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Development of a new solid catalyst for biodiesel production using local vegetable resources, adapted to the contexts of the West African countries

Ouédraogo Igor W.K., Mouras Sylvie, Changotadé Odilon A., Blin Joël. 2018. Development of a new solid catalyst for biodiesel production using local vegetable resources, adapted to the contexts of the West African countries. Waste and Biomass Valorization, 9 (10) : pp. 1893-1901.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q2, Sujet : ENVIRONMENTAL SCIENCES

Abstract : African countries are increasingly interested in biofuels to provide access to energy. The development of local technologies using local resources for biodiesel production can be a promising solution. This work is a first step towards the development of a simple process of transesterification of vegetable oil using local resources. The aim of this study is to explore new solid catalysts made of a potassium phase supported on char, for the production of biodiesel by transesterification of vegetable oil with ethanol. Catalysts were prepared by impregnating shea nut shells with four selected potassium precursors KCl, KOH, K2CO3, and KNO3, and then pyrolyzed. The thermal behaviour of the impregnated biomass as well as the potassium crystalline phase in the catalysts were investigated. The effects of the type of potassium precursor, pyrolysis temperature and the amount of catalyst on the conversion of oil to ethyl ester were analyzed. Results showed that increasing pyrolysis temperature enhanced the conversion of oil. Catalysts obtained from KOH and K2CO3 precursors displayed better activity than the other catalysts. The catalytic activity was found to be related to a K2CO3 crystalline phase. For conditions of transesterification at 10 wt% of catalyst, a reaction temperature of 70 °C and only 10 min reaction time, ethyl ester contents were 97.6 wt% for KOH and 99.1 wt% for K2CO3 based catalysts. Both catalysts allowed a good ethyl-ester yield in soft temperature and pressure conditions, and in a short time. (Résumé d'auteur)

Mots-clés Agrovoc : Biodiésel, Huile végétale, Estérification, Catalyseur, Potassium, Ester, Charbon actif, Jatropha curcas, Production énergétique

Mots-clés géographiques Agrovoc : Burkina Faso, France, Afrique occidentale

Mots-clés complémentaires : Transestérification, Ester éthylique

Mots-clés libres : Biodiesel, Activated carbon, Ethyl ester, Solid catalyst, Potassium

Classification Agris : Q60 - Processing of non-food or non-feed agricultural products
P06 - Renewable energy resources

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

Agence(s) de financement européenne(s) : European Commission

Auteurs et affiliations

  • Ouédraogo Igor W.K., 2IE (BFA)
  • Mouras Sylvie, CIRAD-PERSYST-UPR BioWooEB (FRA)
  • Changotadé Odilon A., 2IE (BFA)
  • Blin Joël, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0001-6715-2453 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/584924/)

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