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The aim of this work is to explore the floculation behavior of asphaltenes (extracted from a deposit recovered from a Hassi-Messaoud oil well) in solution in toluene according to the polarity of the flocculating medium. The flocculation thresholds related to the addition of two flocculating agents of different polarities (n-heptane and acetone) for three asphaltenic concentrations are obtained by means of near infra-red absorption spectrophotometry. The Hildebrand solubility parameters of the flocculated asphaltenic fractions are deduced using the Donnagio method based on the Flory−Huggins theory. The results obtained indicate that the interactions between the flocculated asphaltenic molecules within the toluene/acetone mixture are weaker than those in the toluene/n-heptane mixture.
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Kradra Brahma Khadidja, ORCID: https://orcid.org/0000-0002-6351-8400
Bendedouch Dalila, ORCID: https://orcid.org/0000-0002-7060-5916
Bouhadda Youcef, ORCID: https://orcid.org/0000-0003-0376-7453
Bouanani Farida, ORCID: https://orcid.org/0000-0002-8083-6742
Bounaceur Boumedienne, ORCID: https://orcid.org/0000-0002-9200-0790
Sardi Amina, ORCID: https://orcid.org/0000-0002-2112-1544
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Kradra Brahma, K., Bendedouch, D., Bouhadda, Y. et al. Stability of Hassi-messaoud Asphaltenes in Media of Different Polarities. Pet. Chem. 59, 1190–1194 (2019). https://doi.org/10.1134/S0965544119110094
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DOI: https://doi.org/10.1134/S0965544119110094