Bentonite/Magnetite Composite for Removal of Nitrofurazone

摘要: The presence of pharmaceutical pollutants in the environment is one most pressing environmental problems. Adsorption from solution an effective way to remove pharmaceuticals liquid media, but problem then separate adsorbent liquids. objective present study was nitrofurazone aqueous solutions using a bentonite/magnetite composite, prepared by co-precipitation magnetite with bentonite, which could be collected magnetic separation. composite characterized diverse techniques, such as X-ray diffraction, scanning electron microscopy, low-temperature N2 adsorption/desorption, laser and magnetization measurements. particle size material did not exceed 50 μm distribution mono-modal maximum at 3.2 μm. strong hysteresis curve revealed that particles were ferromagnetic. measured amount adsorbed 3.2×10–2 mmol/g. adsorption kinetics followed pseudo-second-order equation. Upon adsorption, hydrogen bonds formed between amide groups oxygen bentonite.