Polydopamine-based superhydrophobic membranes for biofuel recovery

The development of renewable energy sources like biofuels has emerged as a promising road to resolve future energy supplies. Fermentation is a common process for producing biofuels from biomass, and the biofuels have to be extracted and concentrated from the fermentation broth before they can be used. In comparison with conventional separation methods such as distillation and adsorption, membrane-based separation has been considered to be the most promising alternative because of its low energy consumption, ease of operation, and cost effectiveness. Hydrophobic polymeric membranes and inorganic membranes have been developed for recovery of Bioalcohols from diluted fermentation broths via pervaporation. However, the separation performances of the previously reported hydrophobic membranes are usually unsatisfactory for the recovery of Bioalcohols. It is desired to develop a novel hydrophobic membrane for efficient recovery of Bioalcohols. Inspired by the adhesive ability of dopamine and the hierarchical structure of a lotus leaf, superhydrophobic membranes are developed to concentrate Bioalcohols. The superhydrophobic membranes with a water contact angle of about 172.0° show a promising application for the recovery of Bioalcohols from dilute aqueous solutions due to the superhydrophobicity and 0.2 μm thickness of the membrane, which offers a high potential application for in situ recovery of Bioalcohols.

Polydopamine-based superhydrophobic membranes for biofuel recovery

The development of renewable energy sources like biofuels has emerged as a promising road to resolve future energy supplies. Fermentation is a common process for producing biofuels from biomass, and the biofuels have to be extracted and concentrated from the fermentation broth before they can be used. In comparison with conventional separation methods such as distillation and adsorption, membrane-based separation has been considered to be the most promising alternative because of its low energy consumption, ease of operation, and cost effectiveness. Hydrophobic polymeric membranes and inorganic membranes have been developed for recovery of Bioalcohols from diluted fermentation broths via pervaporation. However, the separation performances of the previously reported hydrophobic membranes are usually unsatisfactory for the recovery of Bioalcohols. It is desired to develop a novel hydrophobic membrane for efficient recovery of Bioalcohols. Inspired by the adhesive ability of dopamine and the hierarchical structure of a lotus leaf, superhydrophobic membranes are developed to concentrate Bioalcohols. The superhydrophobic membranes with a water contact angle of about 172.0° show a promising application for the recovery of Bioalcohols from dilute aqueous solutions due to the superhydrophobicity and 0.2 μm thickness of the membrane, which offers a high potential application for in situ recovery of Bioalcohols. © 2013 The Royal Society of Chemistry.

fabricacion de Bioalcohol a partir de la vaina del algarrobo y ii fermentacion alcoholica del extracto acuoso

Se presenta, en esta segunda parte del articulo sobre la obtencion de Bioalcohol a partir de la vaina del fruto del algarrobo, el estudio experimental de la fermentacion alcoholica del extracto acuoso. El presente articulo pretende mostrar que es posible realizar la transformacion alcoholica de los azucares extraidos de una forma sencilla y con una velocidad y rendimiento aceptable.

En trabajos previos por nuestro grupo de investigacion [1 y 2] se ha propuesto la preparacion de Bioalcohol a partir de la vaina del fruto del algarrobo, desarrollando un metodo operativo para realizar la extraccion acuosa de los azucares solubles en agua en ella contenidos.
El siguiente paso logico a realizar para comprobar la certeza de nuestra aseveracion inicial es conseguir realizar la transformacion alcoholica de los azucares extraidos de una forma sencilla, y con una velocidad y rendimiento, tanto industrial como economico, aceptable.
El proposito del presente articulo es mostrar que esta transformacion de los azucares extraidos es industrialmente posible.

fabricacion de Bioalcohol a partir de la vaina del algarrobo i extraccion acuosa de los azucares solubles

Se ha propuesto la preparacion de Bioalcohol a partir de la vaina del fruto del algarrobo, realizando la extraccion acuosa de los azucares solubles en agua en ella contenidos. Se ha verificado la caracterizacion fisica y quimica de la vaina de algarrobo, un modelo de la cinetica de su lixiviacion una vez premolida y su aplicacion en laboratorio. Finalmente, se describen las caracteristicas de las lejias azucaradas obtenidas

Polydopamine-based superhydrophobic membranes for biofuel recovery

The development of renewable energy sources like biofuels has emerged as a promising road to resolve future energy supplies. Fermentation is a common process for producing biofuels from biomass, and the biofuels have to be extracted and concentrated from the fermentation broth before they can be used. In comparison with conventional separation methods such as distillation and adsorption, membrane-based separation has been considered to be the most promising alternative because of its low energy consumption, ease of operation, and cost effectiveness. Hydrophobic polymeric membranes and inorganic membranes have been developed for recovery of Bioalcohols from diluted fermentation broths via pervaporation. However, the separation performances of the previously reported hydrophobic membranes are usually unsatisfactory for the recovery of Bioalcohols. It is desired to develop a novel hydrophobic membrane for efficient recovery of Bioalcohols. Inspired by the adhesive ability of dopamine and the hierarchical structure of a lotus leaf, superhydrophobic membranes are developed to concentrate Bioalcohols. The superhydrophobic membranes with a water contact angle of about 172.0° show a promising application for the recovery of Bioalcohols from dilute aqueous solutions due to the superhydrophobicity and 0.2 μm thickness of the membrane, which offers a high potential application for in situ recovery of Bioalcohols. © 2013 The Royal Society of Chemistry.