An upflow anaerobic sludge bed (UASB) system with sludge immobilized on granular activated carbon was developed for fermentative hydrogen production continuously from herbal medicine wastewater at various organic loading rates (8–40 g chemical oxygen demand (COD) L−1 d−1). The maximum hydrogen production rate reached 10.0 (±0.17) mmol L−1 hr−1 at organic loading rate of 24 g COD L−1 d−1, which was 19.9% higher than that of suspended sludge system. The effluents of hydrogen fermentation were used for continuous methane production in the subsequent UASB system. At hydraulic retention time of 15 h, the maximum methane production rate of 5.49 (±0.03) mmol L−1 hr−1 was obtained. The total energy recovery rate by co-production of hydrogen and methane was evaluated to be 7.26 kJ L−1 hr−1.
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Research Article|
September 15 2015
Co-production of hydrogen and methane from herbal medicine wastewater by a combined UASB system with immobilized sludge (H2 production) and UASB system with suspended sludge (CH4 production)
Caiyu Sun;
Caiyu Sun
1Center for Ecological Research, Northeast Forestry University, Harbin 150040, China
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Ping Hao;
Ping Hao
2Management College, Ocean University of China, QingDao 266000, China
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Bida Qin;
Bida Qin
3School of Forestry, Northeast Forestry University, Harbin 150040, China
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Bing Wang;
Bing Wang
3School of Forestry, Northeast Forestry University, Harbin 150040, China
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Xueying Di;
Xueying Di
3School of Forestry, Northeast Forestry University, Harbin 150040, China
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Yongfeng Li
3School of Forestry, Northeast Forestry University, Harbin 150040, China
E-mail: dr_lyf@163.com
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Water Sci Technol (2016) 73 (1): 130–136.
Article history
Received:
March 25 2015
Accepted:
September 01 2015
Citation
Caiyu Sun, Ping Hao, Bida Qin, Bing Wang, Xueying Di, Yongfeng Li; Co-production of hydrogen and methane from herbal medicine wastewater by a combined UASB system with immobilized sludge (H2 production) and UASB system with suspended sludge (CH4 production). Water Sci Technol 8 January 2016; 73 (1): 130–136. doi: https://doi.org/10.2166/wst.2015.471
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