Rheological properties of nanofiltered Athabasca bitumen and Maya crude oil

0339660 - FZÚ 2010 RIV US eng J - Journal Article
Hasan, M.D.A. - Fulem, Michal - Bazyleva, A. - Shaw, J.M.
Rheological properties of nanofiltered Athabasca bitumen and Maya crude oil.
Energy and Fuels. Roč. 23, - (2009), s. 5012-5021. ISSN 0887-0624. E-ISSN 1520-5029
Institutional research plan: CEZ:AV0Z10100521
Keywords : viscosity * rheology * Athabasca bitumen * Maya crude oil * phase behavior * asphaltenes * nanofiltration
Subject RIV: JJ - Other Materials
Impact factor: 2.319, year: 2009

Complex viscosities of Athabasca bitumen (Alberta, Canada) and Maya crude oil (Mexico) samples, along with their permeates and retentates obtained by nanofiltration at 473 K through 5-, 10-, 20-, 50-, and 200-nm ceramic membranes, were investigated over the temperature interval of 298-373 K. The pentaneasphaltene content of the samples varied from 1.5 wt% to 57.2 wt %, whereas the asphaltene-free composition of the samples did not vary from the feed composition (within experimental error). At temperatures of <323 K, part of the maltenes of both of these hydrocarbon resources is solid. The solid maltene fraction is a function of temperature. If this additional solid is taken into account, the experimental relative viscosities for both Athabasca bitumen- and Maya crude-related samples fall on a single master curve, over the entire temperature interval, irrespective of the asphaltene content.
Permanent Link: http://hdl.handle.net/11104/0183116