Sorption of sulfolane and siisopropanolamine by soils, clays and aquifer materials

摘要

Thenatural gas sweetening chemicals, sulfolane and diisopropanolamine(DIPA), are highly water soluble and have leached into the ground water landfills and spills at some sour gas processing plant sites in western Canada. This paper reports on the results of batch equilibration studies designed to evaluate sulfolane and DIPA sorption parameters, which are of relevance to modeling fate and behavior of these compounds in the saturated zone. The sorbents included aquifer materials from three plant sites, reference montmorillonite and kaolinite, and six soils of various clay and organic matter contents. The DIPA sorption isotherms were curvilinear, the slope decreasing with increasing concentration.