Abstract

Nitrate contamination in surface and ground waters is one of this century's major engineering challenges due to negative environmental impacts and the risk to human health in drinking water. Electrochemical reduction is a promising water treatment technology to manage nitrate in drinking water. This critical review describes the fundamental principles necessary to understand electrochemical reduction technologies and how to apply them. The focus is on electrochemical nitrate reduction mechanisms and pathways that form undesirable products (nitrite, ammonium) or the more desirable product (dinitrogen). Factors influencing the conversion rates and selectivity of electrochemical nitrate reduction, such as electrode material and operating parameters, are also described. Finally, the applicability for treating drinking water matrices using electrochemical processes is analyzed, including existing implementation of commercial treatment systems. Overall, this critical review contributes to the understanding of the potential applications and constraints of electrochemical reduction to manage nitrate in drinking waters and highlights directions for future research required for implementation.

Original languageEnglish (US)
Pages (from-to)546-568
Number of pages23
JournalApplied Catalysis B: Environmental
Volume236
DOIs
StatePublished - Nov 15 2018

Fingerprint

Water treatment
Nitrates
water treatment
Potable water
Drinking Water
nitrate
drinking water
Nitrites
Surface waters
Ammonium Compounds
nitrite
Environmental impact
Groundwater
electrode
Contamination
environmental impact
ammonium
Health
surface water
engineering

Keywords

  • Cathodic reduction
  • Electrochemical processes
  • Nanotechnology
  • Nitrogen cycle
  • Water treatment

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

Cite this

Electrocatalytic reduction of nitrate : Fundamentals to full-scale water treatment applications. / GARCIA SEGURA, Sergio; Lanzarini-Lopes, Mariana; Hristovski, Kiril; Westerhoff, Paul.

In: Applied Catalysis B: Environmental, Vol. 236, 15.11.2018, p. 546-568.

Research output: Contribution to journalReview article

@article{ce99de498b4e404db0a5d0afe80ca6a0,
title = "Electrocatalytic reduction of nitrate: Fundamentals to full-scale water treatment applications",
abstract = "Nitrate contamination in surface and ground waters is one of this century's major engineering challenges due to negative environmental impacts and the risk to human health in drinking water. Electrochemical reduction is a promising water treatment technology to manage nitrate in drinking water. This critical review describes the fundamental principles necessary to understand electrochemical reduction technologies and how to apply them. The focus is on electrochemical nitrate reduction mechanisms and pathways that form undesirable products (nitrite, ammonium) or the more desirable product (dinitrogen). Factors influencing the conversion rates and selectivity of electrochemical nitrate reduction, such as electrode material and operating parameters, are also described. Finally, the applicability for treating drinking water matrices using electrochemical processes is analyzed, including existing implementation of commercial treatment systems. Overall, this critical review contributes to the understanding of the potential applications and constraints of electrochemical reduction to manage nitrate in drinking waters and highlights directions for future research required for implementation.",
keywords = "Cathodic reduction, Electrochemical processes, Nanotechnology, Nitrogen cycle, Water treatment",
author = "{GARCIA SEGURA}, Sergio and Mariana Lanzarini-Lopes and Kiril Hristovski and Paul Westerhoff",
year = "2018",
month = "11",
day = "15",
doi = "10.1016/j.apcatb.2018.05.041",
language = "English (US)",
volume = "236",
pages = "546--568",
journal = "Applied Catalysis B: Environmental",
issn = "0926-3373",
publisher = "Elsevier",

}

TY - JOUR

T1 - Electrocatalytic reduction of nitrate

T2 - Fundamentals to full-scale water treatment applications

AU - GARCIA SEGURA, Sergio

AU - Lanzarini-Lopes, Mariana

AU - Hristovski, Kiril

AU - Westerhoff, Paul

PY - 2018/11/15

Y1 - 2018/11/15

N2 - Nitrate contamination in surface and ground waters is one of this century's major engineering challenges due to negative environmental impacts and the risk to human health in drinking water. Electrochemical reduction is a promising water treatment technology to manage nitrate in drinking water. This critical review describes the fundamental principles necessary to understand electrochemical reduction technologies and how to apply them. The focus is on electrochemical nitrate reduction mechanisms and pathways that form undesirable products (nitrite, ammonium) or the more desirable product (dinitrogen). Factors influencing the conversion rates and selectivity of electrochemical nitrate reduction, such as electrode material and operating parameters, are also described. Finally, the applicability for treating drinking water matrices using electrochemical processes is analyzed, including existing implementation of commercial treatment systems. Overall, this critical review contributes to the understanding of the potential applications and constraints of electrochemical reduction to manage nitrate in drinking waters and highlights directions for future research required for implementation.

AB - Nitrate contamination in surface and ground waters is one of this century's major engineering challenges due to negative environmental impacts and the risk to human health in drinking water. Electrochemical reduction is a promising water treatment technology to manage nitrate in drinking water. This critical review describes the fundamental principles necessary to understand electrochemical reduction technologies and how to apply them. The focus is on electrochemical nitrate reduction mechanisms and pathways that form undesirable products (nitrite, ammonium) or the more desirable product (dinitrogen). Factors influencing the conversion rates and selectivity of electrochemical nitrate reduction, such as electrode material and operating parameters, are also described. Finally, the applicability for treating drinking water matrices using electrochemical processes is analyzed, including existing implementation of commercial treatment systems. Overall, this critical review contributes to the understanding of the potential applications and constraints of electrochemical reduction to manage nitrate in drinking waters and highlights directions for future research required for implementation.

KW - Cathodic reduction

KW - Electrochemical processes

KW - Nanotechnology

KW - Nitrogen cycle

KW - Water treatment

UR - http://www.scopus.com/inward/record.url?scp=85047249388&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85047249388&partnerID=8YFLogxK

U2 - 10.1016/j.apcatb.2018.05.041

DO - 10.1016/j.apcatb.2018.05.041

M3 - Review article

VL - 236

SP - 546

EP - 568

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

SN - 0926-3373

ER -