scholarly journals PERBANDINGAN NYALA API TERHADAP NYALA API PADA PELLET MERANTI,MERBAU DAN SONOKELING

2020 ◽  
Vol 3 (2) ◽  
pp. 84
Author(s):  
M Syeh Amrozhi
Keyword(s):  
Moisture Content ◽  
Wood Pellet

Biomassa merupakan energi alternatif yang dapat menjadi salah satu solusi untuk mengatasi krisis energi di Indonesia. Wood pellet adalah  Pengolahan limbah kayu dengan cara menghancurkan limbah kayu menjadi serbuk halus, kemudian dipadatkan dengan mesin press sehingga berbentuk seperti pellet. Wood Pellet berfungsi sebagai energi alternatif ramah lingkungan dengan kadar co2 yang rendah sehingga menghasilkan pembakaran yang sempurna  Tujuan dari penelitian ini adalah mengetahui pengaruh temperatur terhadap warna  wood pellet  biomassa, kemudahan biomassa menyerap moisture content, dan kekerasan dari pellet biomassa yang berasal dari merbau,meranti dan sonokeling serbuk merbau,meranti dan sonokeling  merupakan hasil samping dari indutri kayu yang pemanfaatannya masih terbatas. Analisis yang dilakukan untuk mengetahui karakteristik tiap biomassa adalah bentuk wood pellet temperatur  dari biomassa,dan  warna  dari wood pellet, . Semakin tinggi suhu pembakaran  mengakibatkan semakin mudah utuk mengetahui warna dan bentuk  dari wood pellet.  MWood pellet mempunyai temperatur tinggi dengan  angka 550  dan mempunyai temperatur terendah pada temperatur 350 C

Comparative Analysis of Sorption Isotherms for Wood Pellets and Solid Wood

2019 ◽  
Vol 35 (4) ◽  
pp. 475-479 ◽  
Author(s):  
Jun Sian Lee ◽  
Shahab Sokhansanj ◽  
C. Jim Lim ◽  
Anthony Lau ◽  
Tony Bi
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Equilibrium Moisture Content ◽  
Sorption Isotherms ◽  
Solid Wood ◽  
Wood Chips ◽  
Published Data ◽  
Wood Pellets ◽  
Wood Pellet ◽  
Equilibrium Relative Humidity

Abstract.The published data on equilibrium moisture content vs. equilibrium relative humidity (EMC-ERH) for wood pellet do not cover the range of temperature and relative humidity to which a pellet is exposed to during its storage and handling. A few published EMC-ERH relations covering a wider range of temperatures and relative humidity are available for solid wood (lumber) and wood chips. The question is whether the data for solid wood is applicable to wood pellets. For this research, we examined the sorption isotherms of wood pellets and solid wood. The analysis shows that EMC for solid wood is higher than the EMC for wood pellet for a relative humidity larger than 30%. The slope of EMC-ERH isotherm for solid wood in the range of 30%-70% is slightly steeper than the slope of isotherm for wood pellet, indicating the pellet’s EMC is less sensitive to ERH when compared to EMC-ERH for solid wood. Keywords: EMC, ERH, Densified biomass, Equilibrium moisture content, Equilibrium relative humidity, Solid wood, Wood pellets.

scholarly journals Optimizing Quality of Wood Pellets Made of Hardwood Processing Residues

Forests ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 607 ◽  
Author(s):  
Thiffault ◽  
Barrette ◽  
Blanchet ◽  
Nguyen ◽  
Adjalle
Keyword(s):  
Moisture Content ◽  
Mechanical Strength ◽  
Small Scale ◽  
Pellet Quality ◽  
Wood Pellets ◽  
Wood Pellet ◽  
Green Wood ◽  
Wood Processing ◽  
Pellet Production

Small-scale wood pellet producers often use a trial-and-error approach for determining adequate blending of available wood processing residues and pelletizing parameters. Developing general guidelines for optimizing wood pellet quality and meeting market standards would facilitate their market entry and profitability. Four types of hardwood residues, including green wood chips, dry shavings, and solid and engineered wood sawdust, were investigated to determine the optimum blends of feedstocks and pelletizing conditions to produce pellets with low friction force, high density and high mechanical strength. The feedstock properties reported in this study included particle size distribution, wood moisture content, bulk density, ash content, calorific values, hemicelluloses, lignin, cellulose, extractives, ash major and minor elements, and carbon, nitrogen, and sulfur. All residues tested could potentially be used for wood pellet production. However, high concentrations of metals, such as aluminum, could restrict their use for accessing markets for high-quality pellets. Feedstock moisture content and composition (controlled by the proportions of the various residue sources within blends) were the most important parameters that determined pellet quality, with pelletizing process parameters having less overall influence. Residue blends with a moisture content of 9%–13.5% (dry basis), composed of 25%–50% of sawdust generated by sawing of wood pieces and a portion of green chips generated by trimming of green wood, when combined with a compressive force of 2000 N or more during pelletizing, provided optimum results in terms of minimizing friction and increasing pellet density and mechanical strength. Developing formal relationships between the type of process that generates residues, the properties of residues hence generated, and the quality of wood pellets can contribute to optimize pellet production methods.

scholarly journals The Effect of Moisture Content on the Tar Characteristic of Wood Pellet Feedstock in a Downdraft Gasifier

2020 ◽  
Vol 10 (8) ◽  
pp. 2760
Author(s):  
Rizqi Fitri Naryanto ◽  
Hiroshi Enomoto ◽  
Anh Vo Cong ◽  
Kazuki Fukadu ◽  
Zheng Zong ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Moisture Content ◽  
Total Concentration ◽  
Biomass Gasification ◽  
Gas Chromatography Mass Spectrometry ◽  
Gravimetric Analysis ◽  
Wood Pellets ◽  
Wood Pellet ◽  
Downdraft Gasifier ◽  
Gasification Process

This study examined the tar characteristic of wood pellet using a downdraft gasifier system. The wood pellet was used as a feedstock with a variation of moisture content between 2 to 6 wt. %. Tar sample was taken using the JP 2009-40885 method. Gas chromatography mass spectrometry and gravimetric analysis were used to identify and to analyze the tar sample, respectively. The results show that an increase in moisture content slightly decreased the total concentration of tar formation on the nine tar compounds of the biomass. Additionally, the lowest moisture content produced the highest amount of light tar on tar classification. The amount of light tar indicates the ease of ignition in the gasifier. Therefore, this condition will minimize the failure-of-equipment problem because of no clogs in the gasifier equipment. The lowest moisture content had the lowest tar density, and this minimized the deposit of tar in the gasifier. Therefore, the lowest moisture content had low tar production in the biomass gasification process using wood pellets.

scholarly journals KADAR AIR, KERAPATAN, DAN KADAR ABU WOOD PELLET SERBUK GERGAJI KAYU GALAM (Melaleuca cajuputi Roxb) DAN KAYU AKASIA (Acacia mangium Wild)

2018 ◽  
Vol 14 (1) ◽  
pp. 77
Author(s):  
Fatriani Fatriani ◽  
Sunardi Sunardi ◽  
Arfianti Arfianti
Keyword(s):  
Renewable Energy ◽  
Moisture Content ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Acacia Mangium ◽  
Energy Sources ◽  
Wood Pellet ◽  
Human Needs ◽  
Melaleuca Cajuputi ◽  
German Standard

The amount of fossil fuels is getting less and less daily, so to meet the human needs it needs to find alternative renewable energy sources, one of which comes from a plant (wood) known as wood pellet. The purpose of this study was to analyze the water content, density, and ash wood pellet ash powder of sawn galam and acacia. The moisture content produced by wood pellet meets Indonesian wood pellet standart (SNI 80212014), Germany (DIN 51371) and Austria (ONORM M 7135) The resulting density meets the German standard (DIN 51371) and Austria (ONORM M 7135). which fulfill the standard wood pellet from Indonesia (SNI 8021: 2014) and Germany (DIN 51371).

SIFAT FISIK DAN KIMIA WOOD PELLET DARI LIMBAH INDUSTRI PERKAYUAN SEBAGAI SUMBER ENERGI ALTERNATIF

2014 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Effendi Arsad
Keyword(s):  
Moisture Content ◽  
Heating Temperature ◽  
Calorific Value ◽  
Ash Content ◽  
Heating Effect ◽  
Wood Pellets ◽  
Wood Pellet ◽  
Waste Wood ◽  
Industrial Processing ◽  
Higher Temperature

Carakteristic physical and chemistry of Wood pellet from Industrial Disposal of Wood as Sources  Energy Alternatif The research to gaved for physical and chemistry of Wood pellet from Industrial. Processing approximately 12%, sawdust dried to moisture content of  sieved that is size of 15 mesh, 25 mesh and 35 mesh. Heating temperature were 60 0C and 110 0C. Moisture content of flawer wood pellet 4,46% - 9,95%, acacia wood pellet were 4.38% - 7.52% and tarap wood pellet were  4.60% - 9.98%. Density of flawer  wood pellet  were 0.51 - 0.78, acacia wood pellet were 0.61 - 0.78 and tarap wood pellet were   0.56 - 0.71, ash content of wood  flawer  from 0.87 - 2.04%, acacia 0.54 - 0.94% and ash content of  tarap wood 1.71 - 2.05%. Calorific value of wood pellets flawers wood 3921,12 - 4150,19 cal/g, acacia wood 4022,29 - 4254,91 cal/g and tarap wood  3920,13 - 4125,28 cal/g. The higher temperature of the heating effect on reality the reduction of water and the weight of ash wood pellets  while it was increasing calorific value.Keywords: waste wood, flawers wood, acacia wood, tarap wood, wood pellet

Preparation and Standardization of a Stable AHF Plasma

1968 ◽  
Vol 19 (03/04) ◽  
pp. 423-429 ◽  
Author(s):  
G. M Thelin ◽  
Keyword(s):  
Moisture Content ◽  
Primary Standard ◽  
Healthy Male ◽  
Healthy Donors ◽  
Fresh Plasma

SummaryA stable, lyophilized AHF reference plasma has been prepared from pooled plasma from at least 50 normal healthy donors and standardized against a primary standard of fresh plasma from 20 healthy male donors aged 20 to 40. Average AHF potency of a typical lot is 98.8%, and moisture content is less than 0.5%. Under storage at -25° C, this AHF reference plasma is stable for at least 18 months. It has been used in several major coagulation laboratories, and has given consistently satisfactory and reproducible results in AHF assays.

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