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Photocatalytic removal of reactive yellow 145 dye from simulated textile wastewaters over supported (Co, Ni)3O4/Al2O3 co-catalyst

Mohammad E. J., Lafta A. J., Kahdim S. H.

Polish Journal of Chemical Technology

2016

Vol. 18, nr 3

1--9

The supported co-catalyst (Co, Ni)3O4/Al2O3 was prepared via using a co-precipitation method. Three sets of these materials were prepared by calcination at three different temperatures 500, 600, and 700°C. Crystal structure of the prepared materials was investigated using powder X-rays diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), Atomic force microscope (AFM), and specific surface area (BET). The activity of the prepared catalysts was investigated by following both of photocatalytic and adsorption removal of Reactive yellow 145 dye (RY 145) from simulated industrial wastewaters. In this study, different reaction conditions were performed such as effect of pH of the reaction mixture, mass dosage of the used catalyst, and effect of temperature. In addition to that adsorption isotherms and reaction kinetics were investigated. Also the activity of these catalysts were investigated after cyclization of the used catalysts.

Vlianie vysokocastotnyh elektromagnitnyh polej na process adsorp'cii asfal’tenov

Kovaleva L. A., Kamaltdinov I. M., Zamula U. S., Stepanova Z. U., Haritonova I. V.

Prace Naukowe Instytutu Nafty i Gazu

2012

nr 182 wyd. konferencyjne

639--644

The experimental results of the polar hydrocarbon adsorption in saturated porous media after radio-frequency (RF) electromagnetic (ЕМ) influence and the thermal heating for comparison are presented. Temperature dependences of the extracted volume of hydrocarbons from models are shown. Comparing the obtained data an additional influence of RF ЕМ field on the desorption of asphaltenes from the porous media surface has been found, that leads to an increase of the extraction of hydrocarbons from the models. The thermodynamic substantiation and mathematical modeling of heat and mass transfer in а saturated porous media under RF ЕМ influence are used as the basis of theoretical study. The equation of sorption kinetics based on the Henry's Law including а summand that represents the contribution of thermal and ЕМ fields is to be considered. Researches have discovered that the adsorption process slows down under RF ЕМ field influence, which has а positive effect on the filtration ability of the saturated rock. Investigation of the field influence on the asphaltene adsorption process using atomic force microscopy (AFM) was conducted to identify the mechanism of adsorption and desorption of polar components on the surface of the porous medium under the RF EM field influence.