Brown algae hydrolysis in 1-n-butyl-3-methylimidazolium chloride with mineral acid catalyst system.
The amenability of three brown algal species, Sargassum fulvellum, Laminaria japonica and Undaria pinnatifida, to hydrolysis were investigated using the ionic liquid (IL), 1-n-butyl-3-methylimidazolium chloride ([BMIM]Cl). Compositional analyses of the brown algae reveal that sufficient amounts of sugars (15.5-29.4 wt.%) can be recovered. Results from hydrolysis experiments show that careful selection of the type of mineral acid as catalyst and control of acid loading could maximize the recovery of sugars. Optimal reaction time and temperature were determined from the kinetic studies on the sequential reducing sugar (TRS) formation and degradation. Optimal reaction times were determined based on the extent of furfurals formation as TRS degradation products. X-ray diffraction and environmental scanning electron microscopy confirmed the suitability of [BMIM]Cl as solvent for the hydrolysis of the three brown algae. Overall results show the potential of brown algae as renewable energy resources for the production of valuable chemicals and biofuels.
Energy and Environment Fusion Technology Center (E(2)FTC), Department of Energy Science and Technology (DEST), Myongji University, San 38-2, Namdong, Cheoin-gu, Yongin City, Gyeonggi-do 449-728, South Korea. lennymalihan@gmail.com
Lenny B
LB
Malihan
Grace M
GM
Nisola
Wook-Jin
WJ
Chung
D000143:Acids / Q000494:pharmacology*; D050260:Carbohydrate Metabolism / Q000187:drug effects; D002384:Catalysis / Q000187:drug effects; D006851:Hydrochloric Acid / Q000494:pharmacology; D006868:Hydrolysis / Q000187:drug effects; D007093:Imidazoles / Q000494:pharmacology*; D052578:Ionic Liquids / Q000494:pharmacology; D007700:Kinetics; D008903:Minerals / Q000494:pharmacology*; D010084:Oxidation-Reduction / Q000187:drug effects; D000459:Phaeophyceae / Q000737:chemistry / Q000187:drug effects* / Q000378:metabolism*; D011312:Pressure; D013696:Temperature; D013997:Time Factors
D000143:Acids; D007093:Imidazoles; D052578:Ionic Liquids; D008903:Minerals; C502841:1-butyl-3-methylimidazolium chloride; D006851:Hydrochloric Acid