2. Organic matter deposits compatible with biohydrogen production

2.1 Sugar-rich substrates

Microbial species of the genus Clostridium sp. that produce hydrogen by fermentation have a high affinity for simple sugars. The most extensively studied synthetic substrates to date have been based on glucose and sucrose. More complex sugars have also been used, such as cellulose, starch, yeast effluents, rice distillery effluents, waste from industrial bioethanol production, vinasses, molasses, glycerol-rich effluents, etc. Generally speaking, the richer the substrate is in easily accessible sugars or glycerol, the more suitable it is for fermentative hydrogen production.

Today, there is growing interest in the use of agricultural residues, as they are abundant, cheap and easily biodegradable organic matter, with the exception...