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@ARTICLE{SuazoHernndez:911251,
author = {Suazo-Hernández, Jonathan and Klumpp, Erwin and
Arancibia-Miranda, Nicolás and Jara, Alejandra and
Poblete-Grant, Patricia and Sepúlveda, Pamela and Bol,
Roland and de la Luz Mora, María},
title = {{C}ombined {E}ffect of {S}oil {P}article {S}ize {F}ractions
and {E}ngineered {N}anoparticles on {P}hosphate {S}orption
{P}rocesses in {V}olcanic {S}oils {E}valuated by {E}lovich
and {L}angmuir–{F}reundlich {M}odels},
journal = {Journal of soil science and plant nutrition},
volume = {22},
number = {3},
issn = {0717-635X},
address = {[Cham]},
publisher = {Springer International Publishing},
reportid = {FZJ-2022-04547},
pages = {3685 - 3696},
year = {2022},
abstract = {Engineered nanoparticles (ENPs) released into the
environment can affect phosphate (Pi) availability in soils.
In this study, we evaluated the effect of silver (Ag) or
copper (Cu) ENPs (3 and $5\%,$ w/w) on Pi sorption processes
in soil particle size fractions. The 2000–32 μm,
32–2 μm, and < 2 μm fractions were obtained from
an agricultural volcanic soil by wet-sieving and
sedimentation methods. The Elovich kinetic and
Langmuir–Freundlich (L-F) isotherm models were used to
describe the adsorption data obtained from batch
experiments. The initial adsorption rate (α) was determined
from the Elovich model to be $105\%$ higher for the
2000–32 μm fraction and $203\%$ higher for the
32–2 μm fraction than for the < 2 μm fraction
(671 mmol kg−1 min−1). Meanwhile, with both doses of
Cu ENPs, the α values are increased for the soil size
fractions, resulting in the formation of adsorption sites
for Pi. However, with Ag ENPs, the α values are both
increased and decreased for the different soil fractions;
therefore, they can block or generate adsorption sites. The
maximum adsorption capacity (qmax) was determined from the
L-F model to be $17\%$ higher for the 32–2 μm fraction
and $47\%$ higher for the < 2 μm fraction compared to
that for the 2000–32 μm fraction (180 mmol kg−1).
With both ENPs, the qmax values are found to be between 1.1
and 1.9 times higher with respect to the 2000–32 μm
fraction without ENPs. In the absence of ENPs, the highest
Pi desorption was found in the 32–2 μm fraction followed
by 2000–32 μm fraction, and finally < 2 μm
fraction. Moreover, the Pi desorption decreased for soil
size fractions with increasing Ag or Cu ENPs content, which
was found to be more pronounced in the 32–2 μm fraction
in the presence of Cu ENPs. The presence of Ag and Cu ENPs
increases Pi retention in soil size fractions, which can
decrease soil fertility. Thus, future studies are
recommended to find out the critical amounts of ENPs, which
may favor Pi retention without any negative effects on
agricultural soils.},
cin = {IBG-3},
ddc = {570},
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},
UT = {WOS:000835156800003},
doi = {10.1007/s42729-022-00919-4},
url = {https://juser.fz-juelich.de/record/911251},
}