PMID- 31394452
OWN - NLM
STAT- MEDLINE
DCOM- 20191210
LR  - 20191217
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 237
DP  - 2019 Dec
TI  - Regeneration of porous electrospun membranes embedding alumina nanoparticles 
      saturated with minocycline by UV radiation.
PG  - 124495
LID - S0045-6535(19)31719-9 [pii]
LID - 10.1016/j.chemosphere.2019.124495 [doi]
AB  - A regeneration method for porous electrospun membranes embedding alumina 
      nanoparticles saturated with minocycline was investigated by UV-LED system. The 
      percentage of adsorption capacities before and after regeneration were used to 
      evaluate regeneration efficiency. The PVDF and PVDF-Al(2)O(3) fiber mats were 
      prepared by electrospinning technique. Scanning electron microscope (SEM), 
      transmission electron microscope (TEM), energy-dispersive X-ray spectroscopy 
      (EDS) analyses directly confirmed that Al(2)O(3) nanoparticles were generally 
      exposed to the surface of PVDF-Al(2)O(3) fiber mats. Among them, PVDF-Al(2)O(3) 
      10% fiber mats can effectively adsorb minocycline (remove efficiency >97% in 
      18 h) with  fi rst-order rate constant k = 2.253 +/- 0.331 h(-1). The sorption 
      capacity can still keep 81% after five sorption/UV-regeneration circulations. Two 
      successional stages may exist during regeneration: (i) transfer of minocycline 
      from the surface of PVDF-Al(2)O(3) fibers to the DI water, followed by the (ii) 
      decomposition of this compound in aqueous solution by direct and indirect 
      photolysis to yield the intermediate species. The desorption capacity and 
      desorption percentage were 4.39 mg g(-1) and 23.30% respectively. The 
      regeneration yields were further enhanced to 94.20% by UV radiation. Minocycline 
      was effectively degraded to intermediate products by direct and indirect 
      photolysis, further degraded into CO(2), H(2)O, and NO(x) by UV-generated ozone 
      during regeneration. The results indicated that UV radiation was an effective 
      method of regenerating PVDF-Al(2)O(3) fiber mats with low energy requirements. 
      The photochemical byproducts and the reaction sites during regeneration were also 
      determined and recognized.
CI  - Copyright (c) 2019 Elsevier Ltd. All rights reserved.
FAU - Wu, Yuandong
AU  - Wu Y
AD  - Research Center for Eco-Environmental Engineering, Dongguan University of 
      Technology, Dongguan, 523808, China.
FAU - Sun, Yanlong
AU  - Sun Y
AD  - Research Center for Eco-Environmental Engineering, Dongguan University of 
      Technology, Dongguan, 523808, China.
FAU - Zhou, Chengzhi
AU  - Zhou C
AD  - Research Center for Eco-Environmental Engineering, Dongguan University of 
      Technology, Dongguan, 523808, China.
FAU - Niu, Junfeng
AU  - Niu J
AD  - Research Center for Eco-Environmental Engineering, Dongguan University of 
      Technology, Dongguan, 523808, China. Electronic address: niujf@dgut.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20190730
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Water Pollutants, Chemical)
RN  - 059QF0KO0R (Water)
RN  - FYY3R43WGO (Minocycline)
RN  - LMI26O6933 (Aluminum Oxide)
SB  - IM
MH  - Adsorption
MH  - Aluminum Oxide/*chemistry
MH  - Membranes
MH  - Minocycline/*chemistry
MH  - Nanoparticles/*chemistry
MH  - Photolysis
MH  - Porosity
MH  - Ultraviolet Rays
MH  - Water/chemistry
MH  - Water Pollutants, Chemical/analysis
OTO - NOTNLM
OT  - Al(2)O(3)
OT  - Electrospun membranes
OT  - Minocycline
OT  - Regeneration
OT  - Ultraviolet
EDAT- 2019/08/09 06:00
MHDA- 2019/12/18 06:00
CRDT- 2019/08/09 06:00
PHST- 2019/06/13 00:00 [received]
PHST- 2019/07/26 00:00 [revised]
PHST- 2019/07/29 00:00 [accepted]
PHST- 2019/08/09 06:00 [pubmed]
PHST- 2019/12/18 06:00 [medline]
PHST- 2019/08/09 06:00 [entrez]
AID - S0045-6535(19)31719-9 [pii]
AID - 10.1016/j.chemosphere.2019.124495 [doi]
PST - ppublish
SO  - Chemosphere. 2019 Dec;237:124495. doi: 10.1016/j.chemosphere.2019.124495. Epub 
      2019 Jul 30.