Grantee Research Project Results
Surface Chemistry of Oil/Soil/Water Systems for Improved Oil Removal from Contaminated Soil by Air-Sparged Hydrocyclone Flotation
EPA Grant Number: R825396Title: Surface Chemistry of Oil/Soil/Water Systems for Improved Oil Removal from Contaminated Soil by Air-Sparged Hydrocyclone Flotation
Investigators: Miller, Jan D. , Drelich, Jaroslaw
Current Investigators: Miller, Jan D.
Institution: University of Utah
EPA Project Officer: Packard, Benjamin H
Project Period: January 20, 1997 through January 19, 2000 (Extended to January 19, 2001)
Project Amount: $315,706
RFA: Exploratory Research - Water Chemistry and Physics (1996) RFA Text | Recipients Lists
Research Category: Water , Land and Waste Management , Safer Chemicals
Description:
The goal of this project is to develop a novel, inexpensive, and fast cleanup process to remove oils from contaminated soil and sediment using the air-sparged hydrocyclone (ASH) flotation technology developed at the University of Utah. Three major areas associated with oil/soil/water systems have been identified in order to undertake a comprehensive study and realize the proposed research objective: (i) selection of surface and solution chemistry conditions for oil release and flotation, (ii) optimization of froth stability in relation to oil flotation in ASH flotation units, and (iii) specification of operating variables of ASH technology for cleanup of oily soil. Comprehensive fundamental studies will center on the surface chemistry of oil/soil/water systems, including examination of physicochemical properties, surface hydrophobicity, oil/soil interactions, stability of oil-in-water emulsions, release of oil from mineral surfaces, coalescence of oil droplets with air bubbles, oil spreading on air bubble surfaces, the effect of oil on foam stability, and flotation response. Based on these surface chemistry studies, an exploratory series of flotation tests in a 2-inch ASH will be carried out to demonstrate/evaluate the surface chemistry controlled ASH flotation technology for the deoiling of various contaminated soils. It is expected that efficient separation of oil from contaminated soil can be achieved by ASH flotation at an extremely high specific capacity (200-400 gpm/ft 3), if the appropriate surface chemistry conditions can be established.
Publications and Presentations:
Publications have been submitted on this project: View all 9 publications for this projectJournal Articles:
Journal Articles have been submitted on this project: View all 3 journal articles for this projectSupplemental Keywords:
RFA, Scientific Discipline, Waste, Water, Contaminated Sediments, Physics, Remediation, Environmental Chemistry, Chemistry, Hazardous Waste, Engineering, Hazardous, sediment treatment, flotation, contaminant transport, surface chemistry, contaminated sediment, contaminated soil, oil spills, hydrology, oil removal, air sprayed hydrocycloneProgress and Final Reports:
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.