One-pot Activation And Pyrolysis Of Moroccan Gelidium ... - Hal Inrae
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One-pot activation and pyrolysis of Moroccan Gelidium sesquipedale red macroalgae residue: production of an efficient adsorbent biochar
Saida Tayibi (1, 2, 3, 4) , Florian Monlau (4) , Nour-Elhouda Fayoud (1, 2) , Abdallah. Oukarroum (2) , Youssef Zeroual (5) , Hassan Hannache (3, 2) , Abdellatif Barakat (1) Afficher plus de détails 1 UMR IATE - Ingénierie des Agro-polymères et Technologies Émergentes 2 UM6P - Université Mohammed VI Polytechnique = Mohammed VI Polytechnic University [Ben Guerir] 3 UH2C - Université Hassan II de Casablanca = University of Hassan II Casablanca = جامعة الحسن الثاني (ar) 4 APESA Cap Ecologia [Lescar] 5 Groupe OCP Saida Tayibi- Fonction : Auteur
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- ORCID : 0000-0003-4196-4351
Résumé
enOne-pot chemical activation and pyrolysis process was developed for biochar production from red macroalgae residue of Gelidium sesquipedale. The macroalgae residue was activated by various catalysts (KOH, NaOH, H3PO4, and CH4ON2) with the two concentrations (2.5 wt% and 5 wt%) using a pulverization system followed by slow pyrolysis at 500 °C. The activated biochars showed a porous morphology with an increase of water holding capacity compared to the unactivated one. The properties of activated biochar observed by further characterization (i.e., FTIR, SEM, TGA) revealed their feasibility to be used as an adsorbent. The results of adsorption experiment confirmed that adsorption was dependent not only on the surface area but also on the surface charge, and functional groups. The sorption performance of activated biochars (AcBC), in terms of the adsorption of methylene blue, was comparable to commercial activated charcoal (Norit®). NaOH (2.5 wt%)-activated biochar had the removal efficiency of 87% versus 97% for commercial activated charcoal.
Mots clés
en- Adsorption
- Slow pyrolysis
- Chemical activation
- Red macroalgae residue
Domaines
- Génie des procédés
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https://hal.inrae.fr/hal-02980962
Soumis le : mardi 27 octobre 2020-16:52:48
Dernière modification le : jeudi 12 juin 2025-16:30:03
Fichier non déposéDates et versions
hal-02980962 , version 1 (27-10-2020)Identifiants
- HAL Id : hal-02980962 , version 1
- DOI : 10.1007/s42773-019-00033-2
- WOS : 000647723800007
Citer
Saida Tayibi, Florian Monlau, Nour-Elhouda Fayoud, Abdallah. Oukarroum, Youssef Zeroual, et al.. One-pot activation and pyrolysis of Moroccan Gelidium sesquipedale red macroalgae residue: production of an efficient adsorbent biochar. Biochar, 2019, 1 (4), pp.401-412. ⟨10.1007/s42773-019-00033-2⟩. ⟨hal-02980962⟩Exporter
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