@conference{
author = "Perendija, Jovana and Marinković, Aleksandar and Popović, Mina and Milošević, Dragana and Ljubić, Verica and Milošević, Milena and Vasiljević, Ljubica",
year = "2021",
abstract = "Aquatic pollution caused by pesticides as a consequence through run-off, leaching, and subsurface drainage, may pose a serious health hazard for living being and ecosystems due to
pesticides persistent nature and bio-magnification. Since most organic pesticides are nondegradable and carcinogenic, they represent a potent category of water contaminants. The aim
of the presented work was to develope functional biodegradable membranes which could be used
as an efficient adsorbent for the removal of pesticides (difenoconazole and thiophanate-methyl)
from aquatic solutions. The bio-renewable membranes (Cell-El and Cell-El-Ta) based on epoxyamino reactivity of the Cellulose fibres (Cell) modified with diethylenetriamine (Cell‒Deta), (3-
Glycidyloxypropyl)trimethoxysilane (Cell-Glymo), Lignin modified with epichlorohydrine (El)
and Tannic acid (Ta), as an additional crosslinker, were produced by optimized methods through
the application of novel approaches. The membrane preparation was conducted at the
appropriate molar ratio of functional groups designed to provide numbers of residual
functionalities effective for pesticide removal. The membranes were characterized by FourierTransform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). FTIR
spectral analysis was used to identify the characteristic functional groups of produced
membranes and spectral pattern change as a result of the formation of coordination complexes
of pesticides with surface functionalities. Controlled modification of Cell fibre and subsequent
production of Cell-El and Cell-El-Ta membrane causes change fibres surface and material
morphology, and SEM analysis proved successful modification and membrane production with
formation a large number of fibres interconnections. The effects of contact time, temperature,
and initial concentration of pesticides on adsorption were studied in a batch system. The
Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich (D-R) isotherm models were used to
evaluate the adsorption process, and to predict the adsorption capacity of the adsorbents. The
experimental results were best fitted with the Langmuir isotherm model. The calculated
capacities: 32.2, 69.3, 45.1 and 83.2 mg g-1 for difenoconazole and thiophanate-methyl using
Cell-El and Cell-El-Ta, respectively, were obtained from Langmuir model fitting at 25oC. The
thermodynamic parameters indicated spontaneous and low endothermic processes. The present
study demonstrates that prepared membranes could be an effective and low-cost adsorbent to
prevent contamination of water and consequently help minimize the environmental impact
caused by the pesticides.",
publisher = "Zvornik : Faculty of Technology",
journal = "Book of Abstracts - VII International Congress Engineering, Environment and Materials in Process Industry, 17th-19th March 2021, Jahorina - Republic of Srpska, Bosnia and Herzegovina",
title = "Bio-renewable membranes based on modified cellulose, lignin, and tannic acid for difenoconazole and thiophanate-methyl removal",
pages = "69-69",
url = "https://hdl.handle.net/21.15107/rcub_cer_6469"
}
