Removal of Iopromide and Its Intermediates from Ozone-Treated Water Using Granular Activated Carbon

Yong Tae Ahn, Dong Wan Cho, Akhil N. Kabra, Min Kyu Ji, Yeojoon Yoon, Jaewon Choi, Il Hwan Choi, Joon Wun Kang, Jung Rae Kim, Byong Hun Jeon

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The potential of granular activated carbon (GAC) to remove iopromide and its intermediates from ozone-treated river water was evaluated. Mass spectrum analysis showed that ozone treatment lead to partial removal of iopromide (m/z 791.8) with generation of various intermediates. GAC demonstrated a lower iopromide adsorption (1.60 μg/g) in the presence of natural organic matter (NOM) compared to NOM-free water (12.54 μg/g), indicating the inhibitory effect of NOM on iopromide adsorption. Ozone treatment of the influent reduced the inhibitory effect of NOM by altering its composition and inducing polarity shift. GAC post-treatment resulted in improved removal of residual iopromide and its intermediates from the ozone-treated influent. Application of such combined treatment of ozonation followed by GAC adsorption can be an effective strategy for the removal of iopromide and its intermediates from contaminated water streams.

Original languageEnglish
Article number346
JournalWater, Air, and Soil Pollution
Volume226
Issue number10
DOIs
Publication statusPublished - 2015 Oct 29

Fingerprint

iopromide
Ozone
Activated carbon
Biological materials
activated carbon
ozone
organic matter
Water
adsorption
Adsorption
water
Ozonization
Spectrum analysis
river water
Rivers
removal
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modelling
  • Water Science and Technology
  • Pollution

Cite this

Ahn, Yong Tae ; Cho, Dong Wan ; Kabra, Akhil N. ; Ji, Min Kyu ; Yoon, Yeojoon ; Choi, Jaewon ; Choi, Il Hwan ; Kang, Joon Wun ; Kim, Jung Rae ; Jeon, Byong Hun. / Removal of Iopromide and Its Intermediates from Ozone-Treated Water Using Granular Activated Carbon. In: Water, Air, and Soil Pollution. 2015 ; Vol. 226, No. 10.
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Removal of Iopromide and Its Intermediates from Ozone-Treated Water Using Granular Activated Carbon. / Ahn, Yong Tae; Cho, Dong Wan; Kabra, Akhil N.; Ji, Min Kyu; Yoon, Yeojoon; Choi, Jaewon; Choi, Il Hwan; Kang, Joon Wun; Kim, Jung Rae; Jeon, Byong Hun.

In: Water, Air, and Soil Pollution, Vol. 226, No. 10, 346, 29.10.2015.

Research output: Contribution to journalArticle

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AU - Ji, Min Kyu

AU - Yoon, Yeojoon

AU - Choi, Jaewon

AU - Choi, Il Hwan

AU - Kang, Joon Wun

AU - Kim, Jung Rae

AU - Jeon, Byong Hun

PY - 2015/10/29

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N2 - The potential of granular activated carbon (GAC) to remove iopromide and its intermediates from ozone-treated river water was evaluated. Mass spectrum analysis showed that ozone treatment lead to partial removal of iopromide (m/z 791.8) with generation of various intermediates. GAC demonstrated a lower iopromide adsorption (1.60 μg/g) in the presence of natural organic matter (NOM) compared to NOM-free water (12.54 μg/g), indicating the inhibitory effect of NOM on iopromide adsorption. Ozone treatment of the influent reduced the inhibitory effect of NOM by altering its composition and inducing polarity shift. GAC post-treatment resulted in improved removal of residual iopromide and its intermediates from the ozone-treated influent. Application of such combined treatment of ozonation followed by GAC adsorption can be an effective strategy for the removal of iopromide and its intermediates from contaminated water streams.

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