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@article{1495401,
author = {Choi, Yejin and Yoon, HoandIl and Lee, Changha and Vetráková, Ľubica and Heger, Dominik and Kim, Kitae and Kim, Jungwon},
article_location = {WASHINGTON},
article_number = {9},
doi = {http://dx.doi.org/10.1021/acs.est.8b00281},
keywords = {SIMULATED WASTE-WATER; PHOTOACTIVATED PERIODATE; RADIOACTIVE IODIDE; ENHANCED REMOVAL; MECHANISM; OXIDATION; NITRITE; FROZEN; ICE; ACCELERATION},
language = {eng},
issn = {0013-936X},
journal = {ENVIRONMENTAL SCIENCE & TECHNOLOGY},
title = {Activation of Periodate by Freezing for the Degradation of Aqueous Organic Pollutants},
url = {https://pubs.acs.org/doi/10.1021/acs.est.8b00281},
volume = {52},
year = {2018}
}
TY - JOUR
ID - 1495401
AU - Choi, Yejin - Yoon, Ho-Il - Lee, Changha - Vetráková, Ľubica - Heger, Dominik - Kim, Kitae - Kim, Jungwon
PY - 2018
TI - Activation of Periodate by Freezing for the Degradation of Aqueous Organic Pollutants
JF - ENVIRONMENTAL SCIENCE & TECHNOLOGY
VL - 52
IS - 9
SP - 5378-5385
EP - 5378-5385
PB - AMER CHEMICAL SOC
SN - 0013936X
KW - SIMULATED WASTE-WATER
KW - PHOTOACTIVATED PERIODATE
KW - RADIOACTIVE IODIDE
KW - ENHANCED REMOVAL
KW - MECHANISM
KW - OXIDATION
KW - NITRITE
KW - FROZEN
KW - ICE
KW - ACCELERATION
UR - https://pubs.acs.org/doi/10.1021/acs.est.8b00281
L2 - https://pubs.acs.org/doi/10.1021/acs.est.8b00281
N2 - A new strategy (i.e., freezing) for the activation of IO4- for the degradation of aqueous organic pollutants was developed and investigated. Although the degradation of furfuryl alcohol (FFA) by IO4- was negligible in water at 25 degrees C, it proceeded rapidly during freezing at similar to 20 degrees C. The rapid degradation of FFA during freezing should be ascribed to the freeze concentration effect that provides a favorable site (i.e., liquid brine) for the proton-coupled degradation process by concentrating IO4-, FFA, and protons. The maximum absorption wavelength of cresol red (CR) was changed from 434 nm (monoprotonated CR) to 518 nm (diprotonated CR) after freezing, which confirms that the pH of the aqueous IO4- solution decreases by freezing. The degradation experiments with varying experimental parameters demonstrate that the degradation rate increases with increasing IO4- concentration and decreasing pH and freezing temperature. The application of the IO4-/freezing system is not restricted to FFA. The degradation of four other organic pollutants (i.e., tryptophan, phenol, 4-chlorophenol, and bisphenol A) by IO4-, which was negligible in water, proceeded during freezing. In addition, freezing significantly enhanced the IO4--mediated degradation of cimetidine. The outdoor experiments performed on a cold winter night show that the IO4-/freezing system for water treatment can be operated without external electrical energy.
ER -
CHOI, Yejin, Ho-Il YOON, Changha LEE, Ľubica VETRÁKOVÁ, Dominik HEGER, Kitae KIM a Jungwon KIM. Activation of Periodate by Freezing for the Degradation of Aqueous Organic Pollutants. \textit{ENVIRONMENTAL SCIENCE \&{}amp; TECHNOLOGY}. WASHINGTON: AMER CHEMICAL SOC, 2018, roč.~52, č.~9, s.~5378-5385. ISSN~0013-936X. Dostupné z: https://dx.doi.org/10.1021/acs.est.8b00281.
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