02100nam a22002177a 4500 OSt 20250403113152.0 250403b |||||||| |||| 00| 0 eng d NVSU Babida, Karen Joy C. Fabrication and performance evaluation of biogas purification system/ Karen Joy C. Babida, Jenny Rose T. Gaudia, Kimberly T. Himmiwat and Kheryl Lou G. Mantaha Bayombong: Nueva Vizcaya State University, Nueva Vizcaya State University, 2023. xix, 47 leaves : illustrations, photos ; 28 cm. The study was conducted to attain the following objectives: a) to fabricate a biogas purification system, b) to evaluate the performance of the purification system in terms of time in boiling 500 ml of water using the purified biogas gas, and c) to perform a simple cost analysis. The raw biogas entered its first filtration, which was the water scrubber for the removal of CO2 and trace of H₂S. The second stage was for further elimination of H₂S and the filter was filled with an iron sponge. The third stage was filled with silica gel, a substance which had very effective characteristics of absorbing water vapor. The last filtration contained activated carbon and was designed for further elimination of CO2 and H₂S. The average time for boiling 500 ml of water was 2.37 minutes for raw biogas and 1.34 minutes for purified biogas. The computed criterion (tc) of 16.13 (tab 0.052.365 and tab 0.013.449) shows that there is a highly significant difference between the raw biogas and purified biogas. The computed net income derived from the biogas purification system was Php 3029.02 per year and can recover its initial investment within 2.40 year. Thesis (Bachelor of Science in Agricultural and Biosystems Engineering - AB Structure and Environmental Engineering) Includes bibliographical references and appendices Gaudia, Jenny Rose T., author. Himmiwat, Kimberly T., author. Mantaha, Kheryl Lou G., author. ddc U 0 803 803 0 0 ddc 0 0 NVSUBAY NVSUBAY GR 2025-04-03 Donation 0 U (BSABE) B114f 2023 U2355 2025-04-03 11:32:23 2025-04-03 U