Title:
Bio Evaluation of Integrated Production of Hydrogen, Fuels and Bio-Char from Chlamydomonas Reinhardtii
Author(s):
Torri, C., Samorì, C., Adamiano, A., Fabbri, D., Faraloni, C., Torzillo, G.
Document(s):
Paper
Abstract:
The exploitation of aquatic biomass for energetic purpose is a promising field of research. Chlamydomonas reinhardtii is a deeply investigated microalga able to convert sunlight into chemical energy by indirect photolysis under specific culture conditions, allowing the production of a hydrogen rich biogas and algal biomass as side-product. Besides the hydrogen production, a valorisation of “spent” side-products is a key point for the process optimization, for the maximization of process energetic yield and the reduction of photo-biogenic hydrogen prices. The aim of this work was to investigate the potential conversion of Chlamydomonas reinhardtii exhaust biomass to bio-diesel, pyrolysis oil and nitrogen rich charcoal (bio-char). Microalgal fats were obtained through a standard extraction (15% wlipids/wbiomass yield). Then, the extraction residue, mainly characterised by proteins and cellulose, was pyrolysed at 350°C using a bench scale pyrolyser, in order to convert the raw biomass into bio-oil and bio-char. The major pyrolysis product resulted to be bio-char (45% mass yield), whereas a lower amount of pyrolysis oil (25% mass yield) was obtained. Bio-oil was mainly formed by cellulose pyrolysis products (55% w/wbio-oil mainly anhydrosugars, anhydro-oligomers and small polysaccharides). On the other hand the feedstock proteins played the most important role in bio-char formation.
Keywords:
biochar, biodiesel, hydrogen, microalgae, pyrolysis
Topic:
Biomass resources
Subtopic:
Research on energy crops (session 3)
Event:
18th European Biomass Conference and Exhibition
Session:
VP1.3.19
Pages:
455 - 458
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-VP1.3.19
Price:
FREE
