Recovery and Preconcentration of Phenols from Aqueous Solutions with a Magnetic Sorbent Based on Fe3O4 Nanoparticles and Hyper-Cross-Linked Polystyrene

Resumo

A procedure was suggested for recovering and concentrating phenols (phenol, 4-nitrophenol, 2-chlorophenol, and pentachlorophenol) from aqueous solution using a newly synthesized sorbent: magnetite nanoparticles modified with hyper-cross-linked polystyrene. The sorbent particle size, limiting sorption, specific surface area, and saturation magnetization were determined. A novel concentrating cartridge that ensures sorption under dynamic conditions using the magnetic sorbent was developed, and its performance was evaluated. The dynamic sorption allows quantitative recovery of phenols with a concentration factor of 530–1360.