Development of biochar using non-direct firing system from gaharu-chemical properties

Biochar production is used as part of modern agenda for agricultural used and to offset some greenhouse gas emissions. The experiment conducted by using different pyrolysis temperature to determine chemical properties of biochar. Under elemental analysis, TGA and FTIR analysis, it will characterized the biochar produced at 400, 500 and 600°C. Biochars derived from wood exhibit a high carbon content especially when pyrolysis temperature increased. The observation made through elemental analysis proved that carbon content increased while O/C and H/C decrease because of evaporating volatile matter in the process. TGA analysis provided that the weight of the sample is indirectly proportional to the pyrolysis temperature. Lastly, the functional group for each of the sample will be decided through FTIR analysis. The results demonstrated that production temperature acted as predominant factor which determined the properties of biochars.