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similar, but were both larger than that of generating high 4. Conclusions
propionic acid concentration. When the metabolites
concentration increased from 50 to 300 mM, the inhibitory The generating biohydrogen from co-digestion of
effects of high concentration of propionic acid and butyric SLS and POME was successfully achieved. Optimum
acid on the ability of mixed cultures to degrade substrate mixing ratio of SLS to POME was 75:25 (%v/v) with
were similar, but were both larger than that of acetic acid. hydrogen production yield of 35.0±1.2 mL H /g-COD .
2
added
Fig. 5 It can be concluded that POME plays an important role in
improving SLS dark fermentation for hydrogen production.

Figure 5. Soluble metabolites obtained at different mixing ratio of SLS to POME.

5. References

(1) Jianzheng L, Nanqi R, Baikun L, Zhi Q, Junguo H. (4) Luo G, Xie L, Zou Z, Wang W, Zhou Q and Shim
Anaerobic biohydrogen production from monosac- H. Anaerobic treatment of cassava stillage for hy-
charides by a mixed microbial community culture. drogen and methane production in continuously
Bioresource Technology. 2008; 99(14):6528–6537. stirred tank reactor (CSTR) under high organic load-
(2) Arooj MF, Han SK, Kim SH, Kim DH, Shin HS. ing rate (OLR). International Journal of Hydrogen
Continuous biohydrogen production in a CSTR us- Energy. 2010; 35(21):11733-11737.
ing starch as a substrate. International Journal of (5) Fang C, Boe K and Angelidaki I. Biogas production
Hydrogen Energy. 2008; 33(13):3289–3294. from potato-juice, a by-product from potato-starch
(3) Fang HHP, Li C and Zhang T. Acidophilic processing, in upflow anaerobic sludge blanket

biohydrogen production from rice slurry. Interna- (UASB) and expanded granular sludge bed (EGSB)
tional Journal of Hydrogen Energy. 2006; reactors. Bioresource Technology. 2010;
31(6):683–692. 102(10):5734–5741.