Adsorptive Micellar Flocculation as an Efficient Method for Processing Soil Extracts Containing Both Surfactant and Polychlorinated Biphenyls: Practical Demonstration

The main purpose of the paper is to share the results and experience from processing soil extracts containing a high concentration of both anionic surfactant and polychlorinated biphenyls (PCBs) by use of method the called adsorptive micellar flocculation. The method is similar to coagulation, but t...

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Bibliographic Details
Published in:Water environment research 2008-01, Vol.80 (1), p.26-31
Main Authors: Šváb, Marek, Müllerová, Martina, Raschman, Robert
Format: Article
Language:English
Subjects:
adsorptive micellar flocculation
Aluminum
Aluminum Compounds - isolation & purification
anionic surfactant
Carbon dioxide
Chlorides
Colloids
Efficiency
Ferric Compounds - isolation & purification
Flocculation
leaching
Methods
Micelles
PCB
Polychlorinated biphenyls
Polychlorinated Biphenyls - analysis
remediation
Research methodology
RESEARCH PAPERS
Sedimentary soils
Soil - analysis
Soil colloids
soil extract
Soil Pollutants - isolation & purification
Soil pollution
Soil remediation
Soils
Sulfates
Surface-Active Agents - analysis
Surfactants
Water treatment plants
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Summary:The main purpose of the paper is to share the results and experience from processing soil extracts containing a high concentration of both anionic surfactant and polychlorinated biphenyls (PCBs) by use of method the called adsorptive micellar flocculation. The method is similar to coagulation, but the mechanism is more complicated. The flocculants examined in the laboratory section involved ferric chloride, aluminium chloride, ferric sulfate, and aluminum sulfate. It was observed that ferric chloride provides the best PCB removal efficiency from the extract. Subsequently, two extracts obtained from the pilot-scale demonstration of the PCBs leaching from the soils by the surfactant solution were processed by this method. The volume of the extracts processed was several hundred liters. The method proved it can remove PCBs from all extracts with a very high efficiency (greater than 99.99%). The residual PCB concentrations in solution were less than 1 μg/L.
ISSN:1061-4303
1554-7531
DOI:10.2175/106143007X184483