Detailed Information on Publication Record
2018
Activation of Periodate by Freezing for the Degradation of Aqueous Organic Pollutants
CHOI, Yejin, Ho-Il YOON, Changha LEE, Ľubica VETRÁKOVÁ, Dominik HEGER et. al.Basic information
Original name
Activation of Periodate by Freezing for the Degradation of Aqueous Organic Pollutants
Authors
CHOI, Yejin (410 Republic of Korea), Ho-Il YOON (410 Republic of Korea), Changha LEE (410 Republic of Korea), Ľubica VETRÁKOVÁ (703 Slovakia, belonging to the institution), Dominik HEGER (203 Czech Republic, guarantor, belonging to the institution), Kitae KIM (410 Republic of Korea) and Jungwon KIM (410 Republic of Korea)
Edition
ENVIRONMENTAL SCIENCE & TECHNOLOGY, WASHINGTON, AMER CHEMICAL SOC, 2018, 0013-936X
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10511 Environmental sciences
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 7.149
RIV identification code
RIV/00216224:14310/18:00106131
Organization unit
Faculty of Science
UT WoS
000431466500037
Keywords in English
SIMULATED WASTE-WATER; PHOTOACTIVATED PERIODATE; RADIOACTIVE IODIDE; ENHANCED REMOVAL; MECHANISM; OXIDATION; NITRITE; FROZEN; ICE; ACCELERATION
Tags
International impact, Reviewed
Změněno: 9/2/2019 11:50, Mgr. Michaela Hylsová, Ph.D.
Abstract
V originále
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.