Factors influencing the alkaline extraction of poplar hemicelluloses in a twin-screw reactor: correlation with specific mechanical energy and residence time distribution of the liquid phase

The thermo-mechano-chemical twin-screw reactor, a new perspective for the biorefinery of sunflower whole plant: aqueous extraction of oil and other biopolymers, and production of biodegradable fiberboards from cake

“…Conducted for nearly twenty-five years at LCA laboratory, several studies have highlighted the multiple possibilities of the twin-screw technology for both fractionation and valorization of agricultural resources. Some examples are following: (i) the mechanical pressing and/or the solvent extraction of vegetable oil from sunflower (Dufaure et al, 1999a(Dufaure et al, , 1999bAmalia Kartika et al, 2005, 2006, 2010Evon et al, 2007Evon et al, , 2009Evon et al, , 2010aEvon et al, , 2012a, neem (Faye, 2010), jatropha and coriander (Sriti et al, 2012;Uitterhaegen et al, 2015) oleaginous seeds, (ii) the extraction of hemicelluloses from lignocellulosic plant materials (Manolas, 1993;N'Diaye, 1996;Prat, 1998;N'Diaye and Rigal, 2000;Maréchal, 2001), (iii) the extraction of pectic substances from the pith of sunflower stalk (Maréchal and Rigal, 1999) or sugar beet pulp (Jorda, 2003), (iv) the extraction of vegetable proteins (Silvestre et al, 1999; Fig. 1.…”

Xylose removal from lignocellulosic biomass via a twin-screw extruder: The effects of screw configurations and operating conditions

“…Several studies have expanded the usage of twin-screw extruders for the continuous extraction of vegetable oil from sunflower and soy [4e9], while, recently, a modified twin-screw extruder incorporated with a filtration device was considered as a thermalmechano-chemical reactor and a liquid/solid separator for hemicellulose extraction from lignocellulosic biomass [9,10]. Much experience has been obtained successfully extracting hemicellulose via different solvents.…”

“…The reverse screw elements are frequently used to increase local pressure with a reverse flight by pushing material backward, which is essential for liquid and solid phases separation by filtration. A screw configuration is defined by screw elements with different pitches, lengths, stagger angles and positions, which can strongly influence the pressure development, extrudate properties, residence time distribution and energy consumption [10,15,16].…”

“…Although hemicellulose extraction via organic solvents in extruders has been demonstrated in the literature [9,10], little data is available on purely aqueous systems, especially with respect to operating conditions and energy input. Operating conditions of the extrusion process such as screw speed, and barrel temperature have been reported for different types of biomass, and significant effects on sugar recovery and torque requirement were found [19,20].…”

Bio-catalytic action of twin-screw extruder enzymatic hydrolysis on the deconstruction of annual plant material: Case of sweet corn co-products

“…The performance of twin-screw extrusion and the influence of the operating parameters have been studied on biomass fractionation from poplar (N'Diaye and Rigal, 2000), Miscanthus sp. (De Vrije et al, 2002), sugar beet pulp (Rouilly et al, 2006), sunflower (Evon et al, 2007;Kartika et al, 2006), soybean hulls (Yoo et al, 2011), rice straw (Chen et al, 2011), and wheat straw and bran (Marechal et al, 2004;Zeitoun et al, 2010;Vandenbossche et al, 2014a).…”