In this study, eggshell as a biomaterial was used as an adsorbent. This natural waste material is easy to access and cost-free. The surface of the eggshell with its porous structure showed affinity to adsorb damaging chemicals. In particular insecticides cause serious environmental pollution in agriculture, and this is a general problem all over the world. The aim was to remove insecticides from the environment and monitor the pesticides on the surface of eggshells by atomic force microscopy (AFM) images, Fourier transform infrared (FTIR) and UV/Vis spectroscopic techniques. Five types of eggshells, Denizli Hen, Coturnix Coturnix Japonica, Light Brahma Chicken, Alectoris Chukar and ISA Tinted -White , were used. Since they are commonly used, Cypermethrin, Deltamethrin and Indoxacarb were chosen as insecticide samples. The interaction effect of insecticides on the surface of eggshells was determined by AFM images; it was seen that the semispherical surface structures of the eggshells were flattened after adsorption. FTIR spectroscopy was used both to detect structural analysis and to determine the adsorption influence. In addition, UV-Vis spectroscopy was performed to evaluate the adsorption and desorption process. Porous media of different types of eggshells with an aqueous solution of insecticides had an electronegativity attractive surface which makes it an ideal adsorbent via hydroxyl groups.

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Defining the adsorption behavior of common pheasant Phasianus Colchicus (PC) eggshells for some metal ions (Pb, Cu, Al, and Ag) is the subject of this study. In addition to that, these metals have also been chosen in many studies to prevent environmental pollution. In this study, the adsorption of some metal ions (Pb, Cu, Al and Ag) to Phasianus Colchicus (PC) eggshell was investigated by some spectroscopic methods. The adsorption process has taken place in an aqueous solution. Differences in inner, outer and membrane surface of Phasianus Colchicus (PC) eggshell were examined with AFM images, FTIR spectroscopy was used to determine the main structure of the eggshell, before and after adsorption. To detect the concentration of each metal on eggshell samples, the ICP-OES spectrometric technique is used. The results show that Phasianus Colchicus (PC) eggshell can be used as a biosorbent for adsorption of Pb, Cu, Al, and Ag from water.