Magnetic Carbon Microspheres as a Reusable Adsorbent for Sulfonamide Removal from Water

• Published in: Nanoscale research letters 2017-09, Vol.12 (1), p.528-528, Article 528
• Main Authors: Dai, Kewei, Wang, Fenghe, Jiang, Wei, Chen, Yajun, Mao, Jing, Bao, Jian
• Format: Article
• Language: English
• Subjects: Adsorption; Carbon; Carbon sources; Chemistry and Materials Science; Iron oxides; Kinetics; Magnetic Carbon Microspheres (MCMs); Materials Science; Microspheres; Molecular Medicine; Nano Express; Nanochemistry; Nanoparticles; Nanoscale Science and Technology; Nanotechnology; Nanotechnology and Microengineering; pH effects; Raw materials; Reusability; Roasting; Sulfonamide; Surface area; Surface chemistry; Water treatment
• ISSN: 1931-7573; 1556-276X
• DOI: 10.1186/s11671-017-2295-2

Novel reusable magnetic carbon microspheres (MCMs) were prepared by hydrothermal method with glucose as carbon source and Fe 3 O 4 nanoparticles as magnetic raw materials. And adsorption performance of MCMs for sulfonamide removal from water was investigated in detail. The results indicated that the calcination temperature and calcination time had significant effects on the surface area and its volume porous of MCMs. When MCMs were calcined in 600 °C for 1 h, the surface area and volume porous of MCMs were 1228 m 2 /g and 0.448 m 3 /g, respectively. The adsorption results showed that the adsorption data fitted well with the Langmuir isotherm model and followed pseudo-second-order kinetics. When the pH value was changed from 4.0 to 10.0, the adsorption capacity of MCMs for sulfonamide was decreased from 24.6 to 19.2 mg/g. The adsorption capacity of as-synthesized MCMs achieved 18.31 mg/g after it was reused four times, which exhibited a desirable adsorption capacity and reusability.