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作者单位:Yong-Tae Ahn (1) Dong-Wan Cho (1) Akhil N. Kabra (2) Min-Kyu Ji (1) Yeojoon Yoon (1) Jaewon Choi (3) Il-Hwan Choi (3) Joon-Wun Kang (1) Jung Rae Kim (4) Byong-Hun Jeon (2)
1. Department of Environmental Engineering, Yonsei University, Wonju, Gangwon-do, 220-710, Republic of Korea 2. Department of Natural Resources and Environmental Engineering, Hanyang University, Seoul, 133-791, Republic of Korea 3. Water Analysis and Research Center, Korea Institute of Water and Environment, Korea Water Resources Corp., Daejeon, 306-711, Republic of Korea 4. School of Chemical and Biomolecular Engineering, Pusan National University, Busan, 609-735, Republic of Korea
刊物类别:Earth and Environmental Science
刊物主题:Environment Environment Atmospheric Protection, Air Quality Control and Air Pollution Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution Terrestrial Pollution Hydrogeology
出版者:Springer Netherlands
ISSN:1573-2932
文摘
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. Keywords Iopromide Natural organic matter Granular activated carbon Adsorption Ozonation