Experimental and kinetic modelling studies on the acid-catalysed hydrolysis of the water hyacinth plant to levulinic acid.
A comprehensive experimental and modelling study on the acid-catalysed hydrolysis of the water hyacinth plant (Eichhornia crassipes) to optimise the yield of levulinic acid (LA) is reported (T=150-175 degrees CH2SO4 = 0.1-1M, water hyacinth intake=1-5wt%). At high acid concentrations (>0.5M), LA was the major organic acid whereas at low acid concentrations (<0.1M) and high initial intakes of water hyacinth, the formation of propionic acid instead of LA was favoured. The highest yield of LA was 53mol% (35wt%) based on the amount of C6-sugars in the water hyacinth (T=175 degrees CH2SO4 =1M , water hyacinth intake=1wt%). The LA yield as a function of the process conditions was modelled using a kinetic model originally developed for the acid-catalysed hydrolysis of cellulose and good agreement between the experimental and modelled data was obtained.
Girisuta
B
B
Department of Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands; Department of Chemical Engineering, Parahyangan Catholic University, Ciumbuleuit 94, 40141 Bandung, Indonesia.
Danon
B
B
Manurung
R
R
Janssen
L P B M
LP
Heeres
H J
HJ
D018533:Biomass; D002384:Catalysis; D002482:Cellulose / Q000378:metabolism; D031806:Eichhornia / Q000737:chemistry / Q000378:metabolism*; D005662:Furaldehyde / Q000378:metabolism; D005690:Galactose / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D006868:Hydrolysis; D007700:Kinetics; D007982:Levulinic Acids / Q000378:metabolism*; D008954:Models, Biological; D018515:Plant Leaves / Q000378:metabolism; D013464:Sulfuric Acids / Q000378:metabolism*
D007982:Levulinic Acids; D013464:Sulfuric Acids; D002482:Cellulose; D005662:Furaldehyde; D005947:Glucose; C033158:sulfuric acid; C032246:levulinic acid; D005690:Galactose