash content. Results demonstrated that storage time influenced moisture content and net calorific value, yet it had no influence on gross calorific value and ash content. Optimal storage time ranged from two to four months, depending on the species, form of biomass and storage season. The best behavior regarding quality after storage was from Pinus slabs, followed by Eucalyptus logs and Pinus logs, the latter showing the worst behavior.

scholarly journals Analysis of Selected Quality Features of Wood Pellets

2020 ◽  
Vol 24 (1) ◽  
pp. 25-34
Author(s):  
Józef Gorzelany ◽  
Miłosz Zardzewiały ◽  
Piotr Murawski ◽  
Natalia Matłok
Keyword(s):  
Energy Use ◽  
Chemical Properties ◽  
Calorific Value ◽  
Quality Standards ◽  
Ash Content ◽  
Raw Material ◽  
Wood Pellets ◽  
Wood Material ◽  
Mechanical Durability ◽  
And Chemical Properties

AbstractThe article presents an analysis of the energy, mechanical and chemical properties of pellets made of wood material. According to the manufacturer, wood pellets were made of hard wood shredded to fractions approx. 1 mm thick and up to 3-4 mm long, and of a waste source - sawdust. Measurements of the selected properties were carried out on pellets with a diameter of 6 and 8 mm. Mechanical durability, humidity, crumble rate, ash quantity, calorific value were determined, as well as macronutrient and heavy metals content. The calorific value of pellets, with moisture content from 7.48% to 6.76% and ash content from 0.31% to 0.55%, ranged from 17.71-19.18 MJ·kg−1, which testified to the beneficial energy use of the tested raw material. Based on the conducted research, it was found that the mechanical properties of pellets made of both sawdust and hard wood predispose them for use as boiler fuel. The tested materials met high quality standards for wood pellets used for non-industrial and industrial purposes.

scholarly journals Fast measurement by infrared spectroscopy as support to woody biofuels quality determination

2016 ◽  
Vol 47 (1) ◽  
pp. 17 ◽  
Author(s):  
Daniele Duca ◽  
Andrea Pizzi ◽  
Manuela Mancini ◽  
Giorgio Rossini ◽  
Chiara Mengarelli ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Wood Chip ◽  
Principal Component ◽  
Calorific Value ◽  
International Standards ◽  
Biofuel Production ◽  
Production Chain ◽  
Biomass Quality ◽  
Fast Measurement ◽  
Solid Biofuel

The increase in the demand for energy supply during the past few decades has brought and will bring to a growth in the utilisation of renewable resources, in particular of solid biomasses. Considering the variability in the properties of biomass and the globalisation of the timber market, a chemical and physical characterisation is essential to determine the biomass quality. The specific international standards on solid biofuels (ISO 17225 series) describe proper specification and classification of wood chip and pellet, to ensure appropriate quality. Moreover, standard requires information about origin and source of the biomass, normally only to be declared by the producers. In order to fulfill the requirements for the biomass quality, the origin and the source should be assessed, even if currently is hard to determine, in particular on milled or densified biomass. Infrared spectroscopy can provide information on the biomass at the chemical level, directly linked also to its origin and source. This technique is fast and not destructive thus suitable also for online monitoring along the biofuel production chain. In this study, 60 samples belonging to 8 different species were collected and related spectra were acquired using a Fourier transform infrared (IR) spectrometer equipped with a module for solid analysis and analysed by principal component analysis. The results obtained show that the method is very efficient in the identification between coniferous and deciduous wood (99% confidence level) and good results were obtained in the recognition of coniferous/deciduous mixtures, too. Nevertheless, some clear differences have been also noted among intra-class grouping, but additional tests should be carried out. This technique can provide useful information to solid biofuel stakeholders about wood quality and origin, important especially for sustainability issues. Further work will be oriented to the development of IR methodologies for the fast measurement of other important biomass parameters (<em>e.g.</em>, ash content, high calorific value, nitrogen content, <em>etc</em>.).

scholarly journals QUALIDADE ENERGÉTICA DE CAVACOS DE Pinus spp. EM DIFERENTES CONDIÇÕES DE ARMAZENAMENTO

2020 ◽  
Vol 35 (2) ◽  
pp. 236-245
Author(s):  
DOUGLAS EDSON CARVALHO ◽  
FELIPE SCHROEDER ◽  
RAMIRO FARIA FRANÇA ◽  
DIMAS AGOSTINHO DA SILVA
Keyword(s):  
Moisture Content ◽  
Carbon Content ◽  
Calorific Value ◽  
Bare Soil ◽  
Energy Performance ◽  
Storage Conditions ◽  
Organic Carbon Content ◽  
Calorific Power ◽  
Pinus Spp

QUALIDADE ENERGÉTICA DE CAVACOS DE Pinus spp. EM DIFERENTES CONDIÇÕES DE ARMAZENAMENTO   DOUGLAS EDSON CARVALHO1, RAMIRO FARIA FRANÇA2, FELIPE SCHROEDER3, DIMAS AGOSTINHO DA SILVA4   1Departamento de Engenharia e Tecnologia Florestal, Universidade Federal do Paraná, Av. Prefeito Lothário Meissner, 632 - Jardim Botânico, CEP 80210-170, Curitiba - PR, Brasil. [email protected] 2Departamento de Engenharia e Tecnologia Florestal, Universidade Federal do Paraná, Av. Prefeito Lothário Meissner, 632 - Jardim Botânico, CEP 80210-170, Curitiba - PR, Brasil. [email protected] 3Engenheiro Florestal. Rua Joseph Strenzel, Vila Nova, CEP 89295-000, Rio Negrinho, SC, Brasil. [email protected] 4Departamento de Engenharia e Tecnologia Florestal, Universidade Federal do Paraná, Av. Prefeito Lothário Meissner, 632 - Jardim Botânico, CEP 80210-170, Curitiba - PR, Brasil. [email protected]   RESUMO: O desempenho energético de biomassas de madeira é uma condição preponderante para sua aplicação em escala industrial. Conhecer as condições de armazenamento que aprimorem seu uso é necessário. Nesse sentido, o objetivo do presente trabalho foi caracterizar os parâmetros energéticos do cavaco de madeira de Pinus spp.. A metodologia aplicada consistiu na utilização dos seguintes tratamentos: (T1) solo desnudo e sem cobertura; (T2) solo coberto e sem cobertura; (T3) solo coberto e com cobertura. Foram coletados dados climatológicos do local do experimento e avaliados os seguintes parâmetros do material: teor de umidade do cavaco (TU), análise química imediata (AQI), teor de carbono orgânico total (TCO) e poder calorífico útil (PCU). Ao final do experimento o menor valor de teor de umidade foi obtido para o T3 (10%). O armazenamento do material com cobertura foi determinante para este resultado. Foram constatadas reduções no teor de voláteis e aumento no teor de cinzas e no teor de carbono fixo para todos os tratamentos. A estocagem da biomassa isolada do solo e com cobertura (T3) é um procedimento para aprimorar as qualidades energéticas do cavaco atribuindo poder calorífico útil de 4.017 Kcal.kg-1, adequado para o uso na geração de energia.   Palavras-chave: Teor de umidade, teor de carbono, poder calorífico, qualidade da biomassa.   Pinus spp. ENERGY QUALITY OF UNDER DIFFERENT STORAGE CONDITIONS   ABSTRACT: The energy performance of wood biomass is a major condition for its application on an industrial scale. Knowing the storage conditions that enhance its use is required. This study aimed to characterize the energetic parameters of Pinus spp. in different storage methods. The applied methodology consisted of using the following treatments: (T1) bare soil and without cover; (T2) covered and uncovered soil; (T3) Covered and covered ground. Climatological data were collected from the experiment site and the following material parameters were evaluated: chip moisture content, immediate chemical analysis (ICA), total organic carbon content and superior calorific useful (SCU). At the end of the experiment the lowest moisture content value was obtained for T3 (10%). The storage of the covered material was crucial for this result. Reductions in volatile content and increase in ash content and fixed carbon content were observed for all treatments after the time of the experiment. The storage of biomass isolated from the soil and with cover (T3) is a procedure to improve the energetic chip qualities, attributing a useful calorific power of 4.017 Kcal.kg-1, suitable for use in power generation.   Keywords: Moisture content, carbon content, calorific value, biomass quality.

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