Studies on adsorption of propiconazole on modified carbons

Simultaneous removal of five triazole fungicides from synthetic solutions on activated carbons and cyclodextrin-based adsorbents

“…In general, the forces include electrostatic, dispersive, and chemical interactions. As has been previously established by our group in another work [52] , pesticide adsorption on AC is produced by dispersive interactions between the π electrons in the aromatic ring of the pollutant and the π electrons in the carbons, by physical adsorption in the carbon network, and by hydrogen bonding. In our study, the untreated carbons were modified by NaOH in order to introduce various oxygen functional groups on the carbon surface.…”

“…The main characteristics are described in Table 2 . For the activation of the raw material, a previous procedure published by our group was used [52] : 5 g of the carbon were heated to boiling for 2 h in 100 mL of a concentrated NaOH solution (1 M), then cooled, filtered, extensively washed with water (NaOH ions in excess in the solution neutralized by HCl), dried under vacuum at 110 °C for 24 h and finally stored in a desiccator until used. The resulting materials were designated M-PAC and M-GAC ( Table 2 ).…”

Variation in sorption of propiconazole with biochars: The effect of temperature, mineral, molecular structure, and nano-porosity

“…PROPI is a hydrophobic systemic triazole fungicide, which is used worldwide for controlling harmful microorganisms, inhibiting fungus attack and preventing foliar or root disease, such as powdery mildew, leaf spot, rust and root rot (Garland et al, 1999). PROPI has been listed as a persistent, potentially toxic compound and possible human carcinogen by the European Union (Adam et al, 2005). Its low mobility and relatively high adsorption in soils rich in OM result in its accumulation in soils and pose a risk for the soil ecosystem (Thorstensen et al, 2001).…”

UV-assisted degradation of propiconazole in a TiO2aqueous suspension: identification of transformation products and the reaction pathway using GC/MS

“…The adsorption of propiconazole in aqueous solution has been studied, using different forms of carbon and about 90% adsorption was achieved at pH 6.5, but the process leads to the transformation of pollutants from one medium to another rather than degradation [14]. Though, degradation of propiconazole in canal water has been reported but without any addition of catalyst and it was concluded that propiconazole does not disperse completely even after 90 days in aqueous systems.…”