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Biological and Photochemical Hydrogen

Processes that make hydrogen with microbes or light, including dark fermentation, photofermentation, photoelectrochemical cells, photocatalytic water splitting and artificial photosynthesis. A technology belongs here when its cited article describes a biological or light-driven route to hydrogen. These routes produce hydrogen with the help of bacteria or light rather than with heat or electricity alone, and they are studied as low-energy paths to a clean fuel. A technology is placed here by the biological or light-driven route the cited article describes.

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Biological and Photochemical Hydrogen
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Dark fermentation, Wikipedia
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Dark fermentation is the fermentative conversion of organic substrate to biohydrogen.
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Photofermentation - Wikipedia
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Photofermentation is the fermentative conversion of organic substrate to biohydrogen manifested by a diverse group of photosynthetic bacteria by a series of biochemical reactions involving three steps similar to anaerobic conversion.
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Wikipedia: Photoelectrochemical cell
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A "photoelectrochemical cell" is one of two distinct classes of device.
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Wikipedia: Photocatalytic water splitting
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Photocatalytic water splitting is a process that uses photocatalysis for the dissociation of water (H2O) into hydrogen (H2) and oxygen (O2).
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Artificial photosynthesis - Wikipedia
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Artificial photosynthesis is a chemical process that biomimics the natural process of photosynthesis.
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Microbial electrolysis cell, Wikipedia
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A microbial electrolysis cell (MEC) is a technology related to Microbial fuel cells (MFC).
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