A Novel Adsorbent Prepared by Aluminum-Containing Waste Residue and Its Application for Congo Red Wastewater Decolorization  

作　　者：Longfei Zhang Xiaogang Han Jinxin Mu Longfei Zhang;Xiaogang Han;Jinxin Mu(College of Architecture and Civil Engineering, Kunming University, Kunming, China;Changzhou Qingliu Environmental Protection Technology Co., Ltd., Changzhou, China)

机构地区：[1]College of Architecture and Civil Engineering, Kunming University, Kunming, China [2]Changzhou Qingliu Environmental Protection Technology Co., Ltd., Changzhou, China

出　　处：《Advances in Materials Physics and Chemistry》2023年第9期161-176,共16页材料物理与化学进展（英文）

摘　　要：Modified aluminum slag (MAS) was applied as an adsorbent for Congo red (CR) prepared by the hydrothermal treatment of Ca(OH)₂. At 25°C, with a MAS dosage of 0.3 g, initial CR concentration of 100 mg/L and initial pH = 5, and the adsorption time was 40 min, the CR removal efficiency was 98.41%. The adsorption trend of CR conformed to the second-order kinetics, and the adsorption isotherm follows the Freundlich isotherm model. Compared with RAS, MAS has a larger pore volume and specific surface area. The mechanism of action of MAS on CR was the interaction between membrane diffusion and internal diffusion, and the adsorption rate during the membrane diffusion was the fastest.Modified aluminum slag (MAS) was applied as an adsorbent for Congo red (CR) prepared by the hydrothermal treatment of Ca(OH)₂. At 25°C, with a MAS dosage of 0.3 g, initial CR concentration of 100 mg/L and initial pH = 5, and the adsorption time was 40 min, the CR removal efficiency was 98.41%. The adsorption trend of CR conformed to the second-order kinetics, and the adsorption isotherm follows the Freundlich isotherm model. Compared with RAS, MAS has a larger pore volume and specific surface area. The mechanism of action of MAS on CR was the interaction between membrane diffusion and internal diffusion, and the adsorption rate during the membrane diffusion was the fastest.

关 键 词：Modified Aluminum Containing Waste Congo Red Adsorption WASTEWATER 

分 类 号：O64[理学—物理化学]