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Prof. Anissa Khelfa
Assoc Prof, Dr

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Research Keywords & Expertise

0 Microwave
0 lignocellulosic biomass
0 pyrolysis and gasification
0 Extraction Technologies
0 pretreatment technologies

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Journal article
Published: 10 November 2020 in Processes
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Pyrolysis of pine wood sawdust was carried out using microwave-heating technology in the presence of activated carbon (AC). Experimental conditions were of 20 min processing time, 10 wt.% of AC, and a microwave power varying from 100 to 800 W. The results obtained showed that the microwave absorber allowed increasing the bio-oil yield up to 2 folds by reducing the charcoal fraction. The maximum temperature reached was 505 °C at 800 W. The higher heating values (HHV) of the solid residues ranged from 17.6 to 30.3 MJ/kg. The highest HHV was obtained for the sample heated at 800 W with 10 wt.% of AC, which was 33% higher than the non-charged sample heated at the same power. Furthermore, the addition of AC allowed showing the probable catalytic effect of the AC in the charged sample pyrolysis bio-oils.

ACS Style

Anissa Khelfa; Filipe Augusto Rodrigues; Mohamed Koubaa; Eugène Vorobiev. Microwave-Assisted Pyrolysis of Pine Wood Sawdust Mixed with Activated Carbon for Bio-Oil and Bio-Char Production. Processes 2020, 8, 1437 .

AMA Style

Anissa Khelfa, Filipe Augusto Rodrigues, Mohamed Koubaa, Eugène Vorobiev. Microwave-Assisted Pyrolysis of Pine Wood Sawdust Mixed with Activated Carbon for Bio-Oil and Bio-Char Production. Processes. 2020; 8 (11):1437.

Chicago/Turabian Style

Anissa Khelfa; Filipe Augusto Rodrigues; Mohamed Koubaa; Eugène Vorobiev. 2020. "Microwave-Assisted Pyrolysis of Pine Wood Sawdust Mixed with Activated Carbon for Bio-Oil and Bio-Char Production." Processes 8, no. 11: 1437.

Journal article
Published: 08 June 2020 in Sustainability
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A green reduction of nitrobenzene to aniline was carried out using lignocellulosic biomass as a hydrogen source in a subcritical polar protic solvent, such as water and alcohol. The method is simple to implement, inexpensive, and easily applicable on a larger scale. The present method does not demand elaborated experimental conditions nor any metal catalyst. Optimal conditions provided aniline with a 90% yield by reduction of nitrobenzene in the presence of sawdust impregnated by KOH in subcritical methanol at 240 °C for 6 h.

ACS Style

Sarra Tadrent; Anissa Khelfa; Christophe Len. Effect of KOH Pretreatment on Lignocellulosic Waste for the Reduction of Nitrobenzene to Aniline without Metal. Sustainability 2020, 12, 4665 .

AMA Style

Sarra Tadrent, Anissa Khelfa, Christophe Len. Effect of KOH Pretreatment on Lignocellulosic Waste for the Reduction of Nitrobenzene to Aniline without Metal. Sustainability. 2020; 12 (11):4665.

Chicago/Turabian Style

Sarra Tadrent; Anissa Khelfa; Christophe Len. 2020. "Effect of KOH Pretreatment on Lignocellulosic Waste for the Reduction of Nitrobenzene to Aniline without Metal." Sustainability 12, no. 11: 4665.