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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Candelier, Kévin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2023Heat treatment of poplar plywood: modifications in physical, mechanical and durability propertiescitations
- 2021Assessment of catalytic torrefaction promoted by biomass potassium impregnation through performance indexescitations
- 2021A potassium responsive numerical path to model catalytic torrefaction kineticscitations
- 2020Anti-fungal and anti-termite activity of extractives compounds from thermally modified ash woodscitations
- 2019Termite and decay resistance of bioplast-spruce green wood-plastic compositescitations
- 2018Comparative study of local Tunisian woods properties and the respective qualities of their charcoals produced by a new industrial eco-friendly carbonization processcitations
- 2017Some physical and mechanical characterization of Tunisian planted #Eucalytus loxophleba# and #Eucalyptus salmonophloia# woods
- 2017Developing biocomposites panels from food packaging and textiles wastes: Physical and biological performancecitations
- 2017Resistance of thermally modified ash (#Fraxinus excelsior# L.) wood under steam pressure against rot fungi, soil-inhabiting micro-organisms and termitescitations
- 2016Study on chemical oxidation of heat treated lignocellulosic biomass under oxygen exposure by STA-DSC-FTIR analysiscitations
- 2016Control of wood thermal treatment and its effects on decay resistance: a reviewcitations
- 2015Heat treatment of tunisian soft wood species: effect on the durability, chemical modifications and mechanical propertiescitations
- 2015Impact of location and forestry conditions on some physical and mechanical properties of northern Tunisian #Pinus pinea# L. woodcitations
- 2015Mechanical characterization of heat-treated ash wood in relation with structural timber standards
- 2015Utilization of temperature kinetics as a method to predict treatment intensity and corresponding treated wood quality: Durability and mechanical properties of thermally modified woodcitations
- 2014Advantage of vacuum versus nitrogen to achieve inert atmosphere during softwood thermal modification
- 2013Utilization of TG-DSC to study thermal degradation of beech and silver fir
- 2013Effect of the nature of the inert atmosphere used during thermal treatment on chemical composition, decay durability and mechanical properties of wood
- 2013Comparison of chemical composition and decay durability of heat treated wood cured under different inert atmospheres: Nitrogen or vacuumcitations
- 2013Comparison of mechanical properties of heat treated beech wood cured under nitrogen or vacuumcitations
Places of action
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article
Assessment of catalytic torrefaction promoted by biomass potassium impregnation through performance indexes
Abstract
Biomass potassium impregnation is used to increase thermal degradation by catalytically influencing the wood components' conversion mechanisms during torrefaction. Chemical composition of the biomass, including potassium content and process temperature and time, appear as (catalytic or not) torrefaction parameters that impact weight loss, which can be considered performance indicators. The literature on torrefaction reports process performance evaluation by defining severity indexes. Evaluating the torrefaction performance by indexes provides valuable and dimensionless data as input in numerical modeling for up-scaling the analysis of production systems and assessing environmental products and processes. Nevertheless, no study presents an assessment of the torrefaction indexes correlating the potassium catalytic effects with the operating parameters (temperature and time) and the feedstock sensitivity, simultaneously. Therefore, this study examines the effect of biomass potassium impregnation on weight loss kinetics, employing different indexes such as the torrefaction severity index (TSI), the torrefaction catalytic effect index (TCEI), the catalytic index (CI) and modified torrefaction severity factor () to quantify the catalysis on torrefaction. Two hardwoods, Amapaí (Brosimum potabile Ducke) and Eucalyptus (Eucalyptus urophylla × E. camaldulensis), were demineralized and impregnated with different K2CO3 concentrations and then torrefied at 275 °C for 80 min. The process results enabled the assessment of the accuracy of the correlation between the indexes and the non-condensable volatile release during catalytic torrefaction. The TCEI provided the identification of two catalytic enhancement regions marked by 15 and 17 min holding time for Amapaí and Eucalyptus. The CI and presented R2 0.97 when validated against the TSI, supporting their accuracy as a performance indicator. The correlation between indexes and non-condensable gases presented significance for 88% of the evaluated cases. The results of the TSI, TCEI and CI indexes as performance indicators are conducive to quantifying the catalytic level for torrefaction operation, reactor design, and production of added-value biofuels.