title: Pyrochars from bioenergy residue as novel bio-adsorbents for lignocellulosic hydrolysate detoxification.
abstract: The robust supramolecular structure of biomass often requires severe pretreatments conditions to produce soluble sugars. Nonetheless, these processes generate some inhibitory compounds (i.e. furans compounds and aliphatic acids) deriving mainly from sugars degradation. To avoid the inhibition of the biological process and to obtain satisfactory sugars conversion level into biofuels, a detoxification step is required. This study investigates the use of two pyrochars derived from solid anaerobic digestates for the detoxification of lignocellulosic hydrolysates. At a pyrochar concentration of 40gL(-1), more than 94% of 5-HMF and 99% of furfural were removed in the synthetic medium after 24h of contact time, whereas sugars concentration remained unchanged. Furfural was adsorbed faster than 5-HMF by both pyrochars and totally removed after 3h of contact. Finally, the two pyrochars were found efficient in the detoxification of corn stalks and Douglas fir wood chips hydrolysates without affecting the soluble sugars concentrations.
authors: INRA, UMR 1208 Ingénierie des Agropolymères et Technologies Emergentes 2, place Pierre Viala, F-34060 Montpellier Cedex, France. Electronic address: flomonlau@hotmail.fr.
authors: F
authors: F
authors: Monlau
authors: INRA, UMR 1208 Ingénierie des Agropolymères et Technologies Emergentes 2, place Pierre Viala, F-34060 Montpellier Cedex, France.
authors: C
authors: C
authors: Sambusiti
authors: Biomass Group, Chemical Engineering Department, Aristotle University of Thessaloniki, Un. Box 455, 54124 Thessaloniki, Greece.
authors: N
authors: N
authors: Antoniou
authors: Biomass Group, Chemical Engineering Department, Aristotle University of Thessaloniki, Un. Box 455, 54124 Thessaloniki, Greece.
authors: A
authors: A
authors: Zabaniotou
authors: Université Mohammed VI Polytechnique, Lot 660 - Hay Moulay Rachid, 43150 Ben Guerir, Morocco.
authors: A
authors: A
authors: Solhy
authors: INRA, UMR 1208 Ingénierie des Agropolymères et Technologies Emergentes 2, place Pierre Viala, F-34060 Montpellier Cedex, France. Electronic address: barakat@supagro.inra.fr.
authors: A
authors: A
authors: Barakat
mesh_terms: D000327:Adsorption; D056804:Biofuels; D002606:Charcoal / Q000737:chemistry* / Q000302:isolation & purification*; D005663:Furans / Q000302:isolation & purification*; D006361:Heating; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry* / Q000302:isolation & purification*; D018547:Plant Stems / Q000737:chemistry; D014462:Ultrafiltration / Q000379:methods*; D014934:Wood / Q000737:chemistry; D003313:Zea mays / Q000737:chemistry
chemical_list: D056804:Biofuels; D005663:Furans; C036909:lignocellulose; D002606:Charcoal; D008031:Lignin
keywords: Digestate; Furans; Inhibition; Lignocellulosic hydrolysate; Pyrolysis