Geosynthetics October/November 2021 - 27

already serving as the secondary barrier
to leakage within current lining systems,
as we understand more about the effects
on the environment and human health
from emerging contaminants, an hGCL
is well positioned to become best practice
design to polish any leakage emanating
from our waste facilities.
PMB GCL Leachate E PFAS Attenuation
References
Bansal, R. C., and Meenakshi, G. (2005). Activated carbon
adsorption, CRC Press, Boca Raton, Fla.
Bouazza, A. (2021). " Interaction between PFASs and
geosynthetic liners: Current status and the way
forward. " Geosynthetics International, 28(2), 214-223.
Gagliano, E., Sgroi, M., Vagliasindi, F. G., and Roccaro, P.
(2020). " Removal of poly- and perfluoroalkyl substances
(PFAS) from water by adsorption: Role of PFAS chain
length, effect of organic matter and challenges in
adsorbent regeneration. " Water Research, 171.
Gallen, C., Drage, D., Eaglesham, G., Grant, S., Bowman,
M., and Mueller, J. F. (2017). " Australia-wide assessment
of perfluoroalkyl substances (PFASs) in landfill
leachates. " Jour. of Hazardous Materials, 331, 32-141.
Gates, W. P., MacLeod, A. J., Fehervari, A., Bouazza,
A., Gibbs, D., Hackney, R., Callahan, D. L., and Watts,
M. (2020). " Interactions of per- and polyfluoralkyl
substances (PFAS) with landfill liners. " Advances in
Environmental and Engineering Research, 1(4), 40.
Goss, K. U. (2008). " The pKa values of PFOA and other
highly fluorinated carboxylic acids. " Environmental
Science and Technology, 42(2), 456-458.
Kah, M., Sigmund, G., Xiao, F., and Hofmann, T. (2017).
" Sorption of ionizable and ionic organic compounds
to biochar, activated carbon and other carbonaceous
materials. " Water Research, 124, 673-692.
McNamara, J. D., Franco, R., Mimna, R., and Zappa, L.
(2018). " Comparison of activated carbons for removal
of perfluorinated compounds from drinking water. "
Jour. American Water Works Association, 110(1), E2-E14.
Nowicki, H., Schuliger, W., Nowicki, G., and Sherman, B.
(2014). " Evaluation of activated carbon performance. "
Water Conditioning and Purification Magazine. www
.wcponline.com/2014/06/17/evaluation-activatedcarbon-performance.
Saeidi,
N., Kopinke, F. D., and Georgi, A. (2020).
" Understanding the effect of carbon surface chemistry
on adsorption of perfluorinated alkyl substances. "
Chemical Engineering Jour., 381.
Zdravkov, B. D., Čermák, J. J., Šefara, M., and Janků, J.
(2007). " Pore classification in the characterization of
porous materials: A perspective. " Central European Jour.
of Chemistry, 5(2), 385-395. G
>> For more, search PFAS
at www.GeosyntheticsMagazine.com.
www.GeosyntheticsMagazine.com
27
Effluent Sample #
Perfluorobutane sulfonic acid (PFBS)
Perfluorooctane sulfonic acid (PFOS)
Perfluorohexanoic acid (PFHxA)
4:2 Fluorotelomer sulfonic acid (4:2 FTS)
Perfluoropentane sulfonic acid (PFPeS)
Perfluorobutanoic acid (PFBA)
FIGURE 8 PFAS concentration in the hGCL effluent throughout the permeation with Leachate E
Perfluoroheptanoic acid (PFHpA)
6:2 Fluorotelomer sulfonic acid (6:2 FTS)
Perfluorohexane sulfonic acid (PFHxS)
Perfluoropentanoic acid (PFPeA)
Perfluorooctanoic acid (PFOA)
Effluent Sample #
Perfluorobutane sulfonic acid (PFBS)
Perfluorooctane sulfonic acid (PFOS)
Perfluorohexanoic acid (PFHxA)
6:2 Fluorotelomer sulfonic acid (6:2 FTS)
Perfluoropentane sulfonic acid (PFPeS)
Perfluorobutanoic acid (PFBA)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexane sulfonic acid (PFHxS)
Perfluoropentanoic acid (PFPeA)
Perfluorooctanoic acid (PFOA)
FIGURE 7 PFAS concentration in the PMB GCL effluent throughout the permeation with Leachate E
hGCL PFAS Leachate E PFAS Attenuation
Concentration (μg/L)
Concentration (μg/L)
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Geosynthetics October/November 2021

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