Increased energy production from sucrose by controlled hydrogen-producing fermentation followed by methanogenic fermentation

ABSTRACT

To improve the low energy production efficiency of fermentative hydrogen production (FHP) and fermentative methane production (FMP), the two types of fermentation were effectively combined in this study. Using sucrose as feedstock, both successive fermentative production of hydrogen followed by methane (SFPHM) and successive fermentative production of methane followed by hydrogen (SFPMH) were performed to improve the energy production efficiency of the overall anaerobic process. The results showed that the energy conversion efficiency of SFPHM was 79.85% whereas that of SFPMH was only 43.12%. Therefore, SFPHM can significantly improve the energy production efficiency of traditional anaerobic biological treatment.

KEYWORDS:

• Anaerobic biological treatment
• energy production efficiency
• fermentative hydrogen production
• methanogenic fermentation
• successive fermentation

Funding

This study was supported by the National Natural Science Foundation of China (51366015), the Yunnan Provincial Sciences and Technology Platform Promotion Plan (2013DH041), the Specialized Research Fund for Doctoral Program of Universities (20135303110001), Yunnan Province Key Fund of Applied Basic Research (2014FA030), Open Fund from Yunnan Key Laboratory of Rural Energy Engineering (2015KF07), and the Doctoral Candidate Academic Newcomer Award of Yunnan Province.

Additional information

Funding

This study was supported by the National Natural Science Foundation of China (51366015), the Yunnan Provincial Sciences and Technology Platform Promotion Plan (2013DH041), the Specialized Research Fund for Doctoral Program of Universities (20135303110001), Yunnan Province Key Fund of Applied Basic Research (2014FA030), Open Fund from Yunnan Key Laboratory of Rural Energy Engineering (2015KF07), and the Doctoral Candidate Academic Newcomer Award of Yunnan Province.