Notice of RetractionAdsorption Removal of COD from Wastewater by the Activated Carbons Prepared from Sugarcane Bagasse

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

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The activated carbons were prepared by soaking sugarcane bagasse in 0.39% AlCl₃ solution and followed by carbonization in a charcoal kiln at 400°C for 2 days and then by activation in a muffle furnace at 900°C for 100 minutes. The adsorption removal of chemical oxygen demand (COD) from molasses alcohol wastewater by the prepared activated carbons was then studied in a batch adsorption system. The amount of COD adsorbed per unit mass of adsorbent decreased with increasing adsorbent dose from 18.97 to 8.18 mg/g and the percentage of COD removed from solution increased continuously from 6.90 to 58.73% with increasing adsorbent dose from 100 to 2000 mg in 50 mL solution with the initial COD concentration of 557 mg/L. With increasing COD concentration from 55 to 549 mg/L, the amount of COD adsorbed per unit mass of adsorbent increased from 1.04 to 13.57 mg/g. The dynamical data fit very well with both the pseudo-first-order kinetic model and the pseudo-second-order kinetic model. The Freundlich model showed higher correlation with the experimental adsorption data in comparison with the Langmuir model.