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Adsorption Isotherm of BET Nitrogen of Concretes with Consolidated Soil by Sugar Cane Molasses



Author(s)

Nice Ngouallat Mfoutou¹, Narcisse Malanda¹, Erman Eloge Nzaba Madila² and Paul Louzolo-Kimbembe^1,3

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DOI:10.17265/2161-6221/2022.7-9.002

1. National Upper Polytechnic School, Marien Ngouabi University, Brazzaville BP. 69, Congo
2. Department of Chemistry, Biochemistry and Physics and Hydrogen Research Institute, University of Quebec, Trois-Rivières, Québec, G9A5H7, Canada
3. Upper School of Education, Marien Ngouabi University, Brazzaville BP. 69, Congo

Sugar cane molasses is often poured out on roads with soil in the city of Nkayi, Republic of Congo in order to reduce the dust. Nitrogen physical adsorption has allowed us to collect information on the state of the accessible total area according to the quantity of sugar cane molasses. The adsorption isotherms, the specific area, the adsorbed quantity of nitrogen on a Q_m mono layer, the number of molecules constituting the adsorbed sugar cane molasses (n′) have been examined. The obtained results show that the quantity of sugar cane molasses in the material does not modify the adsorption isotherm of nitrogen of type IV that remains and a hysteria loop of type H4 in all samples, this justifies the monocoat-multicoat adsorption mechanism with capillary condensation and mesopores presence in the structure of materials. Materials with elaborated raw soil by clayey fine soil used are mesoporous materials. More of 50×10¹⁸ molecules constituting sugar cane molasses occupy the extreme area accessible to soil clay, without occupying on accessible sites.

Isotherm, adsorption, BET (Brunauer, Emmet, and Teller) specific area, clayey fine soil, sugar cane molasses.