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@ARTICLE{Manna:856031,
author = {Manna, Suman and Singh, Neera and Purakayastha, T. J. and
Berns, Anne E.},
title = {{E}ffect of deashing on physico-chemical properties of
wheat and rice straw biochars and potential sorption of
pyrazosulfuron-ethyl},
journal = {Arabian journal of chemistry},
volume = {13},
number = {1},
issn = {1878-5352},
address = {Riyadh},
publisher = {Saudi Chemical Soc.},
reportid = {FZJ-2018-05711},
pages = {1247-1258},
year = {2020},
abstract = {Wheat (WBC) and rice straw biochars (RBC) prepared at 400
and 600 C and their deashed counterparts were characterized
for their physico-chemical properties using CHN analysis,
Brunauer–Emmett–Teller (BET), X-ray fluorescence (XRF),
scanning electron microscopy (SEM), 13C-nuclear magnetic
resonance (NMR), X-ray diffraction (XRD) and Fourier
transform infrared (FT-IR) techniques. Pyrazosulfuron-ethyl
sorption data on normal and deashed biochars could be well
fitted to the Freundlich model. The characteristics of
biochars and their adsorption capacities for
pyrazosulfuron-ethyl were affected by the pyrolysis
temperature and nature of feedstock. Rice biochars had
higher sorption capacities than the wheat biochars. Deashing
of biochars further enhanced their herbicide adsorption
potential by a factor of 2–3. Sorption of herbicide on
both normal and deashed biochars was concentration dependent
(1/n < 1) and decreased with increase in the herbicide
concentration in solution, indicating a saturation of
sorption sites. The nonlinearity of the isotherms increased
with increasing pyrolysis temperature and deashing.
Furthermore, adsorption of pyrazosulfuron-ethyl was affected
by the pH, surface area and pore volume of biochars. Results
of this study suggested that the mineral fraction of
biochars significantly affected pyrazosulfuron-ethyl
sorption.},
cin = {IBG-3},
ddc = {540},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000505076000090},
doi = {10.1016/j.arabjc.2017.10.005},
url = {https://juser.fz-juelich.de/record/856031},
}