Stabilization/solidification treatments for filter cake, a by-product of asphaltene gasification
Abstract
Filter Cake, which contains leachable nickel and vanadium above the criteria in the
Alberta Waste Control Regulation, is produced at an oil sands facility operated by Nexen Inc.
and is currently being disposed in a landfill. Bench scale and field tests were performed with
stabilization/solidification (S/S) treatment reagents such as Portland cement, fly ash, elemental
sulphur, and CETCO Oilfield Service’s proprietary reagents to assess their efficacy at reducing
leachable metals in Filter Cake. The CETCO reagents were the most effective treatment for
reducing leachable nickel and vanadium in Filter Cake. Treatments with Portland cement were
successful in bench scale tests, but inconsistent in field tests. The inconsistent results obtained
for Portland cement may have been due to interferences of the cement reactions from factors
such as fine particulates. S/S treatments of Filter Cake present a viable waste management
option. However, the associated reduced cost and environmental impacts were not substantial.
Related items
Showing items related by title, author, creator and subject.
-
[Post-print] New applications of M-matrix to stability of high-order linear delayed equations
Amster, Pablo; Idels, Lev (Elsevier, 2016-04)A substitution is introduced which exploits the parameters of the high-order delayed linear non-autonomous models and consequently allows the use of the M-matrix methods for the stability analysis. To demonstrate the ... -
Stability analysis of periodic Fox production models
Idels, Lev (Applied Mathematics Institute, University of Alberta, 2006)In this paper we introduce a nonlinear Fox surplus production model in a periodic environment. The existence and stability of the periodic solutions of nonautonomous nonlinear differential equation (A) are analyzed. ... -
[Pre-print] Stability of a time-varying fishing model with delay
Berezansky, Leonid; Idels, Lev (Elsevier, 2008-05)We introduce a delay differential equation model which describes how fish are harvested (see Abstract Equation Image). In our previous studies we investigated the persistence of the equation and existence of a periodic ...