Pengaruh Kadar Air Terhadap Kualitas Pelet Kayu Dari Serbuk Gergajian Kayu Jabon Dan Ketapang

Abstract

In the last few years, wood pellet demand has increased globally for residential purposes. In term of standard quality, wood pellet for residential purposes are tighter than industrial purposes. The wood pellet quality parameters are moisture changes in biomass, impacts on bulk density, and mechanical durability. This paper analyzes the effect of biomass moisture content (MC) into the quality of wood pellet made from jabon and ketapang sawdust to meet quality standard of ISO 17225-2. The pellet was grouped into three, based on MCs, i.e. <10% (air-dry), 15% and 20%. The sawdust was then pressed at 464.52 kg/cm 2 , 150°C for 10 minutes. Analysis of variance (ANOVA) was conducted by Tukey and Homogenity tests on results. The optimum wood pellet quality was assessed using scoring method. Results showed that wood pellet moisture content significantly increased pellet's durability and density. However, greater moisture content reduces volatile matter, calorific value, sulphur, and nitrogen content of the pellet. Pellets made from jabon and ketapang meet the wood pellet standard's thresholds of ISO 17225-2 for grade A1 and B. Both wood pellets were high in quality and suitable for non-industrial and residential purposes. Based on the scoring, the best wood pellets were made from jabon's sawdust at 20% moisture content and ketapang's sawdust at 15% moisture content. The pellets contained relatively high calorific value, low ash content, sulphur, nitrogen and metals, which meet wood pellet's requirement for residential use with less smoke and combustion residue.

Applications of Local Microorganism (MOL) in The Processing of Waste Leaves and Twig with On Site Solid Waste Processing Technology (TOSS)

“…Lab-based calorific value tests show that variation A has the highest value, while variation K has the lowest, primarily due to the lower moisture content in variation A, leading to a higher calorific value. An augmented calorific value has the potential to expedite thermal release during fuel combustion, subsequently conserving fuel consumption [13]. Although all variations adhere solely to class 3 quality standards, variation A nearly satisfies the stipulated criteria for class 2 quality classification.…”

“…The K variation exhibits the most substantial volatile content, specifically quantifying at 69.33 ± 6.66%. Elevated levels of volatility can pose health risks due to the potential escalation of carbon monoxide (CO) gas concentrations [13]. Conversely, variations A and D display the least volatile content, both registering an equivalent value of 65.00 ± 1%.…”

Effects of Torrefaction Temperature on the Characteristics of Betung (Dendrocalamus asper) Bamboo Pellets

“…The MC will greatly affect the characteristics of the betung bamboo pellets. MC that is too high will cause the pellets to be susceptible to microorganisms and fungi so that the pellets will easily expand in the distribution and storage process (Lestari et al, 2019).…”

Pelletizing of Various Municipal Solid Waste: Effect of Hardness and Density into Caloric Value

“…On the basis of the study results, it can be concluded that the addition of the garden waste mixture in the pellets can affect the decrease in density. The garden water content is relatively smaller so that when the pellet is pressed, the particles become easily pressed, which results in reduced (Lestari et al, 2019) conducted density testing of sawdust pellets for Jabon and Ketapang wood, producing an average density value ranging from 976-1072 kg/m 3 . Compared to this study, the average density value was higher, which shows better pellet quality.…”