The study on utilization of Eucalyptus urophylla’s residue for energy Thailand | 19/03/2024

by LAKSAMEE  SUTTHIWILAIRATANA, PRAPASSORN  PAKART, KHWANRAPEE  SITTHEESAARD and WATCHARIN  SAEFUNG
Forestry Research and Developement Bureau, Royal Forest Department, Bangkok 10900, THAILAND

A study on utilization of Eucalyptus urophylla’s residue for energy by briquette and biogas production was conducted at Saraburi province. Charcoal briquettes from twig of E. urophylla were made by combining 2,000 g of fine charcoal with tapioca starch at 50, 100, 150 and    200 g.  The charcoal briquette made with 2,000 g fine charcoal and 100 g tapioca starch gave the best overall results, providing a work done value of 2.47, a burning rate value of 5.66 g/min, a heat utilization efficiency of 28.21 percent and a calorific value of 6,388.65 cal/g.  Charcoal briquettes from slab of E. urophylla were also made by combining 2,000 g of fine charcoal with tapioca starch at 50, 100, 150 and 200 g.  The charcoal briquette made with 2,000 g fine charcoal and 100 g tapioca starch also gave the best overall results, providing a work done value of 2.75, a burning rate value of 5.53 g/min, a heat utilization efficiency of 29.70 percent and a calorific value of 6,685.29 cal/g. The biogas production from leaf of E. urophylla could provide biogas about 28.36 cu.m./day.  The biogas’s components are methane 42.3 percent, carbon- dioxide 54.6 percent and oxygen 0.3 percent.