Characteristics of Kaolinitic Raw Materials from the Lokoundje River (Kribi, Cameroon) for Ceramic Applications

Autor: Paul-Désiré Ndjigui, Jean Aimé Mbey, Soureiyatou Fadil-Djenabou, Vincent Laurent Onana, Elie Constantin Bayiga, Christophe Enock Embom, Georges-Ivo Ekosse

Publikováno v: Applied Sciences, Vol 11, Iss 13, p 6118 (2021)

Eight kaolinitic materials from the Lokoundje River at Kribi were sampled and investigated for their physical, chemical, mineralogical and thermal characteristics in order to evaluate their potential suitability as raw materials in ceramics. The Loko

Externí odkaz: https://doaj.org/article/b1c3e600642c40a2a410f39138af9c86

Interactions between Humic Acid and the Mineral Surface of Laterite at Different Environmental pH

Autor: Emmanuel Djoufac Woumfo, Lacina Coulibaly, Tiangoua Kone, Sandotin Lassina Coulibaly, Jean Aimé Mbey, Yoh Coulibaly

Publikováno v: Journal of Global Ecology and Environment. :40-50

Organic compounds such as humic substances in the natural environment, especially in aquatic environments, are source of environmental problems. The stability of humic compounds in the soil is due to their adsorption on colloid surfaces through react

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8bb7c4fc2c37832ec5ddb9c5a9f87395
https://doi.org/10.56557/jogee/2023/v17i38196

Intercalation of Ciprofloxacin in Naturally Occurring Smectite from Bana: Potentiality as Drug Delivery System and Antimicrobial Effects on Escherichia coli and Staphylococcus aureus

Autor: Maryse Bacquet, Carine Feudjio Memenfo, Mickaël Maton, Jean Aimé Mbey, Nicolas Tabary, Daniel Njopwouo, Stephanie Degoutin, Bernard Martel, Frederic Cazaux

Publikováno v: Journal of Materials Science and Chemical Engineering. :21-40

Ciprofloxacin (CFX) was loaded on Bana clay (Cameroon) and CFX loadedclays have been evaluated as drug delivery system. Raw clays and CFX loaded compounds have been characterized by some physico-chemicals methods. In vitro release studies have been d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e2e497ca66b42d326ca314f3789eb50d
https://doi.org/10.4236/msce.2021.98003

A comparative study of some kaolinites surface properties

Autor: Angelina Razafitianamaharavo, Céline Caillet, Frédéric Villiéras, Fabien Thomas, Jean Aimé Mbey

Publikováno v: Applied Clay Science
Applied Clay Science, Elsevier, 2019, 172, pp.135-145. ⟨10.1016/j.clay.2019.03.005⟩

International audience; The surface properties of five kaolinites of various origins were analyzed using potentiometric titration, electrokinetic measurements and low-pressure gas adsorption associated to derivative isotherm summation (DIS) modeling.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::858ed0e4d3ae64253229f32e3d0da660
https://doi.org/10.1016/j.clay.2019.03.005

Phosphoric acid activation of volcanic ashes: Influence of the molar ratio R = (MgO + CaO) / P2O5 on reactivity of volcanic ash and strength of obtained cementitious material

Autor: Antoine Elimbi, Martin Cyr, Jean Aimé Mbey, Rafael Andres Robayo-Salazar, R. Mejía de Gutiérrez, Jean Baenla, B.I. Djon Li Ndjock

Publikováno v: Journal of Building Engineering
Journal of Building Engineering, Elsevier, 2021, 33, pp.101879. ⟨10.1016/j.jobe.2020.101879⟩
Journal of Building Engineering, 2021, 33, pp.101879. ⟨10.1016/j.jobe.2020.101879⟩

Generally, the phosphoric acid-activated systems use aluminosilicates as raw material (e.g., metakaolin); and the addition of alkali metals (e.g., Mg or Ca) contributes to obtain best properties. Volcanic ash (Va) is an aluminosilicate globally avail

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af8e384ee8de539f1e9c47a12b0f4866
https://hal.insa-toulouse.fr/hal-03123627