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@ARTICLE{Schwahn:825196,
author = {Schwahn, Dietmar and Feilbach, Herbert and Starc, Thomas
and Pipich, Vitaliy and Kasher, Roni and Oren, Yoram},
title = {{D}esign and test of a reverse osmosis pressure cell for
in-situ small-angle neutron scattering studies},
journal = {Desalination},
volume = {405},
issn = {0011-9164},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2016-07667},
pages = {40 - 50},
year = {2017},
abstract = {We introduce a new method for real-time studies of membrane
scaling and biofouling on thin film composite membranes
(TFC) in reverse osmosis and nanofiltration water treatment
using in-situ small-angle neutron scattering (SANS). SANS
delivers information on nano and microscopic structures that
support the interpretation of relevant engineering
parameters such as membrane permeability and water flux. A
flow cell high pressure SANS is described, followed by SANS
characterization of TFC membranes finding ~ 0.5 μm large
cavities and ~ 300 Å diameter large rod-like cavities
inside the non-woven polyester and micro-porous polysulfone
layer, respectively. In-situ desalination experiments in
cross-flow mode at an applied pressure of 6 bars and feed
flow velocity of 0.2 cm/s are followed. The scattering
cross-section times sample thickness (μt = Σt × DS)
derived from the transmission coefficient shows an overall
enhancement due to newly formed scattering centers which is
accompanied by a reduced membrane permeability measured
simultaneously. This observation is supported by enhanced
scattering of the membrane due to μm large domains of mass
fractal structure. The addition of the protein BSA to the
feed after desalination of 30 h effectuates strong
enhancement of the permeability accompanied by a about a
$50\%$ decline of μm large scattering centers.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
ddc = {570},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {6215 - Soft Matter, Health and Life Sciences (POF3-621) /
6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G15 /
G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)KWS3-20140101 / EXP:(DE-MLZ)KWS2-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000392683900004},
doi = {10.1016/j.desal.2016.11.026},
url = {https://juser.fz-juelich.de/record/825196},
}