Abstract

This study demonstrated a new room-temperature method for synthesizing aluminum (hydr)oxide material inside the pores of strong-base ion-exchange resin to fabricate a novel class of hybrid media capable of simultaneously removing nitrate and fluoride as model groundwater contaminants. The aluminum (hydr)oxide hybrid media was fabricated by reducing aluminum ion precursors with borohydride within ion-exchange resin at room temperature, followed by exposure to environmental oxygen. The hybrid media was characterized, and its performance to simultaneously remove nitrate and fluoride was determined in simple and complex water matrices using short-bed column tests operated under conditions realistic for point-of-use systems. Results revealed that, although not optimized, aluminum (hydr)oxide hybrid media was able to simultaneously remove nitrate and fluoride, which was not possible with neither unmodified strong-base ion-exchange resin nor conventional granular activated alumina alone. Future modifications and optimizations of this relatively simple and inexpensive fabrication process have the potential to yield an entire class of hybrid media suitable for point-of-use/point-of-entry water treatment systems.

Original languageEnglish (US)
Pages (from-to)1848-1855
Number of pages8
JournalScience of the Total Environment
Volume599-600
DOIs
StatePublished - Dec 1 2017

Fingerprint

Ion Exchange Resins
Aluminum Oxide
Fluorides
fluoride
Nitrates
aluminum oxide
Ion exchange resins
ion exchange
Ion exchange
nitrate
Aluminum
Oxides
resin
Activated alumina
Borohydrides
temperature
Water treatment
Temperature
Groundwater
Impurities

Keywords

  • Alumina
  • Fluoride
  • Nanomaterial
  • Nanotechnology
  • Nitrate
  • Water

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

Cite this

@article{f79ba40edec64a638dcff83fd9c598a0,
title = "Nano-enabling of strong-base ion-exchange media via a room-temperature aluminum (hydr)oxide synthesis method to simultaneously remove nitrate and fluoride",
abstract = "This study demonstrated a new room-temperature method for synthesizing aluminum (hydr)oxide material inside the pores of strong-base ion-exchange resin to fabricate a novel class of hybrid media capable of simultaneously removing nitrate and fluoride as model groundwater contaminants. The aluminum (hydr)oxide hybrid media was fabricated by reducing aluminum ion precursors with borohydride within ion-exchange resin at room temperature, followed by exposure to environmental oxygen. The hybrid media was characterized, and its performance to simultaneously remove nitrate and fluoride was determined in simple and complex water matrices using short-bed column tests operated under conditions realistic for point-of-use systems. Results revealed that, although not optimized, aluminum (hydr)oxide hybrid media was able to simultaneously remove nitrate and fluoride, which was not possible with neither unmodified strong-base ion-exchange resin nor conventional granular activated alumina alone. Future modifications and optimizations of this relatively simple and inexpensive fabrication process have the potential to yield an entire class of hybrid media suitable for point-of-use/point-of-entry water treatment systems.",
keywords = "Alumina, Fluoride, Nanomaterial, Nanotechnology, Nitrate, Water",
author = "Jasmina Markovski and Jose Garcia and Kiril Hristovski and Paul Westerhoff",
year = "2017",
month = "12",
day = "1",
doi = "10.1016/j.scitotenv.2017.05.083",
language = "English (US)",
volume = "599-600",
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journal = "Science of the Total Environment",
issn = "0048-9697",
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TY - JOUR

T1 - Nano-enabling of strong-base ion-exchange media via a room-temperature aluminum (hydr)oxide synthesis method to simultaneously remove nitrate and fluoride

AU - Markovski, Jasmina

AU - Garcia, Jose

AU - Hristovski, Kiril

AU - Westerhoff, Paul

PY - 2017/12/1

Y1 - 2017/12/1

N2 - This study demonstrated a new room-temperature method for synthesizing aluminum (hydr)oxide material inside the pores of strong-base ion-exchange resin to fabricate a novel class of hybrid media capable of simultaneously removing nitrate and fluoride as model groundwater contaminants. The aluminum (hydr)oxide hybrid media was fabricated by reducing aluminum ion precursors with borohydride within ion-exchange resin at room temperature, followed by exposure to environmental oxygen. The hybrid media was characterized, and its performance to simultaneously remove nitrate and fluoride was determined in simple and complex water matrices using short-bed column tests operated under conditions realistic for point-of-use systems. Results revealed that, although not optimized, aluminum (hydr)oxide hybrid media was able to simultaneously remove nitrate and fluoride, which was not possible with neither unmodified strong-base ion-exchange resin nor conventional granular activated alumina alone. Future modifications and optimizations of this relatively simple and inexpensive fabrication process have the potential to yield an entire class of hybrid media suitable for point-of-use/point-of-entry water treatment systems.

AB - This study demonstrated a new room-temperature method for synthesizing aluminum (hydr)oxide material inside the pores of strong-base ion-exchange resin to fabricate a novel class of hybrid media capable of simultaneously removing nitrate and fluoride as model groundwater contaminants. The aluminum (hydr)oxide hybrid media was fabricated by reducing aluminum ion precursors with borohydride within ion-exchange resin at room temperature, followed by exposure to environmental oxygen. The hybrid media was characterized, and its performance to simultaneously remove nitrate and fluoride was determined in simple and complex water matrices using short-bed column tests operated under conditions realistic for point-of-use systems. Results revealed that, although not optimized, aluminum (hydr)oxide hybrid media was able to simultaneously remove nitrate and fluoride, which was not possible with neither unmodified strong-base ion-exchange resin nor conventional granular activated alumina alone. Future modifications and optimizations of this relatively simple and inexpensive fabrication process have the potential to yield an entire class of hybrid media suitable for point-of-use/point-of-entry water treatment systems.

KW - Alumina

KW - Fluoride

KW - Nanomaterial

KW - Nanotechnology

KW - Nitrate

KW - Water

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