The Influence of Different Ratio of Goat Dung and Lontar Shells (Borassus Flabellifer Linn) Charcoal on the Biochar Briquettes Properties

Research goals was to determine the physico-chemical and burning propersties of biochar briquettes with different ratios between goat dung and lontar shell charcoal. Material used were goat dung, lontar shell, tapioca as binder and water. The equipment were kiln drum (pyrolysis drum), grinding machine, hydraulic pressor, briquette stove, infrared digital thermometer, digital hanging scales, digital sitting scales. Variables measured were density, moisture, ash, volatile matter, fixed carbon, calorific value, burning rate and burning resistance. Analysis of variance was applied to determine the influence of treatment on the variables measured. Result of analysis showed that treatment had a very significant (P<.01) on moisture, ash, volatile matter, fixed carbon, calorific value, burning rate and burning resistance, but no significant (P>.05) on density of biochar briquettes. More proportion of goat dung charcoal generated the biochar briquettes with properties more ash content, lower fixed carbon, higher volatile matter, reduced calorific value, faster burning rate, shorter burning resistance. It can be concluded that the physico-chemical and burning properties of the biochar briquettes generated in this study did not meet the standards according to SNI 01-6235-2000. In this case, however, the best ratio is 25% of goat dung charcoal and 75% of lontar shell charcoal.