Anaerobic Biodegradation of Cellulose-Xylan-Lignin Nanocomposites as Model Assemblies of Lignocellulosic Biomass

被引：19

作者：

Barakat, Abdellatif ^{[1
,2
]}

Gaillard, Cedric ^{[3
]}

Steyer, Jean-Philippe ^{[1
]}

Carrere, Helene ^{[1
]}

机构：

[1] INRA, Lab Biotechnol Environm, F-11100 Narbonne, France

[2] INRA, UMR IATE 1208, F-34060 Montpellier 1, France

[3] INRA, BIA, Lab Microscopies, Plateforme BIBS,UR 1268, F-44316 Nantes 03, France

来源：

WASTE AND BIOMASS VALORIZATION | 2014年 / 5卷 / 02期

关键词：

Anaerobic digestion; Biogas; Accessibility; Plant cell wall; Lignocellulosic materials; Model assemblies; ENZYMATIC-HYDROLYSIS; STRUCTURAL FEATURES; SYNTHETIC LIGNIN; CROSS-LINKING; HEMICELLULOSES; FERMENTATION; PRETREATMENT; KINETICS; STATE; LIMIT;

D O I：

10.1007/s12649-013-9245-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In order to determine the parameters influencing lignocellulosic biomass biodegradability, binary and ternary model systems were constructed, consisting of cellulose nanowhiskers gel, xylan matrix derived from lignocellulosic plants and synthetic lignin. The adsorption of two xylan polymers with different arabinose/xylose ratios (Ara/Xyl) on the cellulose nanowhiskers resulted in the synthesis of nanocomposites each of different Ara/Xyl ratios and crystallinity indexes. Organized and associated cellulose-xylan-lignin nanocomposites were formed following the polymerization of guaiacyl (G) and syringyl (S) lignin monomers using a peroxidase/H2O2 system in cellulose nanowhiskers-xylan gel. The anaerobic digestion of cellulose nanowhiskers, xylans and cellulose-xylan nanocomposites indicated that the biomethane production depended strongly on the xylan Ara/Xyl ratio and on the cellulose crystallinity. However, the anaerobic digestion of cellulose-xylan-lignin nanocomposites showed that the digestion rate decreased significantly in the presence of lignin. Moreover, there was an even more considerable decrease in digestion rate in the presence of GS-type lignin compared to G-type lignin.

引用

页码：293 / 304

页数：12

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