Biological hydrogen production from sugar beet molasses by agar immobilized R. capsulatus in a panel photobioreactor

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  1. 플라스틱
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논문

Biological hydrogen production from sugar beet molasses by agar immobilized R. capsulatus in a panel photobioreactor

학술지

International journal of hydrogen energy

저자명

Sagir, Emrah; Alipour, Siamak; Elkahlout, Kamal; Koku, Harun; Gunduz, Ufuk; Eroglu, Inci; Yucel, Meral

초록

Abstract Biohydrogen production from sugar beet molasses was investigated by using agar immobilized R. capsulatus YO3. A panel photobioreactor (1.4 L) was employed for a long-term hydrogen production in both indoor and outdoor conditions. The impact of several initial molasses concentrations on hydrogen production, yield and productivity were assessed. Indoor studies revealed that initial sucrose concentration in molasses should be kept below 20 mM to prevent inhibition of hydrogen production. The highest hydrogen productivity of 0.64 ± 0.06 mmol H2 L−1 h−1 and yield of 12.2 ± 1.5 mol H2/mol sucrose were obtained in indoors throughout 20 days of operation. For outdoors, hydrogen production continued for 40 days including consecutive 10 rounds under natural outdoor conditions. In outdoor conditions, the maximum hydrogen productivity and yield were 0.79 ± 0.04 mmol H2 L−1 h−1 and 5.2 ± 0.4 mol H2/mol sucrose respectively. These results indicate that the proposed system is promising for biohydrogen production from molasses at large-scale natural conditions. Highlights <UL> <LI> Hydrogen production from molasses by agar immobilized Rhodobacter capsulatus YO3. </LI> <LI> Long-term hydrogen production was carried out in indoors and outdoors. </LI> <LI> High sucrose concentration in molasses inhibits H2 production. </LI> <LI> Maximum hydrogen yield of 12.2 mol H2/mol sucrose was achieved in indoors. </LI> <LI> Maximum productivity of 0.79 mmol H2 L−1h−1 was achieved in outdoor conditions. </LI> </UL>

발행연도

2018

발행기관

Elsevier

ISSN

0360-3199

ISSN

1879-3487

권

호

페이지

pp.14987-14995