Theyab G Hussein Al-Joubory, Emad A Saleh Al-Hyali and Mustafa R Al-Hadeethi
The research included the use of nano-activated carbon commercial carbon and the diagnosis of nano activated carbon using different, techniques such as infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), dispersion energy x-rays sine (EDX) Besides surface area analysis (BET), as it showed the results of a spectrum (FT-IR)the activated carbon does not contain, any active group, that is, it is chemically inert, and this is a good characteristic of nano activated carbon, as shown by the results of (XRD) the average crystal size of, the prepared activated carbon was found to be equal to (16.973) nm, which confirms that the prepared carbon contains nanoparticles, as shown by the results (SEM) and the (EDX) the sizes of the prepared carbon particles are approximately between (25.98-111.83 nm) and that the shape of the stomata (pores) on the surface bear the characteristics of nano materials with their properties, and that the highest percentage of carbon was (87.46%), and this result supports the efficiency of nano activated carbon and its use in the adsorption process, in addition to that, activated carbon has a surface area obtained according to the theory (BET) How much (712.81) m2/g, It is very suitable for use as an adsorbent, and the adsorption of some chemical pesticides from their aqueous solutions was studied using commercial activated carbon. the study included the effect of each of the amount of adsorbent, the effect of contact time, the effect of the initial concentration, the effect of the pH function and the effect of temperature on the adsorption system, the study showed that the adsorption efficiency follows the following order for the pesticides under study (GOL ˃ TFR) on the surface of, activated carbon, and that the adsorption system reaches equilibrium at a time of (50-60) min, and the highest percentage of adsorption on the surface of, activated carbon, is at the (pH=4) and the best amount was (0.1) gm of adsorbed substance to the system, and from studying the effect of temperature, it is clear that the percentage of pesticide adsorption on the surface of activated carbon decreases with increasing temperature, as well as studying the effect of the initial concentration. the adsorption efficiency decreases with increasing concentration, but the adsorption capacity (qe) increases with Increase focus when the temperature is constant.
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