Pervaporation of ethanol produced from banana waste.
Banana waste has the potential to produce ethanol with a low-cost and sustainable production method. The present work seeks to evaluate the separation of ethanol produced from banana waste (rejected fruit) using pervaporation with different operating conditions. Tests were carried out with model solutions and broth with commercial hollow hydrophobic polydimethylsiloxane membranes. It was observed that pervaporation performance for ethanol/water binary mixtures was strongly dependent on the feed concentration and operating temperature with ethanol concentrations of 1-10%; that an increase of feed flow rate can enhance the permeation rate of ethanol with the water remaining at almost the same value; that water and ethanol fluxes was increased with the temperature increase; and that the higher effect in flux increase was observed when the vapor pressure in the permeate stream was close to the ethanol vapor pressure. Better results were obtained with fermentation broth than with model solutions, indicated by the permeance and membrane selectivity. This could be attributed to by-products present in the multicomponent mixtures, facilitating the ethanol permeability. By-products analyses show that the presence of lactic acid increased the hydrophilicity of the membrane. Based on this, we believe that pervaporation with hollow membrane of ethanol produced from banana waste is indeed a technology with the potential to be applied.
Chemical Engineering Department, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil.
Roger Hoel
RH
Bello
Sanitary and Ambient Engineering Department, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil.
Poliana
P
Linzmeyer
Sanitary and Ambient Engineering Department, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil.
Cláudia Maria Bueno
CM
Franco
Chemical Engineering Department, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil; Sanitary and Ambient Engineering Department, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil; Masters Program in Process Engineering, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil.
Ozair
O
Souza
Chemical Engineering Department, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil; Sanitary and Ambient Engineering Department, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil; Masters Program in Process Engineering, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil.
Noeli
N
Sellin
Chemical Engineering Department, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil; Sanitary and Ambient Engineering Department, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil; Masters Program in Process Engineering, University of Joinville Region (UNIVILLE), Joinville, SC, Brazil.
Sandra Helena Westrupp
SH
Medeiros
Federal University of Santa Catarina (UFSC), Campus Blumenau, Blumenau, SC, Brazil. Electronic address: ci.marangoni@gmail.com.
Cintia
C
Marangoni
D056804:Biofuels; D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D000431:Ethanol / Q000737:chemistry*; D005285:Fermentation; D019344:Lactic Acid / Q000737:chemistry; D008031:Lignin / Q000737:chemistry*; D008567:Membranes, Artificial; D028521:Musa / Q000737:chemistry*; D010539:Permeability; D011312:Pressure; D012037:Refuse Disposal / Q000379:methods; D013696:Temperature; D014866:Waste Products / Q000032:analysis*; D014867:Water / Q000737:chemistry
D056804:Biofuels; D004129:Dimethylpolysiloxanes; D008567:Membranes, Artificial; D014866:Waste Products; D014867:Water; C036909:lignocellulose; D019344:Lactic Acid; D000431:Ethanol; C013830:baysilon; D008031:Lignin
Banana waste; Bioethanol; Biofuel; Lignocellulosic residue; Pervaporation; Polydimethylsiloxane membrane