Thermogravimetric analysis and emission characteristics of two energy crops in air atmosphere: Arundo donax and Miscanthus giganthus

Jeguirim, Mejdi; Dorge, Sophie; Trouvé, Gwenaëlle

doi:10.1016/j.biortech.2009.05.063

Cited by 104 publications

(46 citation statements)

References 31 publications

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“…These results are consistent with those obtained by Jeguirim et al (2010), who determined the HHV at 17.2 MJ kg -1 , while Dahl and Obernberger (2004) saw an HHV of 19.8 MJ kg -1 . As regards Miscanthus × giganteus, the investigated HHV was 18.2 MJ kg -1, and LHV was 16.8 MJ kg -1 .…”

Section: Resultssupporting

confidence: 92%

“…A comparison of the obtained results with literature references (Howaniec and Smolinski, 2011;Jegurim et al, 2010) Ash content is one of the main factors of biomass quality, since higher amounts of ash diminishes the quality of fuels, especially solid ones. According to Jeguirim et al (2010), the ash content in Arundo donax L. is 5.0%, while our investigation found a somewhat lower value of 3.56%. The above authors also state that the ash content of Miscanthus × giganteus is 2.7%, while in Howaniec and Smolinski (2011), it was determined at 1.60%, i.e.…”

Section: Resultscontrasting

confidence: 66%

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Biomass valorisation of Arundo donax L., Miscanthus × giganteus and Sida hermaphrodita for biofuel production

Krička¹,

Matin²,

Bilandžija³

et al. 2017

International Agrophysics

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The potential of energy crops Sida hermaphrodita on organic farm'.A b s t r a c t. In the context of the growing demand for biomass, which is being encouraged by the EU directives on the promotion of the use of renewable energy, recent investigations have been increasingly focused on fast-growing energy crops. The aim of this study was to investigate the energy properties of three types of agricultural energy crops: Arundo donax L., Miscanthus × giganteus and Sida hermaphrodita. This investigation looked into the content of non-combustible and combustible matter, higher and lower heating values, lignocellulose content, and biomass macro-elements. The results indicate that the energy values of these crops are comparable, while their lignocellulose content shows significant variations. Thus, Arundo donax L. can best be utilised as solid biofuel due to its highest lignin content, while Miscanthus × giganteus and Sida hermaphrodita L. can be used for both liquid and solid biofuels production. As far as Arundo donax L. is concerned, a higher ash level should be taken into consideration.K e y w o r d s : energy crops, energy values, chemical composition

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Section: Resultssupporting

confidence: 92%

Section: Resultscontrasting

confidence: 66%

Biomass valorisation of Arundo donax L., Miscanthus × giganteus and Sida hermaphrodita for biofuel production

Krička¹,

Matin²,

Bilandžija³

et al. 2017

International Agrophysics

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show abstract

“…This assumption is supported by the fact that the peak at around T=350 K in the loss factor measurement becomes more distinct in the heating cycle after ageing, and additionally, in the second heating cycle a new peak at approximately 420 K appeared. A degradation of the Arundo donax during the first heating cycle is unlikely as it was observed for Arundo donax only for temperatures above approximately T≈450K 23,24 . Figure 4 shows a first heating cycle up to T=430K with a behaviour of the loss factor and the elastic modulus comparable to previously shown sample.…”

Section: Resultsmentioning

confidence: 88%

“…It corresponds to a dramatic drop of the modulus (αf 2 ). At a temperature around T=570 K the degradation under oxygen of lignin can be found for woods 24,31 . Furthermore, measurements of wood in a Dynamic Mechanical Thermal Analyzer using a frequency of f=10 Hz showed a peak around T=520 K which is due to the glass transition of polymeric components of the wood 32 .…”

Section: Resultsmentioning

confidence: 99%

Damping of the Woodwind Instrument Reed Material Arundo donax L

et al. 2018

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The viscoelastic properties (E', G', tanΦ, δ) of Arundo donax (AD) and a polypropylene-beech fiber composite (PPC) were measured from RT to 580K for various frequencies and strains. E' of AD varies between 5250-6250MPa depending on ageing at RT while E'(RT)=2250MPa of PPC is signifcantly lower. E' of the AD is higher than E' of PPC in the whole investigated temperature range with the exception of AD after a heat treatment up to 575K. Damping spectra exhibit peaks around 340K (Q=234kJ/mol) and 415K for the PPC related to relaxations in the crystalline part of polypropylene and the relaxation at melting temperature. For AD damping peaks were found at 350K (Q=320kJ/ mol) related to the glass-rubber transition of lignin, at 420K due to a reorganization in the amorphous phase of lignin, at 480K related to micro-Brownian motions in the non-crystalline region of cell-wall polymers and reduction of the crystallinity of cellulose, and at 570K due to the polymeric compounds of wood and/or a decomposition of lignin. The course of E' and tanΦ of AD and PPC is comparable from 20-200Hz, whereas tanΦ of AD is lower than tanΦ of PPC while E' of AD is higher than E' of PPC.

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“…Similar observations were made by Xie et al (2007) and Mui et al (2008) during the investigation of the degradation of this wood. The weight losses and the rates of thermal at the different stages of the thermal degradation (de-volatilization and combustion steps) changed with each different fiber and at any particular location on the plant (Jeguirim et al, 2010). The B. vulgaris internodes samples are stable up to 210°C and after that starts to decompose.…”

Section: Journal Of Agricultural Studiesmentioning

confidence: 99%

Thermal Degradation Analysis on 4-year-old Culms of Cultivated Tropical Bamboo Bambusa Vulgaris

Wahab

Mustafa

Fauzi³

et al. 2017

JAS

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The thermal degradation of matured 4-year-old culms of cultivated tropical bamboo Bambusa vulgaris was studied and analyzed. The analysis using the Fourier Transform Infrared Spectroscopy and Thermal Gravimetric Analysis revealed the presence of basic functional groups in the bamboo which consists mainly of ester, carbonyl, and hydroxyl groups. The chemicals present in the bamboo vary depending on the location of the samples taken from the bamboo culms. The moisture content and extractive were omitted in the kinetic study since they constituted less than 10% of the overall chemicals in bamboo and observed below 100℃. Low reactivity of lignin components and hemicellulose in bamboo occurred due to the peculiarities of the chemical structure and composition. The mechanism of the decomposition ISSN 2166-0379 2017 http://jas.macrothink.org 51 reactions taken as a three-step reaction which involved the activation energies and dynamics related to volatile fractions of hemicellulose, cellulose, and lignin. Activation energies of 46, 100, 105, 127, and 236 kJ/mol applied for all of the bamboos. The activation energy carried could provide better insight into the thermal decomposition process. It provides more information on critical energy needed to start a reaction. The decomposition activation energy range obtained could assist in understanding the thermal decomposition stability of the bamboo fibers and application in natural fiber reinforced polymer composite industry. Journal of Agricultural Studies

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Thermogravimetric analysis and emission characteristics of two energy crops in air atmosphere: Arundo donax and Miscanthus giganthus

Cited by 104 publications

References 31 publications

Biomass valorisation of Arundo donax L., Miscanthus × giganteus and Sida hermaphrodita for biofuel production

Biomass valorisation of Arundo donax L., Miscanthus × giganteus and Sida hermaphrodita for biofuel production

Damping of the Woodwind Instrument Reed Material Arundo donax L

Thermal Degradation Analysis on 4-year-old Culms of Cultivated Tropical Bamboo Bambusa Vulgaris

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