Thermal decomposition of a Moroccan wood under a nitrogen atmosphere

Zeriouh, A.; Belkbir, L.

doi:10.1016/0040-6031(94)02246-k

Cited by 61 publications

(21 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second rapid mass loss stage around 110 to 400 °C is mainly attributed to the pyrogenic decomposition of cellulose and hemicellulose. The last stage (400 to 600 °C) of slight mass loss in fiberboards is accompanied by the calcination of charcoal (Chen et al 1993;Zeriouh and Belkbir 1995;Shen and Kawi 1999;Chen et al 2005;Chiranjeevi et al 2006;Unuabonah et al 2013). These results are in agreement with char yield and FTIR analysis.…”

supporting

confidence: 85%

Fire Performance of Ultra-Low Density Fiberboard (ULDF) with Complex Fire-Retardants

Liu¹,

Chen²,

Wei³

et al. 2016

BioResources

View full text Add to dashboard Cite

To clarify how the fire performance of ultra-low density fiberboard (ULDF) can be improved by complex fire-retardants, the limiting oxygen index (LOI) and microstructure of ULDFs with different additive amounts of complex fire-retardants was analyzed. The char yield, chemical bonding, and thermostability of ULDFs treated by different temperatures were also tested. Results showed that the LOI values and compactness of ULDFs were increased with increased amounts of fire-retardants. Three steps of char yield curves in control fiberboard (CF) and mixed fiberboard (MF) were apparent. The preliminary degradation in lignin and cellulose of CF occurred at 300 °C. The cellulose had completely decomposed at 400 °C, but in the case of MF, the lignin and cellulose were not completely decomposed at 400 °C. It was shown that there are different ways to improve the fire resistance of ULDF using boron, nitrogen-phosphorus, silica, and halogen-based fire-retardants. The fiberboard with silicium compounds had the lowest mass loss in three stages and total mass loss. Compared with CF, MF had a lower mass loss. Furthermore, the exothermic peak for MF at around 400.0 °C was decreased, indicating that the fire resistance of ULDF was improved by the complex fire-retardants.

show abstract

supporting

confidence: 85%

Fire Performance of Ultra-Low Density Fiberboard (ULDF) with Complex Fire-Retardants

Liu¹,

Chen²,

Wei³

et al. 2016

BioResources

View full text Add to dashboard Cite

show abstract

“…More structurally complicated biochars are formed at intermediate temperatures (250 °C to 350 °C), and these samples are expected to display relatively slow sorption rates in the carbonized areas. Furthermore, previous studies indicated that at approximately 300 °C, the pyrolysis of the hemicellulose and cellulose is complete, and the wood nanocomposite structure changes dramatically at approximately 300 °C (Zeriouh and Belkbir 1995;Paris et al 2005). The current study also shows that for larch wood, the water uptake of the 200 °C and 250 °C heat-treated samples was almost the same, but when the sample was treated at 300 °C, the water uptake decreased remarkably.…”

Section: Changes Of Water Uptake For Wood Processed Under Different Tsupporting

confidence: 64%

Influence of Heat Treatment on the Water Uptake Behavior of Wood

Zhang

Ma³

et al. 2017

BioResources

View full text Add to dashboard Cite

a Dimensional stability is an important property of wood that is strongly influenced by its water uptake behavior. Heat treatment is one method to improve wood dimensional stability. This study investigated the effects of heat treatment on the water uptake behavior of wood using a wicking test. The thickness of the tested wood sample was similar to that of the surface wood panel in a 3-layer composite floorboard. It was treated at different temperatures ranging from 200 °C to 400 °C under a nitrogen atmosphere for 10 min to provide the test data to investigate the basic theory relating to dimensional stability of heat-treated wood processed at higher temperatures for a short length of time. During the test, the water uptake of larch (Larix gmelinii) and red oak (Quercus rubra) were recorded continuously. The heattreated wood had a much lower water uptake ability than untreated wood during the early stage of the wicking test; untreated wood exhibited higher total water uptake. Compared with the untreated sample, the red oak wood treated at 400 °C had an average water uptake rate that decreased from 0.28 mg/mm 3 per hour to 0.038 mg/mm 3 per hour.

show abstract

“…In order to obtain activated carbon from this kind of materials, these constituents must be decomposed by effect of the temperature. It has been reported that the decompositions of hemicellulose and cellulose occur in the temperature ranges of 180-240 and 230-310, respectively (Zeriouh and Belkbir, 1995), but lignin began decomposition at a wide temperature range of 150-750°C (Nunn et al, 1985;Tsamba et al, 2006). In order to determine activation temperature and general decomposition characteristics of the precursor during the activation, it was subjected to TG analysis ( Fig.…”

Section: Preparation Of Activated Carbonmentioning

confidence: 99%

Preparation and Characterization of a Novel Activated Carbon from Vine Shoots by ZnCl2 Activation and Investigation of Its Rifampicine Removal Capability

Erdem

Orhan

Şahin

et al. 2016

Water Air Soil Pollut

View full text Add to dashboard Cite

Preparation and characterization of a novel activated carbon obtained from vine shoots by ZnCl 2 activation and its rifampicine removal capacity were investigated in this study. The effects of activation temperature and impregnation ratio (precursor/ZnCl 2 ) on the activated carbon properties were investigated. The prepared activated carbon was characterized by BET surface area, surface functional group analysis by Boehm's titration and FT-IR analysis, pH pzc , iodine number, SEM-EDX, and particle size distribution. The results showed that the surface area, pore size, and pore volume of the activated carbon increased with the increasing temperature and impregnation ratio and reached maxima at the impregnation ratio of 40/30 at 700°C. Under the optimal conditions, it was determined that the BET surface area, total pore volume, iodine number, and pH pzc of the activated carbon were 1689 m 2 /g, 0.842 cm 3 /g, 1276 mg/g, and 4.8, respectively, and it has mainly acidic functional groups (total 0.2516 meq/g) on its surface. The activated carbon obtained was evaluated for rifampicine removal efficiency depending on contact time, adsorbent dosage, and initial concentration of rifampicine. Maximum adsorption capacity of rifampicine by the activated carbon (Q°) was determined according to Langmuir adsorption isotherm. The adsorption data was best fitted to the Langmuir isotherm with R 2 of 0.983 and Q°was found to be 476.2 mg/g.

show abstract

Thermal decomposition of a Moroccan wood under a nitrogen atmosphere

Cited by 61 publications

References 7 publications

Fire Performance of Ultra-Low Density Fiberboard (ULDF) with Complex Fire-Retardants

Fire Performance of Ultra-Low Density Fiberboard (ULDF) with Complex Fire-Retardants

Influence of Heat Treatment on the Water Uptake Behavior of Wood

Preparation and Characterization of a Novel Activated Carbon from Vine Shoots by ZnCl2 Activation and Investigation of Its Rifampicine Removal Capability

Contact Info

Product

Resources

About