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Enhancing continuous photo‐H 2 production using optical fiber for biofilm formation
Author(s) -
Zhang Chuan,
Fu Jing,
Wang BaoWen,
Liu XinYang,
Cheng Min,
Zhang QuanGuo
Publication year - 2015
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.12235
Subject(s) - hydrogen production , monochromatic color , materials science , light intensity , biofilm , bioreactor , light energy , hydrogen , fiber , light source , light guide , optical fiber , biohydrogen , optics , optoelectronics , chemistry , bacteria , physics , biology , composite material , organic chemistry , genetics
To promote continuous phototrphic H 2 production with photosynthetic bacteria, an innovative annular optical fiber illuminating bioreactor for both biofilm formation and light transmission was developed. Steady biofilm of indigenous photosynthetic bacteria Rhodopseudomonas palustris was successfully obtained on the surface of side‐glowing optical fiber. With the sufficient light supply and uniform light distribution, strategies on improvement of continuous hydrogen production and light energy conversion were then investigated. Hydrogen production rate of 0.85 mmol g −1 h −1 and Light conversion efficiency of 47.1% were attained under operating conditions of monochromatic light illumination at 530 nm with light intensity of 19.5 μmol photos m −2 s −1 , hydraulic retention time of 5 h and initial pH of 7.0. © 2015 American Institute of Chemical Engineers Environ Prog, 35: 455–460, 2016