Bio-Based Polyurethane Foams with Enriched Surfaces of Petroleum Catalyst Residues as Adsorbents of Organic Pollutants in Aqueous Solutions

摘要: In this study the surface of bio-based polyurethane foam was enriched with different contents catalyst residue from petroleum industry. The foams were prepared contents, 20, 50, and 80 wt% relative to total mass polyols characterized by several techniques, X-ray diffraction, fluorescence spectrometry, field emission scanning electron microscopy, energy-dispersive spectroscopy, microtomography, Fourier transform infrared spectroscopy thermogravimetric. To determine removing process effects various operating parameters, pH solution (2–12), initial concentration pesticides (5–50 mg L−1), contact time (15–1440 min), amount adsorbent (30–400 mg) investigated in a batch adsorption technique. specific area determined BET method as up 150 m2/g mean pore diameter 4.20 ± 0.42 nm (mesopore), which explains excellent results materials process. high capacity is probably due presence highly concentrated on surface. Trifluralin pesticide removed water using these 20.0 mg L−1 herbicide, 30.0 mg of, 5.0 pH, 25.0 °C temperature. chemically 50 (PURC50) have higher capacities (70%) can be used remove trifluralin natural waters effectively. efficiency herbicide increased 83% use 400.0 mg mass. pure reaches maximum (95.3%). established appropriate for contaminated waters.