Examination of the influence of phenyltrimethylammonium chloride (PTMA) concentration on acetochlor adsorption by modified montmorillonite
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2018
Authors
Kaluđerović, Lazar M.Tomić, Zorica P.
Asanin, Darko P.
Durovic-Pejcev, Rada D.
Kresović, Branka
Article (Published version)
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Show full item recordAbstract
The results presented in this paper show an impact of the concentration of the aromatic organic cation on the adsorption of acetochlor on the surface of the organic-modified montmorillonite. Natural montmorillonite from Bogovina (Boljevac municipality, Serbia) was used for organic modification in this experiment. Cation exchange capacity of this montmorillonite (86mmol 100g(-1) of clay) was determined using the methylene blue method. In pretreatment, montmorillonite was modified with NaCl. For the purpose of organic modification, three different concentrations of phenyltrimethylammonium chloride (PTMA) have been selected, based on calculated CEC value: 43mmol 100g(-1) of clay (0.5 CEC), 86mmol 100g(-1) of clay (1 CEC) and 129mmol 100g(-1) of clay (1.5 CEC). The changes in the properties of the inorganic and organic modified montmorillonite were examined using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and batch equilibrium method. Freundlich coefficients sh...ow higher uptake of the herbicide by montmorillonite modified with PTMA, compared to inorganic-modified montmorillonite. The results also indicate the influence of the organic cation concentration on the adsorption of the selected herbicide.
Keywords:
Montmorillonite / phenyltrimethylammonium chloride / batch equilibrium method / adsorption / infrared spectroscopy / X-ray diffractionSource:
Journal of Environmental Science and Health Part B-Pesticides Food Contaminants and Agricultural Was, 2018, 53, 8, 503-509Publisher:
- Taylor & Francis Inc, Philadelphia
Funding / projects:
- Minerals of Serbia: composition, genesis, application and contribution to the environmental sustainability (RS-MESTD-Basic Research (BR or ON)-176010)
- Studies on plant pathogens, arthropods, weeds, and pesticides with a view to developing the methods of biorational plant protection and safe food production (RS-MESTD-Technological Development (TD or TR)-31043)
DOI: 10.1080/03601234.2018.1462930
ISSN: 0360-1234
PubMed: 29708850