Lignocellulose HydrolysisLignocellulosic biomass, primarily comprised of cellulose, hemicellulose, and lignin, is an abundant and renewable resource that holds great promise as a source of biofuels and renewable biobased chemicals and biomaterials. Lignocellulosic biomass can be processed in a number of ways, one is through the hydrolysis of the structural polysaccharides (cellulose and hemicellulose) into their constituent sugars, a reaction commonly facilitated by acid or enzymes, followed by the fermentation of these sugars by yeast or other microorganisms.
Enzymatic HydrolysisIn enzymatic hydrolysis cellulases and hemicellulases play a critical role, working synergistically to cleave the glycosidic linkages in cellulose and hemicellulose, respectively. However, depending on the type of pretreatment process involved, hydrolysis of hemicellulose may not be necessary, since it may have already taken place in the pretreatment leading to the hemicellulose sugars being in the liquid output of the pretreatment with the solid residue mostly containing cellulose (plus lignin, again dependent on the type of pretreatment).
SHF Process and its AdvantagesSHF is characterized by two distinct stages: the hydrolysis of cellulose (and hemicellulose, if present after the pretreatment) into monomeric sugars, followed by the fermentation of these sugars into biofuels.
Disadvantages of SHF
1. Understanding Your Requirements
2. Detailed Feedstock Analysis
3. Pretreatment (Lab-Scale)
4. SHF Stage 1 (Hydrolysis) Optimisation
5. SHF Stage 2 (Fermentation) Optimisation
6. Product Recovery
7. Valorisation of Remaining Biomass
8. Validation at Higher TRLs
9. Technoeconomic Analysis (TEA)
Bioethanol from Palm ResiduesCelignis undertook a bioprocess development project for a client, based in the Middle East, that was targeting the production of bioethanol from the residues of local palm trees. This was a lab-scale vertically-integrated project covering pretreatment, and separate hydrolysis and fermentation (SHF).
Has a deep understanding of all biological and chemical aspects of bioproceses. Has developed Celignis into a renowned provider of bioprocess development services to a global network of clients.
A dynamic, purpose-driven chemical engineer with expertise in bioprocess development, process design, simulation and techno-economic analysis over several years in the bioeconomy sector.
PhD (Analytical Chemistry)
Dreamer and achiever. Took Celignis from a concept in a research project to being the bioeconomy's premier provider of analytical and bioprocessing expertise.