skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Surface Tension Estimates for Droplet Formation in Slurries with Low Concentrations of Hydrophobic Particles, Polymer Flocculants or Surface-Active Contaminants

Abstract

In support of the K-Basin project, Pacific Northwest National Laboratory (PNNL) was requested to evaluate the appropriate surface tension value to use in models predicting the formation of droplets from spray leaks of K-Basin slurries. The specific issue was whether it was more appropriate to use the surface tension of pure water in model predictions for all plausible spray leaks or to use a lower value. The surface tension of K-Basin slurries is potentially affected not only by particles but by low concentrations of nonionic polyacrylamide flocculant and perhaps by contaminants with surfactant properties, which could decrease the surface tension below that of water. A lower surface tension value typically results in smaller droplets being formed with a larger fraction of droplets in the respirable size range, so using the higher surface tension value of pure water is not conservative and thus needs a strong technical basis.

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1024544
Report Number(s):
PNNL-20466
830403000; TRN: US201120%%50
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; POLYMERS; SLURRIES; SURFACE TENSION; SURFACTANTS; WATER

Citation Formats

Gauglitz, Phillip A., Mahoney, Lenna A., Blanchard, Jeremy, and Bamberger, Judith A. Surface Tension Estimates for Droplet Formation in Slurries with Low Concentrations of Hydrophobic Particles, Polymer Flocculants or Surface-Active Contaminants. United States: N. p., 2011. Web. doi:10.2172/1024544.
Gauglitz, Phillip A., Mahoney, Lenna A., Blanchard, Jeremy, & Bamberger, Judith A. Surface Tension Estimates for Droplet Formation in Slurries with Low Concentrations of Hydrophobic Particles, Polymer Flocculants or Surface-Active Contaminants. United States. doi:10.2172/1024544.
Gauglitz, Phillip A., Mahoney, Lenna A., Blanchard, Jeremy, and Bamberger, Judith A. Fri . "Surface Tension Estimates for Droplet Formation in Slurries with Low Concentrations of Hydrophobic Particles, Polymer Flocculants or Surface-Active Contaminants". United States. doi:10.2172/1024544. https://www.osti.gov/servlets/purl/1024544.
@article{osti_1024544,
title = {Surface Tension Estimates for Droplet Formation in Slurries with Low Concentrations of Hydrophobic Particles, Polymer Flocculants or Surface-Active Contaminants},
author = {Gauglitz, Phillip A. and Mahoney, Lenna A. and Blanchard, Jeremy and Bamberger, Judith A.},
abstractNote = {In support of the K-Basin project, Pacific Northwest National Laboratory (PNNL) was requested to evaluate the appropriate surface tension value to use in models predicting the formation of droplets from spray leaks of K-Basin slurries. The specific issue was whether it was more appropriate to use the surface tension of pure water in model predictions for all plausible spray leaks or to use a lower value. The surface tension of K-Basin slurries is potentially affected not only by particles but by low concentrations of nonionic polyacrylamide flocculant and perhaps by contaminants with surfactant properties, which could decrease the surface tension below that of water. A lower surface tension value typically results in smaller droplets being formed with a larger fraction of droplets in the respirable size range, so using the higher surface tension value of pure water is not conservative and thus needs a strong technical basis.},
doi = {10.2172/1024544},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jun 10 00:00:00 EDT 2011},
month = {Fri Jun 10 00:00:00 EDT 2011}
}

Technical Report:

Save / Share: