% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Rathinam:868047,
author = {Rathinam, Karthik and Abraham, Shiju and Oren, Yoram and
Schwahn, Dietmar and Petry, Winfried and Kaufman, Yair and
Kasher, Roni},
title = {{S}urface-{I}nduced {S}ilica {S}caling during {B}rackish
{W}ater {D}esalination: {T}he {R}ole of {S}urface {C}harge
and {S}pecific {C}hemical {G}roups},
journal = {Environmental science $\&$ technology},
volume = {53},
number = {9},
issn = {1520-5851},
address = {Columbus, Ohio},
publisher = {American Chemical Society},
reportid = {FZJ-2019-06640},
pages = {5202 - 5211},
year = {2019},
abstract = {Silica scaling of membranes used in reverse osmosis
desalination processes is a severe problem, especially
during the desalination of brackish groundwater due to high
silica concentrations. This problem limits the water supply
in inland arid and semiarid regions. Here, we investigated
the influence of surface-exposed organic functional groups
on silica precipitation and scaling. A test solution
simulating the mineral content of brackish groundwater
desalination brine at $75\%$ recovery was used. The mass and
chemical composition of the precipitated silica was
monitored using a quartz crystal microbalance, X-ray
photoelectron spectroscopy, and infrared spectroscopy,
showing that surfaces with positively charged groups induced
rapid silica precipitation, and the rate of silica
precipitation followed the order −NH2 ∼ −N+(CH3)3 >
−NH2/–COOH > −H2PO3 ∼ −OH > −COOH > −CH3.
Force vs distance AFM measurements showed that the adhesion
energy between a silica colloid glued to AFM cantilever and
the studied surfaces increased as the surface charge changed
from negative to positive. Thus, for the first time direct
measurements of molecular forces and specific chemical
groups that govern silica scaling during brackish water
desalination is reported here. The influence of the
different functional groups and the effect of the surface
charge on silica precipitation that were found here can be
used to design membranes that resist silica scaling in
membrane-based desalination processes.},
cin = {JCNS-1},
ddc = {333.7},
cid = {I:(DE-Juel1)JCNS-1-20110106},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS)
(POF3-623)},
pid = {G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)KWS3-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {30955329},
UT = {WOS:000467641800058},
doi = {10.1021/acs.est.8b06154},
url = {https://juser.fz-juelich.de/record/868047},
}