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@ARTICLE{Zhang:904449,
author = {Zhang, Miaoyue and Bradford, Scott A. and Klumpp, Erwin and
Šimůnek, Jirka and Jin, Chao and Qiu, Rongliang},
title = {{N}on-monotonic contribution of nonionic surfactant on the
retention of functionalized multi-walled carbon nanotubes in
porous media},
journal = {Journal of hazardous materials},
volume = {407},
issn = {0304-3894},
address = {New York, NY [u.a.]},
publisher = {Science Direct},
reportid = {FZJ-2021-06019},
pages = {124874 -},
year = {2021},
note = {Ein Postprint steht leider nicht zur Verfügung},
abstract = {The concentration of nonionic surfactants like Triton X-100
(TX100) can influence the transport and fate of emerging
contaminants (e.g., carbon nanotubes) in porous media, but
limited research has previously addressed this issue. This
study investigates the co-transport of functionalized
multi-walled carbon nanotubes (MWCNTs) and various
concentrations of TX100 in saturated quartz sand (QS). Batch
experiments and molecular dynamics simulations were
conducted to investigate the interactions between TX100 and
MWCNTs. Results indicated that the concentration ratio of
MWCNTs and TX100 strongly influences the dispersion of
MWCNTs and interaction forces between MWCNTs and QS during
the transport. Breakthrough curves of MWCNTs and TX100 and
retention profiles of MWCNTs were determined and simulated
in column studies. MWCNTs strongly enhanced the retention of
TX100 in QS due to the high affinity of TX100 for MWCNTs.
Conversely, the concentration of TX100 had a non-monotonic
impact on MWCNT retention. The maximum transport of MWCNTs
in the QS occurred at an input concentration of TX100 that
was lower than the critical micelle concentration. This
suggests that the relative importance of factors influencing
MWCNTs changed with TX100 sorption. Results from interaction
energy calculations and modeling of competitive blocking
indicate that the predictive ability of interaction energy
calculations and colloid filtration theory may be lost
because TX100 mainly altered intermolecular forces between
the MWCNT and porous media. This study provides new insights
into the co-transport of surfactants and MWCNTs in porous
media, which can be useful for environmental applications
and risk management.},
cin = {IBG-3},
ddc = {530},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217)},
pid = {G:(DE-HGF)POF4-2173},
typ = {PUB:(DE-HGF)16},
pubmed = {33373966},
UT = {WOS:000613431300005},
doi = {10.1016/j.jhazmat.2020.124874},
url = {https://juser.fz-juelich.de/record/904449},
}