title: Bioreactors for lignocellulose conversion into fermentable sugars for production of high added value products.
abstract: Lignocellulosic biomasses derived from dedicated crops and agro-industrial residual materials are promising renewable resources for the production of fuels and other added value bioproducts. Due to the tolerance to a wide range of environments, the dedicated crops can be cultivated on marginal lands, avoiding conflict with food production and having beneficial effects on the environment. Besides, the agro-industrial residual materials represent an abundant, available, and cheap source of bioproducts that completely cut out the economical and environmental issues related to the cultivation of energy crops. Different processing steps like pretreatment, hydrolysis and microbial fermentation are needed to convert biomass into added value bioproducts. The reactor configuration, the operative conditions, and the operation mode of the conversion processes are crucial parameters for a high yield and productivity of the biomass bioconversion process. This review summarizes the last progresses in the bioreactor field, with main attention on the new configurations and the agitation systems, for conversion of dedicated energy crops (Arundo donax) and residual materials (corn stover, wheat straw, mesquite wood, agave bagasse, fruit and citrus peel wastes, sunflower seed hull, switchgrass, poplar sawdust, cogon grass, sugarcane bagasse, sunflower seed hull, and poplar wood) into sugars and ethanol. The main novelty of this review is its focus on reactor components and properties.
authors.affiliation: Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo via Cintia 4, 80126, Naples, Italy.
authors.forename: Rossana
authors.initials: R
authors.lastname: Liguori
authors.affiliation: Department of Agriculture, University of Naples Federico II, Portici, Italy.
authors.forename: Valeria
authors.initials: V
authors.lastname: Ventorino
authors.affiliation: Department of Agriculture, University of Naples Federico II, Portici, Italy.
authors.forename: Olimpia
authors.initials: O
authors.lastname: Pepe
authors.affiliation: Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo via Cintia 4, 80126, Naples, Italy. vfaraco@unina.it.
authors.forename: Vincenza
authors.initials: V
authors.lastname: Faraco
mesh_terms: D018533:Biomass; D019149:Bioreactors; D050260:Carbohydrate Metabolism; D002482:Cellulose / Q000378:metabolism; D018556:Crops, Agricultural / Q000378:metabolism; D000431:Ethanol; D005285:Fermentation; D006868:Hydrolysis; D008031:Lignin / Q000378:metabolism*; D031786:Saccharum / Q000378:metabolism; D003313:Zea mays / Q000378:metabolism
chemical_list: C036909:lignocellulose; D000431:Ethanol; D002482:Cellulose; D008031:Lignin; C027433:bagasse
keywords: Anchor impeller; Paddle blade magnetic impeller; Peg-mixer; Pitched-blade impeller; Rushton impeller; S-shaped impeller; Single and double helical ribbon impeller