Geosynthetics October/November 2021 - 6

EDITORIAL
Geosynthetics for CCR, PFAS
and energy applications
T
Todd R. Berger
Senior Editor
+ 1 651 225 6939
trberger@ifai.com
his issue of Geosynthetics magazine delves deep into two innovative uses
of geosynthetic clay liners (GCLs) in very different applications: coal
combustion residual (CCR) leachates and per- and polyfluoroalkyl substances
(PFAS) mitigation in landfills. We also examine three case studies of energy
companies using high-density polyethylene (HDPE) geomembranes for
flowback water in water evaporation/recycling ponds.
In the first feature, " Using Bentonite-Polymer Composite GCLs to Contain
CCR Leachates " by Jiannan Chen, Sarah A. Gustitus, Yu Tan and Craig H.
Benson, the authors perform tests to evaluate the hydraulic conductivity of
bentonite-polymer composite (BPC) GCLs for CCR leachates from coal-fired
power plants in the U.S.
In the second feature, " Hybrid Liners for Attenuation of PFAS in Landfill
Leachates, " authors Ryan Hackney and Daniel Gibbs identify a need to
develop a GCL that could be enhanced to further assist in the attenuation of
PFAS. The authors considered options including " modification to the synthetic
components of the composite, such as an additional layer of adsorptive
fabric or a unique blend of staple fibers in the cover geotextile layer and additives
that could be blended with the bentonite. The scope of the development
included a requirement to ensure the enhanced GCL retained the mechanical
and hydraulic properties of a traditional GCL, namely retention of interface
and internal shear strength and maintenance of the low level of hydraulic
conductivity expected from a secondary containment barrier. "
And, finally, we have, " Energy Industries Using HDPE Liners for Flowback
Water Evaporation/Recycling Ponds, " in which Neil C. Nowak outlines the
problem and solution to the " disposal and recycling of millions of gallons of
production water (brine water) and flowback water annually generated from
the oil and gas industry in an environmentally safe, less costly and efficient
manner. A technology that is effective and safe is the evaporation or storage
of the water in lined containment ponds after separation and removal of the
hydrocarbon component from the water. Three projects are the case studies for
this article, located near Wright, Wyo., Cisco, Utah, and Midland, Texas. They
were designed to evaporate or recycle water in geomembrane-lined ponds. "
And don't forget about 2021's first in-person geosynthetics event in the
U.S., GeoNashville, Nov. 4-5. Read about it in the Geosynthetics Conference
Watch and GMA News columns.
Geosynthetics
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IFAI MEMBERSHIP
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EDITORIAL ADVISORY COMMITTEE*
Melody A. Adams | Waste Management, USA
Sam R. Allen | TRI/Environmental, USA
Richard J. Bathurst | Royal Military College, Canada
Malek Bouazza | Monash University, Australia
Daniele A. Cazzuffi | CESI S.p.A., Italy
Archie Filshill | INOVA, USA
Ronald K. Frobel | R.K. Frobel & Associates, USA
Stephan M. Gale | Gale-Tec Engineering Inc., USA
John M. Gardner | Smith Gardner Inc., USA
Han-Yong Jeon | INHA University, Korea
Robert E. Mackey | S2L Inc., USA
Kent von Maubeuge | NAUE GmbH, Germany
Dhani Narejo | Narejo Inc., USA
Ian D. Peggs | I-Corp International, USA
Marco A. Sánchez | ML Ingeniería, Mexico
Mark E. Smith | RRD International Corp., USA
L. David Suits | LDS Geosynthetic Consulting Services, USA
Richard Thiel | Thiel Engineering, USA
Gary L. Willibey | ESP/SKAPS Industries, USA
Aigen Zhao | AGZ International LLC, USA
*The Editorial Advisory Committee reviews selected
papers, case histories and technical editorial copy in
its areas of expertise. Individual advisors do not review
every submission. Statements of fact and opinion are
the author's responsibility alone, and do not imply
the viewpoints of Geosynthetics, the Editorial Advisory
Committee, the editors or the association.
THE OFFICIAL PUBLICATION OF
Geosynthetics is an international, bimonthly publication for civil engineers, contractors and
government agencies in need of expert information on geosynthetic engineering solutions.
Geosynthetics presents articles from field professionals for innovative, exemplary practice.
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6
Geosynthetics | October November 2021
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Geosynthetics October/November 2021

Table of Contents for the Digital Edition of Geosynthetics October/November 2021

Geosynthetics October/November 2021 - Cover1
Geosynthetics October/November 2021 - Cover2
Geosynthetics October/November 2021 - 1
Geosynthetics October/November 2021 - 2
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Geosynthetics October/November 2021 - Cover3
Geosynthetics October/November 2021 - Cover4
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