Background and Aims: Aromatic hydrocarbons are the common pollutants used in many industries. Among the aromatic compounds, aniline has a widespread application in the chemical industry. Regarding its dangerous effects on human and the environment health, there are severe limitation on water containing aniline. This study aimed to remove aniline from aqueous solution using the activated carbon produced from cotton stalks.
Materials and Methods: All aniline absorption tests were done on activated carbon produced in batch reactors and containing 50 ml Erlenmeyer flask with a volume of 100 ml and concentrating on aniline and absorbent regarding different parameters including pH (2-4-6-8-10 ), adsorbent dose (0.02-0.04-0.06 and 0.08 mg / l), the dose of absorbing (50-100-150V 200 mg / l), exposure duration of (5-15-30-40-50-and 60 minutes) temperature (10-20-40 and 50 ° C).
Results: According to the results the optimum values obtained were, 60 minutes with 82.05% efficiency, a dose of 0.06 mg / l with efficiency of 90%, the concentration of 50 mg / l with an efficiency of 75.64%, pH 6 with an efficiency of 67.71% as. Also, studies on carbon isotherm follows the Langmuir isotherm (R2> 0.9989) and synthetic quadratic equation.
Conclusion: According to the results of this study and considering the absorption capacity of carbon, it can be accepted and suggested as a suitable, cheap and local alternative for Merck Carbon Standard, to treat water and wastewater pollutants.
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