碩士 / 國立臺灣大學 / 生物產業機電工程學研究所 / 99 / In this study, experiments of biohydrogen production through anaerobic fermentation with swine wastewater and synthetic wastewater as substrate, were conducted using heat-pretreated digested sludge as seeding bacteria under mesophilic conditions. The experiments in this study could be divided into three parts. First, to examine the metabolism and growth activity of seeding sludge, the synthetic wastewater was used as substrate and had two sets of test: different organic loading rate (4, 6, 8, 10, 12, 16, 20 g COD/L/d) fermentation test, and the dynamic change of the hydrogen production test for every two hours under organic loading rates of 4 and 8 g COD/L/d. Second, to evaluate the effect of using real swine wastewater, two tests were conducted: real swine wastewater as the single substrate, and co-fermentation with swine wastewater and synthetic wastewater. Third, hydrogen production was operated semi-continuously, 2.5 L synthetic wastewater (2.5 g COD/L) was used as substrate and mixed with 1.5 L seeding sludge. The HRT was operated at 24 hours and the experiment duration time was 102 hours.
The experimental results showed that, in different organic loading rate fermentation test, the maximum accumulated hydrogen yield of 134 mL H2/g VSadd and a maximum hydrogen content of 41.2% were obtained at the organic loading rate of 12 g COD/L/d when using synthetic wastewater. In the dynamic change of hydrogen production test, the beginning 0~6 hours was observed as lag phase, and the hydrogen produced mostly during 6~16 hours. In real swine wastewater fermentation test of the second part, the maximum hydrogen content of 9.9% with the accumulated hydrogen yield of 4 mL H2/g VSadd were obtained when using swine wastewater as the single substrate, the hydrogen yield was about 42.1% of that using the synthetic wastewater at the same concentration. In co-fermentation test, the optimal hydrogen production was found at a mixing ratio of 1:3 (swine wastewater to synthetic wastewater). The hydrogen yield of 48 mL H2/g VSadd was about 1.5 times that of using only synthetic wastewater.
In semi-continuous operation test of the third part, about half of the cumulated hydrogen produced was found in beginning 30 hours. The hydrogen content observed was between 9.2% and 23.5%, and a maximum hydrogen production rate of 21 mL/hr was achieved. At the end of experiment, the observed hydrogen yield was 18 mL H2/g VSadd.
| Identifer | oai:union.ndltd.org:TW/099NTU05415155 |
| Date | January 2011 |
| Creators | Yu-De Huang, 黃育德 |
| Contributors | 周楚洋 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 37 |
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