PMID- 33862480
OWN - NLM
STAT- MEDLINE
DCOM- 20210719
LR  - 20221207
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 416
DP  - 2021 Aug 15
TI  - Degradation synergism between sonolysis and photocatalysis for organic pollutants 
      with different hydrophobicity: A perspective of mechanism and application for 
      high mineralization efficiency.
PG  - 125787
LID - S0304-3894(21)00751-2 [pii]
LID - 10.1016/j.jhazmat.2021.125787 [doi]
AB  - Despite extensive studies, the fundamental understanding of synergistic 
      mechanisms between sonolysis and photocatalysis for the abatement of persistent 
      organic pollutants (POPs) remains uncertain. As different phases formed under 
      ultrasound irradiation, hydrophilic POPs, sulfamethoxazole (SMX, K(ow): 0.89), 
      predominantly resides in bulk liquid and is ineffectively degraded by sonolysis 
      (k(US) = 3.33 x 10(-3) min(-1)) since <10% of hydroxyl radicals (.OH) formed at 
      the gas-liquid interface of cavitation is diffused into the bulk, whereas the 
      other fraction rapidly recombines into hydrogen peroxide (H(2)O(2)). This study 
      provides a proof-of-concept for the mechanism by presenting various analytical 
      results, endorsing the synergistic role of photoexcited electrons in splitting 
      sonolysis-induced H(2)O(2) into .OH, particularly in the bulk phase. In a 
      sonophotocatalytic system, the hydrophobic POPs such as bisphenol A (BPA) and 
      atrazine (ATZ) were mainly degraded in gas-liquid interface indicated by the low 
      synergistic values correlation compared to SMX [i.e., SMX has a higher 
      synergistic factor, f(syn) (3.26) than BPA (1.30) and ATZ (1.35)]. Also, f(syn) 
      was found linearly correlated with the contribution factor of photocatalysis to 
      split H(2)O(2). Three times of consecutive kinetics using an effluent of 
      municipal (MP) wastewater spiked by POPs presented >98% POPs and >96% total 
      organic carbon (TOC) removal.
CI  - Copyright (c) 2021 Elsevier B.V. All rights reserved.
FAU - Ryu, Baekha
AU  - Ryu B
AD  - Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, 
      Nowon-Gu, Seoul 01897, Republic of Korea.
FAU - Wong, Kien Tiek
AU  - Wong KT
AD  - Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, 
      Nowon-Gu, Seoul 01897, Republic of Korea. Electronic address: kientiek@kw.ac.kr.
FAU - Choong, Choe Earn
AU  - Choong CE
AD  - Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, 
      Nowon-Gu, Seoul 01897, Republic of Korea.
FAU - Kim, Jung-Rae
AU  - Kim JR
AD  - School of Chemical and Biomolecular Engineering, Pusan National University, Busan 
      46241, Republic of Korea.
FAU - Kim, Hyunook
AU  - Kim H
AD  - Department of Environmental Engineering, University of Seoul, Seoul 02504, 
      Republic of Korea.
FAU - Kim, Sang-Hyoun
AU  - Kim SH
AD  - Department of Civil and Environmental Engineering, Yonsei University, Seoul 
      03722, Republic of Korea.
FAU - Jeon, Byong-Hun
AU  - Jeon BH
AD  - Department of Earth Resources and Environmental Engineering, Hanyang University, 
      Seoul 04763, Republic of Korea.
FAU - Yoon, Yeomin
AU  - Yoon Y
AD  - Department of Civil and Environmental Engineering, University of South Carolina, 
      300 Main Street, Columbia, SC 29208, USA.
FAU - Snyder, Shane A
AU  - Snyder SA
AD  - Chemical and Environmental Engineering, University of Arizona, Tucson, AZ 85721, 
      USA; Nanyang Environment & Water Research Institute (NEWRI), Nanyang 
      Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141, 
      Singapore.
FAU - Jang, Min
AU  - Jang M
AD  - Department of Environmental Engineering, Kwangwoon University, 20 Kwangwoon-Ro, 
      Nowon-Gu, Seoul 01897, Republic of Korea. Electronic address: minjang@kw.ac.kr.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20210402
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Environmental Pollutants)
RN  - 0 (Waste Water)
RN  - 0 (Water Pollutants, Chemical)
RN  - BBX060AN9V (Hydrogen Peroxide)
RN  - JE42381TNV (Sulfamethoxazole)
SB  - IM
MH  - *Environmental Pollutants
MH  - Hydrogen Peroxide
MH  - Hydrophobic and Hydrophilic Interactions
MH  - Oxidation-Reduction
MH  - Sulfamethoxazole
MH  - Wastewater
MH  - *Water Pollutants, Chemical/analysis
OTO - NOTNLM
OT  - Electrons
OT  - Hydrogen peroxide
OT  - Photocatalysis
OT  - Sonolysis
OT  - Synergistic
EDAT- 2021/04/17 06:00
MHDA- 2021/07/20 06:00
CRDT- 2021/04/16 20:24
PHST- 2021/01/13 00:00 [received]
PHST- 2021/03/23 00:00 [revised]
PHST- 2021/03/27 00:00 [accepted]
PHST- 2021/04/17 06:00 [pubmed]
PHST- 2021/07/20 06:00 [medline]
PHST- 2021/04/16 20:24 [entrez]
AID - S0304-3894(21)00751-2 [pii]
AID - 10.1016/j.jhazmat.2021.125787 [doi]
PST - ppublish
SO  - J Hazard Mater. 2021 Aug 15;416:125787. doi: 10.1016/j.jhazmat.2021.125787. Epub 
      2021 Apr 2.