Acetate as a carbon source for hydrogen production by photosynthetic bacteria
Acetate as a carbon source for hydrogen production by photosynthetic bacteria
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DOI：
10.1016/s0168-1656(00)00368-0
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发表时间：
2001-01-23
影响因子：
4.1
通讯作者：
Wijffels, RH
中科院分区：
文献类型：
--
作者：
Barbosa, MJ;Rocha, JMS;Wijffels, RH
氢是化石燃料的清洁替代品。光合细菌通过厌氧依赖光的电子转移过程从有机化合物中产生氢。本研究研究了3株光合细菌（Rhodopseudomonas sp.， Rhodopseudomonas palustris和1株未鉴定菌株）从4种不同的短链有机酸（乳酸、苹果酸、乙酸和丁酸）中产氢的情况。以乙酸盐为电子供体，通过提供两种不同的光强，研究了光强对产氢的影响。比较了产氢率和光效率。红假单胞菌产生的H-2最高。该菌株在680 μ mol光子m(-2) s（-1）光强下的最大产氢率为25 ml h -2 l(-1) h(-1)，在43 μ mol光子m(-2) s（-1）光强下的最大光效为6.2%。此外，醋酸盐浓度从22 mM降低到11 mM，导致每个容器的氢释放量从214 ml H-2减少到27 ml H-2。(C) 2001 Elsevier Science B.V.版权所有
Hydrogen is a clean energy alternative to fossil fuels. Photosynthetic bacteria produce hydrogen from organic compounds by an anaerobic light-dependent electron transfer process. In the present study hydrogen production by three photosynthetic bacterial strains (Rhodopseudomonas sp., Rhodopseudomonas palustris and a non-identified strain), from four different short-chain organic acids (lactate, malate, acetate and butyrate) was investigated. The effect of light intensity on hydrogen production was also studied by supplying two different light intensities, using acetate as the electron donor. Hydrogen production rates and light efficiencies were compared. Rhodopseudomonas sp. produced the highest volume of H-2. This strain reached a maximum H-2 production rate of 25 ml H-2 l(-1) h(-1), under a light intensity of 680 mu mol photons m(-2) s(-1), and a maximum light efficiency of 6.2% under a light intensity of 43 pmol photons m(-2) s(-1). Furthermore, a decrease in acetate concentration from 22 to 11 mM resulted in a decrease in the hydrogen evolved from 214 to 27 ml H-2 per vessel. (C) 2001 Elsevier Science B.V. All rights reserved.