وحيد رضائي

This study was conducted under different laboratory conditions such as the pH of the solution and the amount of adsorbent to eva‎luate the potential of magnetic activated carbon obtained from walnut skin to remove dye effluents of methylene blue and methyl orange. From the saturation ratio of 1:0.8, activated carbon and zinc chloride were heated by chemical activation method at 600 degrees Celsius in an electric furnace made by Pajohan company under nitrogen gas. And finally, co-precipitation method has been used for the synthesis of magnetic active carbon. According to the obtained results, the magnetic adsorbent synthesized with magnetic nanoparticles has good absorption power. Also, the resulting samples were analyzed and eva‎luated using BET, SEM, UV-vis, XRD, FT-IR and EDX elemental analysis to identify the structure of the absorbent. 1074.2 m2/g and 895.25 m2/g was reported for the magnetic absorber. using VSM analysis, the magnetic strength of the synthesized adsorbent was favorable, and by using Langmuir isotherm, the maximum adsorption capacity to remove methylene blue dyes was 210 mg/g and methyl orange 186 mg/g. Also, this adsorbent has the ability to be separated from the solution with a magnet in a short period of time, which can be a suitable alternative to expensive and time-consuming methods such as centrifugation and filtration.

كربن فعال، جاذب مغناطيسي، جذب سطحي، رنگ متيلن بلو، رنگ متيل اورانژ.

Activated Carbon, Magnetic Adsorbent, Surface absorption, Methylene Blue and Methyl Orange Color.

Vahid Rezaei

Toraj Mohammadi