Magnetic loaded acorns based on activated carbon and aqueous solutions

Activated carbon is known as carbonaceous adsorbents with its large crystal form and very large internal pore structure. Activated carbons are useful products that do not harm human health and nature and have very high porosity and inner surface area. The most common adsorbent known and used is activated carbon. In this study, activated carbon was obtained by chemical activation of the acorn inner shells with H3PO4. It is aimed to remove the dyestuff from the water by giving magnetic property to the activated carbon obtained. Analytical methods such as SEM, FT-IR, XRD and BET have been used to determine the characteristics of the acorn inner shell, activated carbon and magnetite activated carbon. Adsorption conditions include the amount of adsorbent (0.1-1.0 g), initial pH (2-9), initial dye concentration (25-100 mg / L), contact time (5min-180min), temperature (298-318K) were examined according to the parameters. The optimum pH = 6 for adsorption, the adsorbent amount was 0.1 g and the appropriate temperature was determined as 298K. According to the data obtained from both Langmuir and Freundlich isotherms, it is observed that the results are more suitable for Langmuir isotherm. The maximum maximum adsorption capacity of magnetite activated carbon at 298K was found to be Qmax = 156.25mg / g. Kinetic and thermodynamic studies were also conducted. Desorption process was performed to determine the recovery capacity of magnetite activated carbon. Desorption procedures with NaOH were repeated 7 times in succession. When the results were examined, it was shown that the activated carbon is a low cost, natural and easily applicable adsorbent.