Removal of Phenolic Compounds from Aqueous Solutions Using Sludge-Based Activated Carbons Prepared by Conventional Heating and Microwave-Assisted Pyrolysis |
| |
Authors: | Glaydson S. dos Reis Matthew A. Adebayo Carlos H. Sampaio Eder C. Lima Pascal S. Thue Irineu A. S. de Brum Silvio L. P. Dias Flavio A. Pavan |
| |
Affiliation: | 1.Engineering School, Department of Metallurgy,Federal University of Rio Grande do Sul (UFRGS),Porto Alegre,Brazil;2.Department of Chemistry,Federal University of Agriculture,Abeokuta,Nigeria;3.Institute of Chemistry,Federal University of Rio Grande do Sul (UFRGS),Porto Alegre,Brazil;4.Federal University of Pampa (UNIPAMPA),Bagé,Brazil |
| |
Abstract: | Sludge-derived activated carbons (ACs) were prepared by conventional heating and microwave pyrolysis. The ACs were characterized using several analytical and functional techniques and used for removal of six phenolic compounds from aqueous solutions. The adsorbents exhibited similar features and possessed hydrophobic surfaces. The ACs were assigned mesoporous materials, with specific surface areas of up to 641 and 540 m2 g?1 for CAC-500 and MAC-980, respectively. The preliminary results indicated that phenol removal onto the ACs increased in the order: m-cresol?Q max) of hydroquinone adsorbed at 25 °C were too high, reaching 1218.3 and 1202.1 mg g?1 for CAC-500 and MAC-980, respectively. The mechanism of adsorption was proposed in this work, and it was suggested that donor–acceptor complex and π–π interactions play major roles in the adsorption process. The adsorbents were also tested on simulated effluents. The two ACs displayed good efficiency for the treatment of industrial simulated effluents. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|