Title :
Removal by surfactants of asphalt adsorbed onto clays
Author :
Jada, A. ; Hamieh, T.
Author_Institution :
Inst. de Chimie des Surfaces et Interfaces, Mulhouse, France
Abstract :
Adsorption isotherms of asphalt from water saturated toluene onto various kaolinite and illite clays were determined. It is shown that kaolinite surface adsorbs more asphalt than illite for the both sodium (Na+) and calcium (Ca2+) exchanged forms. Further adsorption isotherms of anionic surfactants such as sodium dodecylbenzene sulphonate (SDBS) and sodium dodecyl sulphate (SDS) from water onto asphalt covered kaolinite and iltite clays were studied. It was found beyond the surfactant´s CMC a much lower adsorption of SDBS as compared to SDS. Finally desorption of asphalt from various clays in the presence of SDBS and SDS surfactants was investigated and it was found that SDBS surfactant desorbs large amount of asphalt from clays as compared to SDS
Keywords :
clay; geochemistry; geology; mining; organic compounds; petroleum industry; surfactants; adsorbed chemical; adsorption; anionic surfactants; asphalt; clay; desorption; exploitation; geochemistry; geology; illite; isotherm; kaolinite; mining; oil; petroleum; recovery process; sodium dodecyl sulphate; sodium dodecyllienzene sulphonate; soil; surfactant removal; water saturated toluene; Asphalt; Calcium; Crystallization; Floods; Hydrocarbon reservoirs; Minerals; Organic compounds; Petroleum; Soil; Surface contamination;
Conference_Titel :
Environment and Solar, 2000 Mediterranean Conference for
Conference_Location :
Beirut
Print_ISBN :
0-7803-7117-8
DOI :
10.1109/CMPLES.2000.939885
