The prospect of purple non-sulfur (PNS) photosynthetic bacteria for hydrogen production: The present state of the art
The prospect of purple non-sulfur (PNS) photosynthetic bacteria for hydrogen production: The present state of the art
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DOI：
10.1007/s11274-006-9190-9
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发表时间：
2007-01-01
影响因子：
4.1
通讯作者：
Das, Debabrata
中科院分区：
文献类型：
--
作者：
Basak, Nitai;Das, Debabrata
氢是未来的燃料，主要是由于其可回收性和无污染性。生物制氢过程在环境温度和大气压下操作，因此与热化学和电化学过程相比，能量密集度较低且更环保。生物制氢过程可以大致分为：光发酵和暗发酵。固氮酶和氢化酶在生物制氢过程中起着重要的作用。紫色非硫细菌（PNS）的光发酵是一个重要的研究领域，通过优化生长条件和固定化活性细胞可以显着提高生物制氢的总产量。本文综述了PNS细菌生物制氢的各种方法，并介绍了沿着几种最新进展。然而，合适的工艺参数，如碳和氮的比例，光照强度，生物反应器配置和接种物年龄可能会导致更高的产氢率使用PNS细菌。
Hydrogen is the fuel for the future, mainly due to its recyclability and nonpolluting nature. Biological hydrogen production processes are operated at ambient temperature and atmospheric pressures, thus are less energy intensive and more environmentally friendly as compared to thermochemical and electrochemical processes. Biohydrogen processes can be broadly classified as: photofermentation and dark fermentation. Two enzymes namely, nitrogenase and hydrogenase play an important role in biohydrogen production. Photofermentation by Purple Non-Sulfur bacteria (PNS) is a major field of research through which the overall yield for biological hydrogen production can be improved significantly by optimization of growth conditions and immobilization of active cells. The purpose of this paper is to review various processes of biohydrogen production using PNS bacteria along with several current developments. However, suitable process parameters such as carbon and nitrogen ratio, illumination intensity, bioreactor configuration and inoculum age may lead to higher yields of hydrogen generation using PNS bacteria.