The main purpose of this work was to study the potential of
Spirogyra sp. to produce hydrogen and pigments, including
leftovers valorization, and the evaluation of the energy requirements
and GHG emissions during the whole process. The use of
electrocoagulation before centrifugation, and solar drying were
assessed and compared with conventional harvesting and
dewatering procedures, respectively. The economic viability of
the pigment extraction and bioH2 production is discussed in terms
of the operational costs vs the actual retail value of the biorefinery
products.