Factors influencing induced air flotation

Journal Article · Sun Jan 01 04:00:00 EST 1978 · AIChE Symp. Ser.; (United States)

OSTI ID:6568288

Burkhardt, C W; Janes, J V; Griffiths, D W

Polyelectrolyte-aided induced air flotation was carried out with two cationic polyelectrolytes from Petrolite Corp., Tretolite Division and a crude oil-in-water emulsion as test fluid in a bench model induced air flotation cell at 25/sup 0/C. Although the kinetics generally remained first order in the presence of added polyelectrolytes, the observed first-order rate constant increased rapidly as the polyelectrolyte concentration was raised from zero to some intermediate value, then leveled off, or in cases of overtreatment, decreased with a further increase in polyelectrolyte concentration. Translated to half-lives, the effect of added polyelectrolyte is, in this case, to reduce time required to achieve a 50Vertical Bar3< reduction in the initial oil level from more than 17 to less than 0.5 min. Polyelectrolyte performance improves as the ionic strength of the aqueous medium increases. A distinct inverse relationship exists between polyelectrolyte performance and a polymer-solvent interaction energies. Thus, the performance of a flotation aid is controlled in part by its affinity for the oil/water interface.

• Research Organization: Petrolite Corp.
• OSTI ID: 6568288
• Journal Information: AIChE Symp. Ser.; (United States), Journal Name: AIChE Symp. Ser.; (United States) Vol. 74:178; ISSN ACSSC
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020800* -- Petroleum-- Waste Management
ELECTROLYTES
ENERGY SOURCES
EVALUATION
FLOTATION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
INDUSTRY
KINETICS
LIQUID WASTES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM INDUSTRY
REACTION KINETICS
SEPARATION PROCESSES
WASTE WATER
WASTES
WATER