What is are the major differences between the process of ldquo Dark fermentation rdquo and ldquo Pho...........

Explanation:

Fermentation is a metabolic process that converts sugar to acids, gases, or alcohol.
Dark fermentation is the fermentative conversion of organic substrate to biohydrogen. It is a complex process manifested by diverse groups of bacteria.
Biohydrogen is defined as hydrogen produced biologically, most commonly by algae, bacteria and archaea. Biohydrogen is a potential biofuel obtainable from both cultivation and from waste organic materials.
Dark fermentation differs from photofermentation in that it proceeds without the presence of light. Utilization of wastewater as a potential substrate for biohydrogen production has been drawing considerable interest in recent years especially in the dark fermentation process