Insights into the subsurface transport of As(V) and Se(VI) in produced water from hydraulic fracturing using soil samples from Qingshankou Formation, Songliao Basin, China

Season S. Chen, Yuqing Sun, Daniel C.W. Tsang, Nigel J.D. Graham, Yong Sik Ok, Yujie Feng, Xiang Dong Li

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Produced water is a type of wastewater generated from hydraulic fracturing, which may pose a risk to the environment and humans due to its high ionic strength and the presence of elevated concentrations of metals/metalloids that exceed maximum contamination levels. The mobilization of As(V) and Se(VI) in produced water and selected soils from Qingshankou Formation in the Songliao Basin in China were investigated using column experiments and synthetic produced water whose quality was representative of waters arising at different times after well creation. Temporal effects of produced water on metal/metalloid transport and sorption/desorption were investigated by using HYDRUS-1D transport modelling. Rapid breakthrough and long tailings of As(V) and Se(VI) transport were observed in Day 1 and Day 14 solutions, but were reduced in Day 90 solution probably due to the elevated ionic strength. The influence of produced water on the hydrogeological conditions (i.e., change between equilibrium and non-equilibrium transport) was evidenced by the change of tracer breakthrough curves before and after the leaching of produced water. This possibly resulted from the sorption of polyacrylamide (PAM (-CH2CHCONH2-)n) onto soil surfaces, through its use as a friction reducer in fracturing solutions. The sorption was found to be reversible in this study. Minimal amounts of sorbed As(V) were desorbed whereas the majority of sorbed Se(VI) was readily leached out, to an extent which varied with the composition of the produced water. These results showed that the mobilization of As(V) and Se(VI) in soil largely depended on the solution pH and ionic strength. Understanding the differences in metal/metalloid transport in produced water is important for proper risk management.

Original languageEnglish
Pages (from-to)449-456
Number of pages8
JournalEnvironmental Pollution
Volume223
DOIs
Publication statusPublished - 2017 Jan 1
Externally publishedYes

Fingerprint

Hydraulic fracturing
China
Soil
Soils
Water
Metalloids
Ionic strength
Osmolar Concentration
Sorption
Metals
Pulse amplitude modulation
Produced Water
Hydraulic Fracking
Friction
Water Quality
Tailings
Risk Management
Waste Water
Risk management
Polyacrylates

Keywords

  • Arsenic
  • Hydraulic fracturing
  • Non-equilibrium transport
  • Produced water
  • Selenium
  • Solution chemistry

ASJC Scopus subject areas

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

Insights into the subsurface transport of As(V) and Se(VI) in produced water from hydraulic fracturing using soil samples from Qingshankou Formation, Songliao Basin, China. / Chen, Season S.; Sun, Yuqing; Tsang, Daniel C.W.; Graham, Nigel J.D.; Ok, Yong Sik; Feng, Yujie; Li, Xiang Dong.

In: Environmental Pollution, Vol. 223, 01.01.2017, p. 449-456.

Research output: Contribution to journalArticle

Chen, Season S. ; Sun, Yuqing ; Tsang, Daniel C.W. ; Graham, Nigel J.D. ; Ok, Yong Sik ; Feng, Yujie ; Li, Xiang Dong. / Insights into the subsurface transport of As(V) and Se(VI) in produced water from hydraulic fracturing using soil samples from Qingshankou Formation, Songliao Basin, China. In: Environmental Pollution. 2017 ; Vol. 223. pp. 449-456.
@article{075d3ab8639b402ba73615de3380e769,
title = "Insights into the subsurface transport of As(V) and Se(VI) in produced water from hydraulic fracturing using soil samples from Qingshankou Formation, Songliao Basin, China",
abstract = "Produced water is a type of wastewater generated from hydraulic fracturing, which may pose a risk to the environment and humans due to its high ionic strength and the presence of elevated concentrations of metals/metalloids that exceed maximum contamination levels. The mobilization of As(V) and Se(VI) in produced water and selected soils from Qingshankou Formation in the Songliao Basin in China were investigated using column experiments and synthetic produced water whose quality was representative of waters arising at different times after well creation. Temporal effects of produced water on metal/metalloid transport and sorption/desorption were investigated by using HYDRUS-1D transport modelling. Rapid breakthrough and long tailings of As(V) and Se(VI) transport were observed in Day 1 and Day 14 solutions, but were reduced in Day 90 solution probably due to the elevated ionic strength. The influence of produced water on the hydrogeological conditions (i.e., change between equilibrium and non-equilibrium transport) was evidenced by the change of tracer breakthrough curves before and after the leaching of produced water. This possibly resulted from the sorption of polyacrylamide (PAM (-CH2CHCONH2-)n) onto soil surfaces, through its use as a friction reducer in fracturing solutions. The sorption was found to be reversible in this study. Minimal amounts of sorbed As(V) were desorbed whereas the majority of sorbed Se(VI) was readily leached out, to an extent which varied with the composition of the produced water. These results showed that the mobilization of As(V) and Se(VI) in soil largely depended on the solution pH and ionic strength. Understanding the differences in metal/metalloid transport in produced water is important for proper risk management.",
keywords = "Arsenic, Hydraulic fracturing, Non-equilibrium transport, Produced water, Selenium, Solution chemistry",
author = "Chen, {Season S.} and Yuqing Sun and Tsang, {Daniel C.W.} and Graham, {Nigel J.D.} and Ok, {Yong Sik} and Yujie Feng and Li, {Xiang Dong}",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.envpol.2017.01.044",
language = "English",
volume = "223",
pages = "449--456",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Insights into the subsurface transport of As(V) and Se(VI) in produced water from hydraulic fracturing using soil samples from Qingshankou Formation, Songliao Basin, China

AU - Chen, Season S.

AU - Sun, Yuqing

AU - Tsang, Daniel C.W.

AU - Graham, Nigel J.D.

AU - Ok, Yong Sik

AU - Feng, Yujie

AU - Li, Xiang Dong

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Produced water is a type of wastewater generated from hydraulic fracturing, which may pose a risk to the environment and humans due to its high ionic strength and the presence of elevated concentrations of metals/metalloids that exceed maximum contamination levels. The mobilization of As(V) and Se(VI) in produced water and selected soils from Qingshankou Formation in the Songliao Basin in China were investigated using column experiments and synthetic produced water whose quality was representative of waters arising at different times after well creation. Temporal effects of produced water on metal/metalloid transport and sorption/desorption were investigated by using HYDRUS-1D transport modelling. Rapid breakthrough and long tailings of As(V) and Se(VI) transport were observed in Day 1 and Day 14 solutions, but were reduced in Day 90 solution probably due to the elevated ionic strength. The influence of produced water on the hydrogeological conditions (i.e., change between equilibrium and non-equilibrium transport) was evidenced by the change of tracer breakthrough curves before and after the leaching of produced water. This possibly resulted from the sorption of polyacrylamide (PAM (-CH2CHCONH2-)n) onto soil surfaces, through its use as a friction reducer in fracturing solutions. The sorption was found to be reversible in this study. Minimal amounts of sorbed As(V) were desorbed whereas the majority of sorbed Se(VI) was readily leached out, to an extent which varied with the composition of the produced water. These results showed that the mobilization of As(V) and Se(VI) in soil largely depended on the solution pH and ionic strength. Understanding the differences in metal/metalloid transport in produced water is important for proper risk management.

AB - Produced water is a type of wastewater generated from hydraulic fracturing, which may pose a risk to the environment and humans due to its high ionic strength and the presence of elevated concentrations of metals/metalloids that exceed maximum contamination levels. The mobilization of As(V) and Se(VI) in produced water and selected soils from Qingshankou Formation in the Songliao Basin in China were investigated using column experiments and synthetic produced water whose quality was representative of waters arising at different times after well creation. Temporal effects of produced water on metal/metalloid transport and sorption/desorption were investigated by using HYDRUS-1D transport modelling. Rapid breakthrough and long tailings of As(V) and Se(VI) transport were observed in Day 1 and Day 14 solutions, but were reduced in Day 90 solution probably due to the elevated ionic strength. The influence of produced water on the hydrogeological conditions (i.e., change between equilibrium and non-equilibrium transport) was evidenced by the change of tracer breakthrough curves before and after the leaching of produced water. This possibly resulted from the sorption of polyacrylamide (PAM (-CH2CHCONH2-)n) onto soil surfaces, through its use as a friction reducer in fracturing solutions. The sorption was found to be reversible in this study. Minimal amounts of sorbed As(V) were desorbed whereas the majority of sorbed Se(VI) was readily leached out, to an extent which varied with the composition of the produced water. These results showed that the mobilization of As(V) and Se(VI) in soil largely depended on the solution pH and ionic strength. Understanding the differences in metal/metalloid transport in produced water is important for proper risk management.

KW - Arsenic

KW - Hydraulic fracturing

KW - Non-equilibrium transport

KW - Produced water

KW - Selenium

KW - Solution chemistry

UR - http://www.scopus.com/inward/record.url?scp=85009895228&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85009895228&partnerID=8YFLogxK

U2 - 10.1016/j.envpol.2017.01.044

DO - 10.1016/j.envpol.2017.01.044

M3 - Article

C2 - 28122672

AN - SCOPUS:85009895228

VL - 223

SP - 449

EP - 456

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

ER -