BioChem - DOS

Effect of organic loading rate on continuous hydrogen production from food waste in submerged anaerobic membrane bioreactor

International journal of hydrogen energy

Lee, D.Y.; Xu, K.Q.; Kobayashi, T.; Li, Y.Y.; Inamori, Y.

The characteristics of hydrogen fermentation in a membrane bioreactor (HF-MBR) fed with food waste were investigated at thermophilic condition. The HF-MBR was operated at three different organic loading rates (OLRs) of 70.2, 89.4 and 125.4 kg-COD/m<SUP>3</SUP>/day. Biogas production rate increased from 22.4 to 32.8 and 62.5 l/day with OLR. The maximum Hydrogen yield and production rate were 111.1 mL-H<SUB>2</SUB>/g-VS <SUB>added</SUB> and 10.7 l-H<SUB>2</SUB>/L/day at an OLR of 125.4 kg-COD/m<SUP>3</SUP>/day. The total carbohydrate degradation was better than 96% throughout the experimental runs. Continuous H<SUB>2</SUB> production from food waste with CH<SUB>4</SUB>-free biogas was successfully sustained in the HF-MBR for 90 days. The microbial community was dominated by Clostridium sp. strain Z6. The H<SUB>2</SUB> production was significantly improved by shortening the retention time and increasing the OLRs. The HF-MBR showed an H<SUB>2</SUB> production capacity at the high OLRs due to its higher cell retention.

2014

Pergamon Press ; Elsevier Science Ltd

0360-3199

1879-3487

39

30

pp.16863-16871

10.1016/j.ijhydene.2014.08.022

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART70346528

Membrane bioreactor; Hydrogen production; Organic loading rate; Food waste