PMID- 35351482
OWN - NLM
STAT- MEDLINE
DCOM- 20220524
LR  - 20220524
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 299
DP  - 2022 Jul
TI  - Inactivation of Escherichia coli by dual-functional zerovalent Fe/Al composites 
      in water.
PG  - 134371
LID - S0045-6535(22)00864-5 [pii]
LID - 10.1016/j.chemosphere.2022.134371 [doi]
AB  - A bimetallic Fe/Al disinfection system was developed to examine the feasibility 
      of inactivation of water borne microorganisms. In this study, the effectiveness 
      and mechanisms of the bimetallic Fe/Al system on the inactivation of model 
      bacteria, Escherichia coli (E. coli), were investigated. Results revealed that 
      the Fe/Al system effectively inactivated E. coli to reach nearly 2 logs (99%) 
      removal within 20 min and 4 logs (99.99%) at 24 h, indicating that the Fe/Al 
      composite was able to sustain a long-term disinfection capacity. The inactivation 
      ability resulted from hydroxyl radicals produced by a Fenton reaction through 
      in-situ self-generated Fe(2+) and H(2)O(2) species in the Fe/Al system. In 
      addition to the attack by the radicals, some of E. coli were adsorbed onto the 
      Fe/Al composite (zeta potential of 30-50 mV) as a result of Coulomb interaction. 
      Scanning electron microscope (SEM) images showed that the adsorbed bacteria had 
      damaged pores at the two ends of their rod-like cells. This phenomenon suggested 
      that a micro-electric field between the Fe/Al galvanic couple induced 
      electroporation of the adsorbed E. coli and thus further advanced additional 
      inactivation ability for the bacteria disinfection.
CI  - Copyright (c) 2022 Elsevier Ltd. All rights reserved.
FAU - Yeh, Lizhi
AU  - Yeh L
AD  - Department of Civil and Environmental Engineering, National University of 
      Kaohsiung, 81148, Kaohsiung, Taiwan.
FAU - Yen, Chia-Hsin
AU  - Yen CH
AD  - Institute of Environmental Engineering, National Yang Ming Chiao Tung University, 
      30010, Hsinchu, Taiwan.
FAU - Kao, Yu-Lin
AU  - Kao YL
AD  - Department of Life Science, National University of Kaohsiung, 81148, Kaohsiung, 
      Taiwan.
FAU - Lien, Hsing-Lung
AU  - Lien HL
AD  - Department of Civil and Environmental Engineering, National University of 
      Kaohsiung, 81148, Kaohsiung, Taiwan. Electronic address: lien.sam@nuk.edu.tw.
FAU - Chang, Sue-Min
AU  - Chang SM
AD  - Institute of Environmental Engineering, National Yang Ming Chiao Tung University, 
      30010, Hsinchu, Taiwan.
LA  - eng
PT  - Journal Article
DEP - 20220326
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 059QF0KO0R (Water)
RN  - BBX060AN9V (Hydrogen Peroxide)
SB  - IM
MH  - Disinfection/methods
MH  - *Escherichia coli
MH  - Hydrogen Peroxide/pharmacology
MH  - Oxidation-Reduction
MH  - Water/pharmacology
MH  - *Water Purification/methods
OTO - NOTNLM
OT  - Advanced oxidation processes
OT  - Disinfection
OT  - E. coli
OT  - Electroporation
OT  - Sustainable development goals
OT  - Zero-valent iron
EDAT- 2022/03/31 06:00
MHDA- 2022/05/25 06:00
CRDT- 2022/03/30 05:39
PHST- 2021/09/22 00:00 [received]
PHST- 2022/03/03 00:00 [revised]
PHST- 2022/03/17 00:00 [accepted]
PHST- 2022/03/31 06:00 [pubmed]
PHST- 2022/05/25 06:00 [medline]
PHST- 2022/03/30 05:39 [entrez]
AID - S0045-6535(22)00864-5 [pii]
AID - 10.1016/j.chemosphere.2022.134371 [doi]
PST - ppublish
SO  - Chemosphere. 2022 Jul;299:134371. doi: 10.1016/j.chemosphere.2022.134371. Epub 
      2022 Mar 26.