Adsorption of some weak organic electrolytes from aqueous solutions on silica
Апстракт
The adsorption of organic electrolytes from aqueous solutions on various adsorbents has been frequently investigated because of its importance in water purification. Phenol and substituted phenols are very common contaminants of water. In this paper, the adsorption results of some weak organic electrolytes (hydrochinon, phloroglucin and acidum gallicum) from aqueous solutions on silica are presented. The adsorption of the organics was investigated by the batch method. Effects of solution pHs (in the 2-10 range) and concentrations of these compounds on the adsorption were investigated. In the case of acidum gallicum, adsorption isotherms (in the 2-6 pH range) were determined. The obtained results indicate that the amount of adsorbed acidum gallicum increases with its increasing concentration. The maximum adsorption was recorded at pH=2-3 (pH equal to pH(pzc) of SiO2) with acidum gallicum molecule being undissociated (pK(a)= 4.41). The experimental data were fitted with different adsorpt...ion isotherms models. The maximum amount of acidum gallicum adsorbed as well as the Freundlich constants of adsorption were calculated. The adsorption of hydrochinon and phloroglucin from aqueous solutions (in the investigated pH range) on silica was negligible.
Кључне речи:
acidum gallium / Adsorption / hydrochinon / phloroglucin / silicaИзвор:
Materials Science Forum, 2007, 555, 195-+Напомена:
- Research Trends in Contemporary Materials Science, 8th Conference of the Yugoslav-Materials-Research-Society (Yu-MRS), Sep 04-08, 2006, Herceg Novi, Montenegro
Колекције
Институција/група
VinčaTY - CONF AU - Milonjić, Slobodan K. AU - Zhigunova, L. K. AU - Pavasovic, V. Lj. PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6684 AB - The adsorption of organic electrolytes from aqueous solutions on various adsorbents has been frequently investigated because of its importance in water purification. Phenol and substituted phenols are very common contaminants of water. In this paper, the adsorption results of some weak organic electrolytes (hydrochinon, phloroglucin and acidum gallicum) from aqueous solutions on silica are presented. The adsorption of the organics was investigated by the batch method. Effects of solution pHs (in the 2-10 range) and concentrations of these compounds on the adsorption were investigated. In the case of acidum gallicum, adsorption isotherms (in the 2-6 pH range) were determined. The obtained results indicate that the amount of adsorbed acidum gallicum increases with its increasing concentration. The maximum adsorption was recorded at pH=2-3 (pH equal to pH(pzc) of SiO2) with acidum gallicum molecule being undissociated (pK(a)= 4.41). The experimental data were fitted with different adsorption isotherms models. The maximum amount of acidum gallicum adsorbed as well as the Freundlich constants of adsorption were calculated. The adsorption of hydrochinon and phloroglucin from aqueous solutions (in the investigated pH range) on silica was negligible. C3 - Materials Science Forum T1 - Adsorption of some weak organic electrolytes from aqueous solutions on silica VL - 555 SP - 195 EP - + DO - 10.4028/www.scientific.net/MSF.555.195 ER -
@conference{ author = "Milonjić, Slobodan K. and Zhigunova, L. K. and Pavasovic, V. Lj.", year = "2007", abstract = "The adsorption of organic electrolytes from aqueous solutions on various adsorbents has been frequently investigated because of its importance in water purification. Phenol and substituted phenols are very common contaminants of water. In this paper, the adsorption results of some weak organic electrolytes (hydrochinon, phloroglucin and acidum gallicum) from aqueous solutions on silica are presented. The adsorption of the organics was investigated by the batch method. Effects of solution pHs (in the 2-10 range) and concentrations of these compounds on the adsorption were investigated. In the case of acidum gallicum, adsorption isotherms (in the 2-6 pH range) were determined. The obtained results indicate that the amount of adsorbed acidum gallicum increases with its increasing concentration. The maximum adsorption was recorded at pH=2-3 (pH equal to pH(pzc) of SiO2) with acidum gallicum molecule being undissociated (pK(a)= 4.41). The experimental data were fitted with different adsorption isotherms models. The maximum amount of acidum gallicum adsorbed as well as the Freundlich constants of adsorption were calculated. The adsorption of hydrochinon and phloroglucin from aqueous solutions (in the investigated pH range) on silica was negligible.", journal = "Materials Science Forum", title = "Adsorption of some weak organic electrolytes from aqueous solutions on silica", volume = "555", pages = "195-+", doi = "10.4028/www.scientific.net/MSF.555.195" }
Milonjić, S. K., Zhigunova, L. K.,& Pavasovic, V. Lj.. (2007). Adsorption of some weak organic electrolytes from aqueous solutions on silica. in Materials Science Forum, 555, 195-+. https://doi.org/10.4028/www.scientific.net/MSF.555.195
Milonjić SK, Zhigunova LK, Pavasovic VL. Adsorption of some weak organic electrolytes from aqueous solutions on silica. in Materials Science Forum. 2007;555:195-+. doi:10.4028/www.scientific.net/MSF.555.195 .
Milonjić, Slobodan K., Zhigunova, L. K., Pavasovic, V. Lj., "Adsorption of some weak organic electrolytes from aqueous solutions on silica" in Materials Science Forum, 555 (2007):195-+, https://doi.org/10.4028/www.scientific.net/MSF.555.195 . .