TY - JFULL AU - Lady Marianne E. Polinga and Candy C. Mercado and Camilo A. Polinga PY - 2013/8/ TI - Formation and Evaluation of Lahar/HDPE Hybrid Composite as a Structural Material for Household Biogas Digester T2 - International Journal of Materials and Metallurgical Engineering SP - 486 EP - 490 VL - 7 SN - 1307-6892 UR - https://publications.waset.org/pdf/16251 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 79, 2013 N2 - This study was an investigation on the suitability of Lahar/HDPE composite as a primary material for low-cost smallscale biogas digesters. While sources of raw materials for biogas are abundant in the Philippines, cost of the technology has made the widespread utilization of this resource an indefinite proposition. Aside from capital economics, another problem arises with space requirements of current digester designs. These problems may be simultaneously addressed by fabricating digesters on a smaller, household scale to reach a wider market, and to use materials that may accommodate optimization of overall design and fabrication cost without sacrificing operational efficiency. This study involved actual fabrication of the Lahar/HDPE composite at varying composition and geometry, subsequent mechanical and thermal characterization, and implementation of Statistical Analysis to find intrinsic relationships between variables. From the results, Lahar/HDPE composite was found to be feasible for use as digester material from both mechanical and economic standpoints.  ER -