scholarly journals Characterization of Pinus spp needles and evaluation of their potential use for energy

CERNE ◽  
2014 ◽  
Vol 20 (2) ◽  
pp. 245-250 ◽  
Author(s):  
Graciela Inés Bolzon de Muñiz ◽  
Elaine Cristina Lengowski ◽  
Silvana Nisgoski ◽  
Washington Luis Esteves de Magalhães ◽  
Valcineide Tanobe de Oliveira ◽  
...  
Keyword(s):  
Calorific Value ◽  
High Energy ◽  
Ash Content ◽  
Forest Residues ◽  
Gross Calorific Value ◽  
Energy Potential ◽  
New Energy ◽  
Pinus Spp ◽  
Potential Use

The demand for new energy sources is growing and awakening interest in the use of forest residues. Charcoal was prepared at carbonization temperatures of 500 ºC, 600 °C and 700 °C in order to evaluate the potential use of Pinus sp needles for energy. The anatomical and chemical characteristics of the needles and the charcoal produced were also evaluated. The needles were found to have ash content of 2.32% and gross calorific value of 20.30 MJ/kg. The calorific value increased by 45%, reaching 29.64 MJ/kg, after carbonization carried out at 600 ºC. This value is higher than that for charcoal made from eucalyptus (19.25 MJ/kg) and even coconut husks (23.55 MJ/kg), showing the high energy potential of these needles.

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 Caracterização da biomassa de bagaço de cana-de-açúcar com vistas energéticas

ForScience ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. e00928
Author(s):  
Carlos Guilherme Lopes Grotto ◽  
Adão Marcos Ferreira Costa ◽  
Carla Jovania Gomes Colares ◽  
Douglas Henrique Pereira
Keyword(s):  
Sugarcane Bagasse ◽  
Calorific Value ◽  
Energy Generation ◽  
Ash Content ◽  
Energy Potential ◽  
Residual Biomass ◽  
Elementary Analysis ◽  
Direct Energy ◽  
Calorific Power

A utilização de biomassas residuais de plantas utilizadas na agroindústria tem sido crescente. O bagaço de cana-de-açúcar se destaca nesse cenário, já que a cultura da planta é muito difundida, gerando grandes quantidades desse resíduo. Neste contexto é necessário entender as características dessa biomassa para poder otimizar a geração de energia. Diante do exposto, o presente trabalho teve como objetivo caracterizar e avaliar o potencial energético da biomassa de cana-de-açúcar por meio da análise dos principais parâmetros que influenciam esse processo. Foram realizadas análises de poder calorífico superior, análises químicas imediatas, infravermelho e análise elementar, com o intuito de avaliar o potencial energético desse material. Observou-se bom nível de poder calorífico superior, 4309,50 kcal kg-1, além de teores baixos de cinzas, 0,95%, fatores que podem explicar a grande utilização da biomassa de bagaço de cana-de-açúcar para a geração de energia direta, principalmente na indústria. Palavras-chave: Resíduos. Cana-de-açúcar. Fonte de energia.   Characterization of sugar cane bagasse biomass with energy views Abstract The use of residual biomass from plants used in agribusiness has been increasing. The sugarcane bagasse stands out in this scenario, since the plant's culture is very widespread, generating large amounts of this residue. In this context, it is necessary to understand the characteristics of this biomass in order to optimize the energy generation. With the above, the present study had as objective characterize and evaluate energy potential of sugarcane biomass through the analysis of the main parameters that influence the process. Analyzes of superior calorific power, immediate chemical analyzes, infrared and elementary analysis were carried out, in order to evaluate the energetic potential of this material. A good level of higher calorific value was observed, 4309.50 kcal kg-1, in addition to low ash content, 0.95%, factors that may explain the great use of sugarcane bagasse for direct energy generation, mainly in industry. Keywords: Waste. Sugarcane. Energy source.

Physico-chemical Characterization of Forest and Agricultural Residues for Energy Conversion Processes

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Nguyen Hong Nam ◽  
Le Gia Thanh Truc ◽  
Khuong Duy Anh ◽  
Laurent Van De Steene
Keyword(s):  
Energy Conversion ◽  
Chemical Characterization ◽  
Calorific Value ◽  
Forest Residues ◽  
Physico Chemical ◽  
Wide Range ◽  
Biomass Resources ◽  
Thermochemical Processes ◽  
The Difference

Agricultural and forest residues are potential sources of renewable energy in various countries. However, the difference in characteristics of biomass resources presents challenges for energy conversion processes which often require feedstocks that are physically and chemically consistent. This study presented a complete and comprehensive database of characteristics of a wide range of agricultural and forest residues. Moisture, bulk density, calorific value, proximate and elemental compositions, as well as cellulose, hemicellulose, and lignin compositions of a wide range of biomass residues were analyzed. The major impacts of the variability in biomass compositions to biochemical and thermochemical processes were also discussed.

scholarly journals Valorization of briquettes fuel using Pinus spp. sawdust from five regions of Mexico

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 2249-2263
Author(s):  
María Alejandra Ramírez-Ramírez ◽  
Artemio Carrillo-Parra ◽  
Faustino Ruíz-Aquino ◽  
Luis Fernando Pintor-Ibarra ◽  
Nicolás González-Ortega ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Impact Resistance ◽  
Resistance Index ◽  
Calorific Value ◽  
Volatile Matter ◽  
Ash Content ◽  
Fixed Carbon ◽  
Volumetric Expansion ◽  
Pinus Spp ◽  
The Impact

This research characterized briquettes made with Pinus spp. sawdust without the use of additives. For this purpose, 19 samples of sawdust from different wood industries located in five states of the Mexican Republic were used. The densification process was carried out in a vertical hydraulic piston laboratory briquette machine. The briquettes were made with 40 g of sawdust, at 50 °C, 20 kPa and pressing for 5 min. The results obtained varied as follows: moisture content (4.1% to 7.2%), density (813.9 to 1,014.4 kg/m3), volumetric expansion (7.4% to 37.3%), compressive strength (4.9 to 40.8 N/mm), impact resistance index (46.7% to 200%), ash (0.1% to 1.1%), volatile matter (82.9% to 90.7%), fixed carbon (8.9% to 16.4%), and calorific value (20.5 to 22.8 MJ/kg). The density of the briquettes was within the “acceptable” classification (800 to 1,200 kg/m3). It was observed that, the higher the density, the lower the volumetric expansion, the higher the compressive strength, and the higher the impact resistance index. According to the ash content, the briquettes could achieve international quality. Due to high volatile matter values, rapid combustion of the briquettes with little generation of toxic smoke would be expected. Fixed carbon and calorific value results were acceptable.

scholarly journals Basic chemical composition of Pinus spp. sawdust from five regions of Mexico, for bioenergetic purposes

BioResources ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 816-824
Author(s):  
Jonathan Sergio Chávez-Rosales ◽  
Luis Fernando Pintor-Ibarra ◽  
Nicolás González-Ortega ◽  
Rocio Orihuela-Equihua ◽  
Faustino Ruiz-Aquino ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Calorific Value ◽  
Ash Content ◽  
Nuevo Leon ◽  
Pine Sawdust ◽  
Solid Biofuels ◽  
Nuevo León ◽  
Forest Industries ◽  
Total Extractives ◽  
Pinus Spp

The basic chemical composition and calorific value of 19 samples of pine sawdust from different forest industries located in five states of the Mexican Republic (Chihuahua, Michoacán, Durango, Oaxaca, and Nuevo León) were determined. The results obtained ranged as follows: total extractives (6.1% to 23.4%), holocellulose (60.1% to 70.4%), lignin (20.5% to 25.8%), ash (0.27% to 0.95%), pH (4.1 to 5.3), and calorific value (20.1 MJ/kg to 21.0 MJ/kg). Except for the ash content, significant statistical differences were found according to the origin of the pine sawdust samples. Based on the results obtained, the sawdust biomass has the potential to obtain densified solid biofuels.

scholarly journals Characterization of Refuse Derived Fuel Production from Municipal Solid Waste: The Case Studies in Latvia and Lithuania

2020 ◽  
Vol 24 (3) ◽  
pp. 112-118
Author(s):  
Dace Âriņa ◽  
Rūta Bendere ◽  
Gintaras Denafas ◽  
Jānis Kalnačs ◽  
Mait Kriipsalu
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Calorific Value ◽  
Ash Content ◽  
Fuel Production ◽  
Heating Value ◽  
Refuse Derived Fuel ◽  
Morphological Composition ◽  
The Mean

AbstractThe authors determined the morphological composition of refuse derived fuel (RDF) produced in Latvia and Lithuania by manually sorting. The parameters of RDF (moisture, net calorific value, ash content, carbon, nitrogen, hydrogen, sulphur, chlorine, metals) was determined using the EN standards. Comparing obtained results with data from literature, authors have found that the content of plastic is higher but paper and cardboard is lower than typical values. Results also show that the mean parameters for RDF can be classified with the class codes: Net heating value (3); chlorine (3); mercury (1), and responds to limits stated for 3rd class of solid recovered fuel. It is recommended to separate biological waste at source to lower moisture and ash content and increase heating value for potential fuel production from waste.

Potential for pellet manufacturing with wood waste from construction in Costa Rica

2019 ◽  
Vol 38 (8) ◽  
pp. 886-895 ◽  
Author(s):  
Monzerrath Rivera-Tenorio ◽  
Roger Moya
Keyword(s):  
Costa Rica ◽  
Moisture Content ◽  
Mechanical Characteristics ◽  
Calorific Value ◽  
Ash Content ◽  
Wood Waste ◽  
Construction Sector ◽  
Pellet Quality ◽  
Energy Potential ◽  
Physical And Mechanical Characteristics

The construction sector in Costa Rica produces approximately 100 kg per square meter of residues, of which wood waste comprises 30%. Utilization of these wastes is still limited, but options are being sought and biomass is one of them. The aim of this work was to evaluate the characteristics of biomass produced from wood waste from construction, its energy potential, and its appropriateness for pellet manufacturing by determining its energy, physical, and mechanical characteristics. It was found that wood waste from construction is composed of different species with densities below 0.5 g/cm3, 26% moisture content, and 10% ash content; contamination with cement and nails can reach 6%. The process of pellet manufacturing can adapt adequately to using wood waste from construction, with an efficiency or yielding of 33%. Pellets presented a calorific value of 19573 kJ/kg, a bulk density of 1.25 g/cm3, an apparent density of 700 kg/m3, a failure force in compression of 467 N, and durability of 94.28%. According to different standards, the results obtained for biomass from wood waste are within the range established for pellet quality; therefore, wood waste from construction can be used to produce pellets, despite the disadvantage of it presenting high ash content.

Sign in / Sign up

Export Citation Format

Share Document