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@ARTICLE{Yun:1006864,
author = {Yun, Jinhu and Liang, Yan and Muhammad, Yaseen and Liu, Fei
and Dong, Yawen and Wang, Shuangfei},
title = {{I}nfluence of biochar incorporation on the collector
surface properties and the transport of silver nanoparticles
in porous media},
journal = {Journal of environmental management},
volume = {328},
issn = {0301-4797},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2023-01906},
pages = {116943},
year = {2023},
abstract = {Biochar is widely used as a soil amendment due to its
environmental friendliness and convenient availability. It
is believed that the presence of biochar in porous media can
influence the transport of colloidal and solute
contaminants. In this study, different mass ratios of
biochar were added to packed sand with a rough or smooth
surface to determine the significance of biochar on the
retention and release of silver nanoparticles (AgNPs). The
results showed that biochar reduced the transport of AgNPs
in rough and smooth sands under different solution
conditions. A small amount of biochar $(0.1–1\%$ in mass
percentage) can significantly enhance the retention of AgNPs
due to the alteration in collector surface roughness and
chemical heterogeneity that potentially reduce the energy
barrier for retention. Furthermore, the retention of AgNPs
in rough sand was always higher than that in smooth sand
under the same experimental conditions. The presence of
biochar also produced nonmonotonic retention of AgNPs mainly
due to the changes in collector surface roughness.
Additionally, the AgNPs retention associated with biochar
tended to be irreversible due to the charge heterogeneity,
while the reversible retention could mainly occur on a rough
sand surface via shallow primary minima. This work
highlights the significance of collector surface roughness
that needs to be considered in the process of biochar
amendment for practical applications to effectively
immobilize colloidal contaminants in soil or groundwater.},
cin = {IBG-3},
ddc = {690},
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 = {36516715},
UT = {WOS:000900338700002},
doi = {10.1016/j.jenvman.2022.116943},
url = {https://juser.fz-juelich.de/record/1006864},
}