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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 24 — Aug. 20, 2001
  • pp: 4028–4035

Light-Scattering Study of Petroleum Asphaltene Aggregation

Yevgeniy G. Burya, Igor K. Yudin, Victor A. Dechabo, Victor I. Kosov, and Mikhail A. Anisimov  »View Author Affiliations


Applied Optics, Vol. 40, Issue 24, pp. 4028-4035 (2001)
http://dx.doi.org/10.1364/AO.40.004028


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Abstract

Dynamic light scattering with an original optical scheme has been used for the investigation of opaque (strongly light-absorbing) asphaltene colloids in crude oils and hydrocarbon mixtures. Diffusion-limited aggregation and reaction-limited aggregation as well as a crossover between these two regimes have been observed. A simple interpolation for the crossover kinetics is proposed. Asphaltene colloidal structures, originally persisting in crude oils, have been detected. Addition of a precipitant above a threshold induces asphaltene aggregation. Depending on the nature of the precipitant, different crude oils respond differently on its addition: (a) exponential-in-time growth of aggregates to huge flocks or (b) fast formation of stable-in-size particles.

© 2001 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(000.2190) General : Experimental physics

Citation
Yevgeniy G. Burya, Igor K. Yudin, Victor A. Dechabo, Victor I. Kosov, and Mikhail A. Anisimov, "Light-Scattering Study of Petroleum Asphaltene Aggregation," Appl. Opt. 40, 4028-4035 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-24-4028


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