Relationship between total dissolved solids and electrical conductivity in Marcellus hydraulic fracturing fluids

Malcolm Taylor, Herschel Adams Elliott, Laura O. Navitsky

Research output: Contribution to journalArticle

Abstract

The production of hydraulic fracturing fluids (HFF) in natural gas extraction and their subsequent management leads to waste streams highly variable in total dissolved solids (TDS). TDS is often estimated from electrical conductivity (EC) assuming dissolved solids are predominantly ionic species of low enough concentration to yield a linear TDS-EC relationship. The composition and TDS-EC relationship of several fluids from Marcellus gas wells in Pennsylvania were assessed as part of investigating vegetation, soil, and groundwater impacts from accidental releases of HFF. Below EC of 75,000 ?S/cm, TDS (mg/L) can be estimated with little error assuming a 0.7 constant of proportionality. For more concentrated HFF, a curvilinear relationship is needed, while for hypersaline HFF, the use of an EC/TDS meter underestimated TDS by as much as 50%. A single linear relationship is unreliable as a predictor of brine strength and, in turn, potential water quality and soil impacts from accidental releases or the suitability of HFF for industrial wastewater treatment.

Original languageEnglish (US)
Pages (from-to)1998-2004
Number of pages7
JournalWater Science and Technology
Volume77
Issue number8
DOIs
StatePublished - Apr 1 2018

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Fracturing fluids
Hydraulic fluids
Hydraulic fracturing
electrical conductivity
fluid
Soils
Electric Conductivity
hydraulic fracturing
gas well
Wastewater treatment
brine
Water quality
Groundwater
Natural gas
soil
water quality
Fluids
groundwater
vegetation

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Water Science and Technology

Cite this

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Relationship between total dissolved solids and electrical conductivity in Marcellus hydraulic fracturing fluids. / Taylor, Malcolm; Elliott, Herschel Adams; Navitsky, Laura O.

In: Water Science and Technology, Vol. 77, No. 8, 01.04.2018, p. 1998-2004.

Research output: Contribution to journalArticle

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