Effect of mesophilic and thermophilic conditions on changes of physicochemical characteristics of smooth cordgrass via dry digestion process

Liang, Yue-gan; Zhang, Zheng; Luo, Xingzhang; Guo, Feihong; Wang, Longmian; Zhang, Jibiao

doi:10.1016/j.cej.2011.01.020

Cited by 20 publications

(5 citation statements)

References 33 publications

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“…Table 1 show the spectra and assignment of functional groups. The peaks were assigned according to the previous reports [20] , [23] , [37] , [38] , [39] . Figure 2 shows heat-map like bird's eye viewing of FTIR spectra.…”

Section: Resultsmentioning

confidence: 99%

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Chemical Profiling of Jatropha Tissues under Different Torrefaction Conditions: Application to Biomass Waste Recovery

et al. 2014

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Gradual depletion of the world petroleum reserves and the impact of environmental pollution highlight the importance of developing alternative energy resources such as plant biomass. To address these issues, intensive research has focused on the plant Jatropha curcas, which serves as a rich source of biodiesel because of its high seed oil content. However, producing biodiesel from Jatropha generates large amounts of biomass waste that are difficult to use. Therefore, the objective of our research was to analyze the effects of different conditions of torrefaction on Jatropha biomass. Six different types of Jatropha tissues (seed coat, kernel, stem, xylem, bark, and leaf) were torrefied at four different temperature conditions (200°C, 250°C, 300°C, and 350°C), and changes in the metabolite composition of the torrefied products were determined by Fourier transform-infrared spectroscopy and nuclear magnetic resonance analyses. Cellulose was gradually converted to oligosaccharides in the temperature range of 200°C–300°C and completely degraded at 350°C. Hemicellulose residues showed different degradation patterns depending on the tissue, whereas glucuronoxylan efficiently decomposed between 300°C and 350°C. Heat-induced depolymerization of starch to maltodextrin started between 200°C and 250°C, and oligomer sugar structure degradation occurred at higher temperatures. Lignin degraded at each temperature, e.g., syringyl (S) degraded at lower temperatures than guaiacyl (G). Finally, the toxic compound phorbol ester degraded gradually starting at 235°C and efficiently just below 300°C. These results suggest that torrefaction is a feasible treatment for further processing of residual biomass to biorefinery stock or fertilizer.

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Section: Resultsmentioning

confidence: 99%

“…The intensity of peak number 1 gradually decreased with increased temperature. Some of the observed difference between the 200°C-treated and non-treated samples may represent dehydration of compounds [39] , whereas the decrease at higher temperatures may represent the cleavage of intramolecular hydrogen bonds [37] .…”

Section: Resultsmentioning

confidence: 99%

Chemical Profiling of Jatropha Tissues under Different Torrefaction Conditions: Application to Biomass Waste Recovery

et al. 2014

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“…NDF, ADF, and ADL were analyzed with two replicates according to the method (Van Soest 1963). Detailed analysis methods and apparatuses of TGA, FTIR, and 13 C NMR were reported elsewhere (Liang et al 2011). …”

Section: Methodsmentioning

confidence: 99%

Thermogravimetric analysis and structure change of lime-pretreated Spartina alterniflora

Liang

Cheng

Liang

et al. 2016

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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The thermal behavior and structure change of Spartina alterniflora pretreated with lime were investigated with raw and water-soaked samples for comparisons. Pretreatment significantly changed thermal decomposition behavior and activation energy. The activation energy of S. alterniflora ranged from 100.7 to 128 kJ/mol at the main decomposition stage. FTIR and solid-state 13 C NMR analyses revealed that pretreatment disrupted the carboxyl carbons attached to the lignin side chain. Compared with water soaking, lime pretreatment resulted in more modifications of structure and composition. Furthermore, structure breakage and composition removal change the pyrolysis characteristics of pretreated samples.

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“…However alkali extraction, including lime pretreatment could result in the solubilization, redistribution and condensation of lignin and the increscent in the crystalline state of the cellulose [32,33]. These effects would partly counteract the positive effects of lignin removal and cellulose swelling from pretreatment [34].…”

Section: Economic and Environmental Comparisonmentioning

confidence: 96%

Lime pretreatment to improve methane production of smooth cordgrass (Spartina alterniflora)

Liang

Zhang

Luo

et al. 2013

Chemical Engineering Journal

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Effect of mesophilic and thermophilic conditions on changes of physicochemical characteristics of smooth cordgrass via dry digestion process

Cited by 20 publications

References 33 publications

Chemical Profiling of Jatropha Tissues under Different Torrefaction Conditions: Application to Biomass Waste Recovery

Chemical Profiling of Jatropha Tissues under Different Torrefaction Conditions: Application to Biomass Waste Recovery

Thermogravimetric analysis and structure change of lime-pretreated Spartina alterniflora

Lime pretreatment to improve methane production of smooth cordgrass (Spartina alterniflora)

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