Scope of study appropriate to prepare the charcoal activated carbon from sawdust rubberwood stimulation with phosphoric acid, which is the ratio of 1.0, 1.5, and education 2.0. Study of temperature that is used to stimulate the study of 400° c and 500° c and up to the time that it takes to stimulate is 30, 45, 50, and 90 minutes from the experiments. The activated charcoal is found that is prepared from preliminary heating at temperature 200° c. 15 minutes at a temperature of 500° c is laeokratun time 45 min and the ratio between the sawdust with phosphoric acid, iodine value 1.5 product number: 1,096 surface area of 1, 496m ^ 2/g and percent of the product is equal to 35% The scope of the trial production of activated charcoal from the rubber tree, comparing sawdust to absorb the color from all three methods.How raekkratun acid, phosphoric acid, patchouli, สอัตรา per section. At a temperature of 400° c laeokratun 0.45 1 hour songkratun method using steam at the ratio of acid is 0.45, followed by stimulation with steam at a temperature of 800° c for 1 hour of steam flow rate of 5 ml/min.Has the surface area is equal to the 822, 1,092 m ^ 2/g, and 945? Mate ethylene adsorption value nabun is equal to 255,255 and 375. Iodine adsorption value equals 835,765, and 1, 052, respectively.
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