Bioethanol production from industrial algae waste
No Thumbnail Available
Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
Waste management
Abstract
This paper presents a study carried out to determine the
feasibility to obtain bioethanol from an industrial algae waste. The
influence of some parameters on acid hydrolysis was studied. The results
indicated that the overall hydrolysis ability is a function of the
combined action of acid concentration, temperature and reaction time. The
hydrolysates with higher amount of reducing sugars were used for
ethanolic fermentation using S. Cerevisiae. The highest bioethanol yield
11.6 gEtOH/galgae was obtained at 70 min, a sulphuric acid concentration
of 9% wt. and acid/dried algae ratio of 7. The present study showed that
the industrial waste of Euchema Spinosum contains carbohydrates that can
be converted into bioethanol with an efficiency of 75%. Moreover, the
potential of the residue after acid hydrolysis process as sustainable
solid fuel regarding its properties was analysed. The results were
compared with those obtained from the literature and discussed according
to international standards.