NDLI: Permeability changes by surfactant solution: an experimental study to represent wastewater loss from sewers to saturated soil

Content Provider	Springer Nature Link
Author	Nikpay, Mitra Lazik, Detlef Krebs, Peter
Copyright Year	2015
Abstract	Leakage of wastewater from sewer lines may result in contamination of soil and groundwater. The widespread use of detergents is causing relatively high concentrations of surfactants in wastewater. We studied the effects of surfactants on the infiltration process of wastewater through soil. To that aim, in a laboratory experiment three micro-pore glass filters were installed. A laboratory wastewater substitute was created by adding a commercially available detergent to degassed tap water producing surfactant concentrations of 100, 200 and 400 mg l$^{−1}$. Rapid changes in permeability after using the surfactant solution were detected. These were further examined during a process of washing the glass filters with water. The experimental results indicated that changes in permeability were induced by significant adsorption of surfactant molecules on the solids surfaces and thus reducing the size of the pores. Higher levels of permeability changes were detected for higher surfactant concentrations. Additionally, the efficiency of washing process of an adsorbed surfactant molecular layer at the pore surfaces was greater that before the critical micelle concentration.
Starting Page	8443
Ending Page	8450
Page Count	8
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	73
Issue Number	12
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-01-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Exfiltration Interface Sewer Permeability Surfactant Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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