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Improvement in the Photobiological Hydrogen Production of Aggregated Chlorella by Dimethyl Sulfoxide
Author(s) -
Shu Lei,
Xiong Wei,
Shao Changyu,
Huang Tingting,
Duan Pengqiang,
Liu Kun,
Xu Xurong,
Ma Weimin,
Tang Ruikang
Publication year - 2018
Publication title -
chembiochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.05
H-Index - 126
eISSN - 1439-7633
pISSN - 1439-4227
DOI - 10.1002/cbic.201700637
Subject(s) - dimethyl sulfoxide , hydrogen peroxide , hydrogen production , chemistry , yield (engineering) , oxygen , cellular respiration , hydrogen , chlorella , aqueous solution , renewable energy , photochemistry , chemical engineering , materials science , biochemistry , organic chemistry , botany , algae , biology , ecology , engineering , metallurgy , mitochondrion
Photobiological hydrogen production plays a vital role in generating clean renewable energy owing to its low energy consumption and environmental friendliness. Although materials‐induced Chlorella aggregates have been developed to achieve sustained photobiological hydrogen production under normal aerobic conditions, the yield is relatively low and equals only 0.42 % of the light‐to‐H 2 energy‐conversion efficiency. Herein, we report that only 0.5 vol % dimethyl sulfoxide in an aqueous environment significantly enhances the H 2 yield produced by aggregated Chlorella , reaching 0.69 % of the light‐to‐H 2 energy‐conversion efficiency. This improvement can be attributed to an increase in the cellular respiration rate by dimethyl sulfoxide, which results in a decrease in the oxygen content inside the aggregates and, ultimately, to the activation of more hydrogenases. More generally, this strategy consists of a functional enhancement in organism–material hybrids by using small molecules.