Reducing the Ash Content of Gliricidia (Gliricidia sepium) and Calliandra (Calliandra calothyrsus) Wood Pellets through Debarking and Mixing with Acacia (Acacia mangium) and Pines (Pinus merkusii) Wood

Abstract The use of renewable energy from wood biomass which is processed in the form pellet are environmentally friendly, sustainable and also to reduce greenhouse effect environmental pollution. main problem quality a Gliricidia Calliandra ash content (1%) has not fulfilled Europe standard requirement A1-EN14961 (ash ≤ 0.7%) yet fulfills A2-EN14961 standard. effort lower by debarking mixing with other variety increase international market. aim this research discover pine acacia toward pellet, especially content. result shows for consecutively 0.36% 0.71% have EN 14961 (max. potency be mixer raw material 1.19%) 1.05%). Debarking method can 36.1% (from 1.19% 0.76%) 18.1% 1.05% 0.86%) almost fulfill A1 (EN max 0.7%). Wood Gliricidia-Calliandra-Pine (1:1:1) 0.89% 20.5% decreasing rate, Gliricidia-Calliandra-Acacia 1.17% 2.7% rate. Method combination wood, gliricidia calliandra generate suitable 0.7% [1].