Thermal properties of Napier grass fibers

Reddy, K. Obi; Maheswari, C. Uma; Reddy, D. Jeevan Prasad; Rajulu, A. Varada

doi:10.1016/j.matlet.2009.08.035

Cited by 112 publications

(45 citation statements)

References 11 publications

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“…Consequently, it can be deduced that the lignin content of NGS has similar decomposition pathways while the change observed in the NGT and NGL may be attributed to different oxygen functional groups present in the lignin component of the respective biomass sanmples. The decomposition temperature values of different parts of the Napier grass in this study are in good agreement with literature values of 373-523 K, 523-623 K, 623-773 K and above 773 K for extractives, hemicellulose, cellulose and lignin, respectively [6,36,39]. Biomass decomposition can be represented by the Equation (2) …”

Section: Resultssupporting

confidence: 89%

“…These represent the crystallographic planes 200, 110 and 004, respectively, according to the native cellulose structure [20][21][22][23]. These characteristic peaks in the diffractogram are comparable to the Napier grass peaks identified by Reddy et al [6]. The remaining components, mainly hemicellulose, lignin and extractives in the material are approximated to belong to the amorphous phase since no larger crystals are formed by these components [20,24].…”

Section: Resultssupporting

confidence: 67%

“…Taking the natural logarithm of Equation (5) and rearranging, we obtain Equation (6). A plot of right hand side versus 1/T will give a straight line for a particular reaction order.…”

Section: Resultsmentioning

confidence: 99%

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Comprehensive Characterization of Napier Grass as a Feedstock for Thermochemical Conversion

et al. 2015

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Study on Napier grass leaf (NGL), stem (NGS) and leaf and stem (NGT) was carried out. Proximate, ultimate and structural analyses were evaluated. Functional groups and crystalline components in the biomass were examined. Pyrolysis study was conducted in a thermogravimetric analyzer under nitrogen atmosphere of 20 mL/min at constant heating rate of 10 K/min. The results reveal that Napier grass biomass has high volatile matter, higher heating value, high carbon content and lower ash, nitrogen and sulfur contents. Structural analysis shows that the biomass has considerable cellulose and lignin contents which are good candidates for good quality bio-oil production. From the pyrolysis study, degradation of extractives, hemicellulose, cellulose and lignin occurred at temperature around 478, 543, 600 and above 600 K, respectively. Kinetics of the process was evaluated using reaction order model. New equations that described the process were developed using the kinetic parameters and data compared with experimental data. The results of the models fit well to OPEN ACCESSEnergies 2015, 8 3404 the experimental data. The proposed models may be a reliable means for describing thermal decomposition of lignocellulosic biomass under nitrogen atmosphere at constant heating rate.

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Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 67%

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Comprehensive Characterization of Napier Grass as a Feedstock for Thermochemical Conversion

et al. 2015

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“…This might be due to the removal of amorphous hemicelluloses from the fibres by alkali-treatment. Mercerization reduced the hemicellulose to a considerable extent, giving rise to lignin-cellulose complex, thereby making the product more stable than the untreated sample, and this reflected in the increased amount of residual char [33,34]. The thermal stability of the fibres treated with 20% alkali concentration decreased as compared to that of 15% alkali treated fibres.…”

Section: Tga Analysismentioning

confidence: 99%

Effect of Mercerization on the Properties of Pandanus Odorifer Lignocellulosic Fibre

Teli¹,

Jadhav²

2017

IOSR JPTE

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“…where I 002 (2 = 22 ∘ ) is the peak intensity of crystalline peak and I 001 (2 = 16 ∘ ) is the peak intensity of the amorphous zone in the chromatogram [17,18].…”

Section: X-ray Diffractometrymentioning

confidence: 99%

Structural Analysis of Alkaline Pretreated Rice Straw for Ethanol Production

Phitsuwan

Permsriburasuk

Baramee

et al. 2017

International Journal of Polymer Science

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Rice straw (RS) is an abundant, readily available agricultural waste, which shows promise as a potential feedstock for Asian ethanol production. To enhance release of glucose by enzymatic hydrolysis, RS was pretreated with aqueous ammonia (27% w/w) at two pretreatment temperatures: room temperature and 60 ∘ C. Statistical analysis indicated similarity of enzymatic glucose production at both pretreatment temperatures after 3-day incubation. Chemical composition, FTIR, and EDX analyses confirmed the retention of glucan and xylan in the pretreated solid, but significant reduction of lignin (60.7% removal) and silica. SEM analysis showed the disorganized surfaces and porosity of the pretreated RS fibers, thus improving cellulose accessibility for cellulase. The crystallinity index increased from 40.5 to 52.3%, indicating the higher exposure of cellulose. With 10% (w/v) solid loadings of pretreated RS, simultaneous saccharification and fermentation yielded a final ethanol concentration of 24.6 g/L, corresponding to 98% of maximum theoretical yield. Taken together, aqueous ammonia pretreatment is an effective method to generate highly digestible pretreated RS for bioethanol production and demonstrates potential application in biorefinery industry.

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Thermal properties of Napier grass fibers

Cited by 112 publications

References 11 publications

Comprehensive Characterization of Napier Grass as a Feedstock for Thermochemical Conversion

Comprehensive Characterization of Napier Grass as a Feedstock for Thermochemical Conversion

Effect of Mercerization on the Properties of Pandanus Odorifer Lignocellulosic Fibre

Structural Analysis of Alkaline Pretreated Rice Straw for Ethanol Production

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