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@ARTICLE{Khalaf:902940,
author = {Khalaf, Bayan and Hamed, Othman and Jodeh, Shehdeh and
Hanbali, Ghadir and Bol, Roland and Dagdag, Omar and Samhan,
Subhi},
title = {{N}ovel, {E}nvironment-{F}riendly {C}ellulose-{B}ased
{D}erivatives for {T}etraconazole {R}emoval from {A}queous
{S}olution},
journal = {Polymers},
volume = {13},
number = {3},
issn = {2073-4360},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2021-04693},
pages = {450 -},
year = {2021},
abstract = {In this study, cellulose-based derivatives with
heterocyclic moieties were synthesized by reacting cellulose
with furan-2-carbonyl chloride (Cell-F) and
pyridine-2,6-dicarbonyl dichloride (Cell-P). The derivatives
were evaluated as adsorbents for the pesticide tetraconazole
from aqueous solution. The prepared adsorbents were
characterized by SEM, TGA, IR, and H1 NMR instruments. To
maximize the adsorption efficiency of tetraconazole, the
optimum conditions of contact time, pH, temperature,
adsorbent dose, and initial concentration of adsorbate were
determined. The highest removal percentage of tetraconazole
from water was $98.51\%$ and $95\%$ using Cell-F and Cell-P,
respectively. Underivatized nanocellulose was also evaluated
as an adsorbent for tetraconazole for comparison purpose,
and it showed a removal efficiency of about $91.73\%.$ The
best equilibrium adsorption isotherm model of each process
was investigated based on the experimental and calculated R2
values of Freundlich and Langmuir models. The adsorption
kinetics were also investigated using pseudo-first-order,
pseudo-second-order, and intra-particle-diffusion adsorption
kinetic models. The Van’t Hoff plot was also studied for
each adsorption to determine the changes in adsorption
enthalpy (∆H), Gibbs free energy (∆G), and entropy
(∆S). The obtained results showed that adsorption by
Cell-F and Cell-P follow the Langmuir adsorption isotherm
and the mechanism follows the pseudo-second-order kinetic
adsorption model. The obtained negative values of the
thermodynamic parameter ∆G (−4.693, −4.792, −5.549
kJ) for nanocellulose, Cell-F, and Cell-P, respectively,
indicate a spontaneous adsorption process. Cell-F and Cell-P
could be promising absorbents on a commercial scale for
tetraconazole and other pesticides},
cin = {IBG-3},
ddc = {540},
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 = {33573294},
UT = {WOS:000615429900001},
doi = {10.3390/polym13030450},
url = {https://juser.fz-juelich.de/record/902940},
}