Analytical procedures, data reporting and selected reference values for biological hydrogen production

Biological hydrogen production is under extensive investigation worldwide and has attracted the interest of researchers in a number disciplines including fundamental sciences, e.g., microbiology biochemistry, applied chemical engineering. While multidisciplinary approaches being used have been very fruitful terms advancing biohydrogen research, data sets rapidly accumulating published literature are often difficult to compare due use different units, or incomplete description experimental conditions. Here we review some common methods that various aspects research suggest ways reporting enable conversion other units comparison with similar carried out elsewhere. In addition, compiled one place abbreviations definitions as well useful physical/chemical constants laws pertaining hydrogen. Unlike reviews examine results specific studies, describe systems deployed them, here provide for first time detailed listing up-to-date measurement quantification production. Useful factors physical also given.