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Effect of Goat Dung, Saboak and Corn Cobs Charcoal Mixture on the Physicochemical Properties of Biochar Briquettes

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The experiment goals to investigate the physicochemical properties of biochar briquette mixed of goat dung, saboak shell and corn cob charcoal. Research used a completely randomized design with 4 different treatments were: P1 = 25% of goat dung + 75% saboak shell charcoal; P2 = 25% of goat dung + 50% saboak shell + 25% corn cob charcoal; P3 = 25% of goat dung + 25% saboak shell + 50% corn cobs charcoal; P4 =25% of goat dung + 75% corn cobs charcoal. Variables measured included yield, density, moisture, ash, calorific value, volatille matter and fixed carbon. Data were analyzed according to the statistic analysis procedure. The mean values obtained were yield 57.54%; density 0.62 g/cm3; moisture 4.67%; ash 16.93%; calorific value 5198.75 cal/g; volatile matter 25.18%; fixed carbon 53.23%. The results of variance analysis showed that the treatment had a very significant effect (P<0.01) on density and calorific value but not significant (P>0.05) on yield, moisture, ash, volatile matter and fixed carbon. It can be concluded that using of corn cobs as substitute of saboak shell ini briquettes making blend of goat manure  can be improve the calorific value, with  similar ini yield, moisture, ash, volatile matter and fixed carbon. The best characteristic of briquettes find out  in mixing of 25% goat manure + 25% saboak shell + 50% corn cobs.

Physico-chemical Properties of Biocharcoal Briquettes Blend of Goat Manure Charcoal, Saboak Shell and Lamtoro Twigs

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The study aimed to determine the effect of blend of goat manure charcoal, saboak shell and lamtoro twigs on the physical and chemical properties of biocharcoal briquettes. The completely randomised design with 4 treatments and 4 replications was applied in this study. Those treatments were, P1 = 25% goat manure charcoal + 75% saboak shell without lamtoro twigs, P2 = 25% goat manure charcoal + 50% saboak shell + 25% lamtoro twigs, P3 = 25% goat manure charcoal + 25% saboak shell + 50% lamtoro twigs and P4 = 25% goat manure charcoal without saboak shell + 75% lamtoro twigs. The variables studied were: yield, density, moisture content, ash content, calorific value, volatile matter and fixed carbon. Data were analysed according to the analysis of variance procedure. The mean values obtained were: 55.20% yield; 0.56 g/cm3 density; 3.41% moisture content; 14.80% ash content; 5195.05 cal/g calorific value; 25.54% volatile matter; 56.25% fixed carbon. Statistical analysis showed the treatment had a very significant effect (P<0.01) on yield, density, moisture content, ash content and fixed carbon, but not significant (P>0.05) on calorific value and volatile matter. It can be concluded that blend of goat manure charcoal, saboak shell and lamtoro twigs with an increasing proportion of lamtoro twig as substitute on saboak shell produces biocharcoal briquettes with good moisture, density and calorific value that has fulfilled the requirements standardised in SNI 01-6235-2000, while other physicochemical properties such as fixed carbon, volatile matter ash content   not meet these standards.

Physico-chemical Characteristics of Biochar Briquettes Blend of Goat Manure Charcoal, Saboak Shells and Rice Husk

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The study aimed to determine the effect of goat manure charcoal mixture, saboak shell and rice husk on the physico-chemical characteristics of biocharcoal briquettes. The completely randomized design with 4 treatments and 4 replicates was applied. Those treatments were P1 = 25% goat manure + 75% saboak shell without rice husk, P2 = 25% goat manure + 50% saboak shell + 25% rice husk, P3 = 25% goat manure + 25% saboak shell + 50% rice husk, P4 = 25% goat manure + 75% rice husk without saboak shell. Variables measured: yield, density, moisture content, ash content, volatile matter, fixed carbon and calorific value. The average data obtained were: yield 58.94%; density 0.65 g/cm3; moisture 2.42%; ash 27.41%; volatile matter 26.58%; fixed carbon 43.59%. and calorific value 4086.7 cal/ g; Statistical analysis showed that treatment had a very significant effect (P<0.01) on ash content and fixed carbon; significant effect (P<0.05) on moisture content and calorific value; and not significant (P>0.05) on yield, density and volatile matter. It was concluded that increasing the proportion of rice husk charcoal in the mixture with goat manure and saboak shell produced biochar briquettes with characteristics decreased of moisture content, fixed carbon and calorific value, increased of ash content while yield, density and volatile matter tended to be the same.