TY - JFULL AU - W. Intagun and T. Khamdaeng and P. Prom-ngarm and N. Panyoyai PY - 2018/12/ TI - Effect of Core Puncture Diameter on Bio-Char Kiln Efficiency T2 - International Journal of Biotechnology and Bioengineering SP - 434 EP - 439 VL - 12 SN - 1307-6892 UR - https://publications.waset.org/pdf/10009773 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 143, 2018 N2 - Biochar has been used as a soil amendment since it has high porous structure and has proper nutrients and chemical properties for plants. Product yields produced from biochar kiln are dependent on process parameters and kiln types used. The objective of this research is to investigate the effect of core puncture diameter on biochar kiln efficiency, i.e., yields of biochar and produced gas. Corncobs were used as raw material to produce biochar. Briquettes from agricultural wastes were used as fuel. Each treatment was performed by changing the core puncture diameter. From the experiment, it is revealed that the yield of biochar at the core puncture diameter of 3.18 mm, 4.76 mm, and 6.35 mm was 10.62 wt. %, 24.12 wt. %, and 12.24 wt. %, of total solid yields, respectively. The yield of produced gas increased with increasing the core puncture diameter. The maximum percentage by weight of the yield of produced gas was 81.53 wt. % which was found at the core puncture diameter of 6.35 mm. The core puncture diameter was furthermore found to affect the temperature distribution inside the kiln and its thermal efficiency. In conclusion, the high efficient biochar kiln can be designed and constructed by using the proper core puncture diameter. ER -