Premium
The mechanisms of transfer of hydrophobic coated mineral matter particles from a hydrocarbon to an aqueous phase
Author(s) -
Prudich Michael E.,
Henry Joseph D.
Publication year - 1978
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690240504
Subject(s) - pulmonary surfactant , aqueous solution , adsorption , chemistry , aqueous two phase system , chemical engineering , phase (matter) , hydrocarbon , particle (ecology) , emulsion , organic matter , organic chemistry , geology , biochemistry , oceanography , engineering
A solid/liquid separation process based on the transfer of hydrophobic coated mineral particles from a hydrocarbon to an aqueous phase is described. This process could be used, for example, to remove mineral matter from coal derived liquids in order to meet fuel specifications. A model system which involves hydrophobic, asphaltic, coated mineral matter particles in a model liquid, xylene, was used in conjunction with the mechanistic studies. The mineral matter distribution coefficient to the aqueous phase decreases rather than increases with time in batch experiments. Five asymptotic models based on the fate of the surface active chemical at long time are investigated. Included were adsorption on the mineral matter particle, adsorption at the oil/water interface, distribution of the surfactant to the aqueous phase, complete detergency, and partial detergency. Experimental data on the influence of surfactant concentration, contact time, water/oil ratio, and shear are consistent only with the partial detergency model.