有機廢棄物微生物電解電池之最佳化產氫研究

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有機廢棄物微生物電解電池之最佳化產氫研究

Optimgation study of hydrogen production with organic waste microbial electrolysis cells

蘇天啟 , Masters　　Advisor：羅煌木　　

繁體中文

鹼度揮發酸；甲烷；氫氣；微生物電解電池； MEA ； PEM ； Alkalinity volatile acid ； Methane ； Hydrogen ； Microbial electrolysis cell ； MEA ； PEM

Abstract │ Reference (52) │ Altmetrics

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Since the industrial revolution promotes rapid growth of the economy, along with fast energy consumption, and 80 % of the world's energy comes from fossil fuels, causing the concentration of carbon dioxide in the air increases constantly and generating problems of global warming, climate change and etc. Therefore, to seek alternative energy that can solve the problem of energy demand and research and application of reducing carbon dioxide emissions at the same time has become a major issue. Among all kinds of alternative energy, hydrogen is regarded as the cleanest energy, mainly because the hydrogen has sustainable supply and features such as high heat, and it doesn’t damage the environment. It can be obtained from biomass conversion,using the metabolic mechanism of microbial dark fermentation to decompose organic matter into carbon dioxide, and meanwhile obtaining high purity hydrogen.
This study has research and discussion on using organic wastes (municipal solid waste, urban sludge and kitchen waste) to conduct microbial electrolysis cell substrate to get the optimal efficiency of hydrogen production.
This study analyzes that the anaerobic sludge can separate advantage bacteria group of hydrogen production by thermal treatment or acid treatment, inhibits Methanogenic bacteria group, in order to increase the proportion of hydrogen gas composition. Cultivating synthetic organic waste substrate with anaerobic sludge which has thermal treatment（100℃, 1hour）to produce gas daily, when the gas production rate is stable, reconfigure synthetic waste which is similar to human life’s waste to cultivate, and then conduct experiment of different electrode plates of microbial electrolysis cell with the best gas production voltage of 0.6V（Liang et al.,2011）which the literature states, to test the hydrogen production rate and observe daily gas production rate, anaerobic basic monitoring parameters (pH, ORP, EC, SAL) and anaerobic parameter analysis (COD, TS/VS, alkalinity volatile acid).
The working space of single chamber microbial electrolysis cell is 4 liters. For the feed rate, in accordance with the solid retention time (SRT), it takes 20 days to compound 200 mL d-1waste substrate and then analyze each parameter of the discharging digestion product. The result indicates that under the control of different electrodes of MEA, PEM and etc., its gas production rate is 36500 mL and 28000 mL respectively, and the overall hydrogen concentration increases significantly due to increasing voltage. Before increasing voltage, the highest hydrogen content of MEA is 27.408%, after increasing voltage, the highest hydrogen content is 52.7805%. Before increasing voltage, the highest hydrogen content of PEM is 27.3564%, after increasing voltage, the highest hydrogen content is 37.4553%.

Reference ( 52 ) 〈TOP〉

1.Cheng, S. and Logan. B. E., “High hydrogen production rate of microbial electrolysis cell （MEC） with reduced electrode spacing,” Bioresource Technology, Vol. 102, pp. 3571–3574 （2011）.
連結：
2.Das, D. and Veziroglu T. N., “Hydrogen production by biological processes: a survey of literature,” International Journal of Hydrogen Energy, Vol. 26, pp. 13–28 （2001）.
連結：
3.Folusho, F.A., Kim, K.Y., Chae, K.J., Choi, M.J., Kim, S.Y., Chang, I.S. and Kim, I.S., “Study of hydrogen production in light assisted microbial electrolysis cell operated with dye sensitized solar cell,” International Journal of Hydrogen Energy Vol. 34, pp. 9297–9304 （2009）.
連結：
4.Kim, M., Yang, Y., Morikawa-Sakura, M.S., Wang, Q., Lee, M.V., Lee, D.Y., Feng, C., Zhou, Y. and Zhang, Z., “Hydrogen production by anaerobic co-digestion of rice straw and sewage sludge,” International Journal of Hydrogen Energy, Vol. 37, pp. 3142–3149 （2012）.
連結：
5.Peter, L.M., Duffy, N.W., Wang, R.L. and Wijayantha, K.G.U., “Transport and interfacial transfer of electrons in dye-sensitized nanocrystalline solar cells,” Journal of Electroanalytical Chemistry 524–525 （2002）.
連結：

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