Water Purification from Organic Pollutants via Cellulose Foam Modified with Zeolitic Imidazolate Framework an‎d Palmitic Acid

10/12/2026 12:00:00 AM

Organic pollutants an‎d industrial substances cause severe damage to natural resources; therefore, the effective removal of organic pollutants from water is considered a major challenge in environmental remediation an‎d wastewater treatment. In this study, a biocompatible foam based on carboxymethyl cellulose was synthesized an‎d optimized. To enhance hydro‎phobicity an‎d absorption capacity, the foam was subsequently modified with zeolitic imidazolate framework-8 (ZIF-8) an‎d palmitic acid. All materials used in this research are biocompatible an‎d cost-effective. The morphological an‎d structural properties of the modified foam were characterized using field emission scanning electron microscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, atomic force microscopy, energy-dispersive X-ray spectroscopy, a 5-ton SANTAM tensile testing machine, an‎d a contact angle goniometer. The presence of the modifying agents was confirmed by field emission scanning electron microscopy, as well as by the changes observed in the Fourier-transform infrared spectroscopy spectra an‎d energy-dispersive X-ray spectroscopy patterns. After optimizing the synthesis parameters of the foam an‎d its modifiers, the final modified foam (CMC-ZIF-8-PA) exhibited selec‎tive removal of organic pollutants, with a water contact angle of 153.94° an‎d an ultralow density of 0.053 g/cm³. The adsorbent showed excellent adsorption capacity, with the highest uptake for chloroform (38.92 g/g) an‎d the lowest for n-hexane (18.1 g/g). Moreover, the physical, chemical, an‎d mechanical stability of the modified foam were eva‎luated by ultrasonic treatment, exposure to different pH conditions, an‎d stress-strain testing, respectively. In addition, the modified foam retained 86.72% of its initial absorption capacity after 15 absorption-desorption cycles an‎d was able to continuously separate oil an‎d water for up to 10 hours without loss of efficiency. These results demonstrate that the synthesized foam is stable an‎d highly promising as an efficient adsorbent for the treatment of organic pollutant contaminated water under practical conditions

آلاينده آلي , فوق آبگريزي , فوم كربوكسي متيل سلولز , ZIF-8 , پالميتيك اسيد

Superhydro‎phobic , Organic pollutant , Carboxymethyl cellulose , , Palmitic acid , ZIF-8

Melika Ghosi

Prof. Mansoor Anbia