Medium-Temperature Pyrolysis of Corn Stover Improved by Biopretreatment with White-rot Fungi

Yang, Xiao; Laskar, Dhrubojyoti D.; Ma, Fuying; Zhang, Xiaoyu; Chen, Shulin

doi:10.15376/biores.8.4.6383-6394

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…Comment citer ce document : Rouches, E., Dignac Few studies have applied Py-GC-MS on WRF pretreated wheat straw [17,19,20] or other lignocellulosic biomasses such as corn stover [21,22] or spruce [23] but it is noteworthy that in reflecting the chemical diversity of plants, pyrolysate composition is substratedependent. [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis-GC–MS to assess the fungal pretreatment efficiency for wheat straw anaerobic digestion

Rouches

Dignac

Zhou

et al. 2017

Journal of Analytical and Applied Pyrolysis

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Cost-effective and environment-friendly pretreatments, such as fungal pretreatments, are required for anaerobic digestion of lignocellulosic biomass particularly because the amount of methane produced is often limited by the lignin content. Anaerobic digestibility is estimated using a Biochemical Methane Potential (BMP) test, which lasts several weeks. Since the Py-GC–MS technique is considered to be a rapid method for obtaining information on various organic components, its suitability for the study of fungal pretreatment efficiency in anaerobic digestion was investigated here, to our knowledge for the first time. In this goal, mycelium of the white-rot fungi Polyporus brumalis BRFM 985, untreated wheat straw and straw pretreated with different fungal strains and under different conditions were analysed with Py-GC–MS. In the mycelium pyrolysate, diverse compounds, often considered as unspecific, probably derive from proteins (toluene, etc.). A strong presence of tyrosine and phenylalanine among the fungus amino acids was also suspected. As for pretreated straw samples, a correlation was observed between the amount of fungal biomass determined by qPCR (used as a reference method) and the sum of relative areas of toluene, styrene and ethylbenzene in the pyrograms, showing that it is feasible to estimate the fungal biomass amount on pretreated straws using Py-GC–MS. In addition, the H/L-Py (Holocelluloses/Lignin) ratio, determined by dividing the sums of areas of pyrolysis compounds that have a polysaccharide (PS) and lignin (LIG) origin, was correlated to the BMP values of pretreated straws, thus showing that the pretreatment efficiency can be rapidly estimated with Py-GC–MS in the tested conditions

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Section: Introductionmentioning

confidence: 99%

Pyrolysis-GC–MS to assess the fungal pretreatment efficiency for wheat straw anaerobic digestion

Rouches

Dignac

Zhou

et al. 2017

Journal of Analytical and Applied Pyrolysis

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“…degradation of wheat straw by Phanerochaete chrysosporium [26] and hardwood lignin by the Western Poplar Clearwing Borer, Paranthrene robiniae (Hy. Edwards), [27] as well as lignin digestion in every digestive organ of termites, [28,29] and more recently, chemical processes, such as heterogeneous catalytic hydrodeoxygenation of biomass-derived lignin to aromatic hydrocarbons, [30] aqueous ammonia pretreatment of wheat straw, [31] and physical processes including pyrolysis of corn stover [32] and water-only flow-through pretreatment of Miscanthus [33].…”

Section: Place Of Schemementioning

confidence: 99%

Solubilization of lignin in copolymer micelles in aqueous solution

Azadfar

Hiscox

Chen

2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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The solubilization of lignin in self-aggregating triblock amphiphilic poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) in aqueous solution has been studied utilizing liquid-state proton nuclear magnetic resonance spectroscopy (1 H NMR) and diffusion-ordered nuclear magnetic resonance spectroscopy (DOSY NMR). Our hypothesis for copolymer micelle incorporation of lignaceous species includes a "hydrophilic-aromatic interaction model", in which lignin derivatives with amphiphilic characteristics, known to be abundant in the effluent from pulp mill and pretreatment of various lignocellulosic materials, have an affinity for these micelles, and tend to form relatively organized structures within them. Here we show how the chemical/structural features of lignin units and small molecule lignin models determine their solubilization behavior in the micelles. It was found that a buildup of concentration series of lignin and lignin-based model compounds guaiacol, eugenol, phenol, guaiacylglycerol-beta-guaiacyl ether, ferulic acid in Pluronic ® F68-deuterium oxide solution results in significant upfield chemical shifts of PEO-(CH 2-CH 2) and PPO-(CH 3) proton resonances, and at a critical guest concentration (CGC), dramatic upfield shifts due to gross structural transitions in the micelles. We present evidence that copolymer micelle-lignin interactions depend on both chemical functional group characteristics of solute (i.e., polarity, Hbonding ability) and π-π interactions between aromatic/conjugated groups. Our results demonstrate how the loci of incorporated solute in the block copolymer micelles are affected by these features.

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In situ upgrading of pyrolysis biofuels by bentonite clay with simultaneous production of heterogeneous adsorbents for water treatment

Dou¹,

Goldfarb²

2017

Fuel

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Medium-Temperature Pyrolysis of Corn Stover Improved by Biopretreatment with White-rot Fungi

Cited by 4 publications

References 26 publications

Pyrolysis-GC–MS to assess the fungal pretreatment efficiency for wheat straw anaerobic digestion

Pyrolysis-GC–MS to assess the fungal pretreatment efficiency for wheat straw anaerobic digestion

Solubilization of lignin in copolymer micelles in aqueous solution

In situ upgrading of pyrolysis biofuels by bentonite clay with simultaneous production of heterogeneous adsorbents for water treatment

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