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- 저자 : Jovana Milanovic (검색결과 1 건)
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Nataša Knezevic,Jovana Milanovic,Zlate Velickovic,Milena Miloševic,Marija M. Vuksanovic,Antonije Onjia,Aleksandar Marinkovic 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.126 No.-
Oxidized cotton linters, TOCell, were used as an adsorbent or derived membrane there from by linterscross-linking with citric acid. The adsorption/desorption study of Pb2+, methylene blue (MB), and crystalviolet (CV) removal, was performed. Adsorption data fitting, obtained using the Langmuir model, gave116 mg g1 (Pb2+), 179 mg g1 (MB) and 482 mg g1 (CV) at 25 ℃ for TOCell linters, while 101 mg g1(Pb2+), 165 mg g1 (MB) and 426 mg g1 (CV) for TOCell membrane. After desorption dyes were subjectedto photocatalytic degradation while lead was transformed into stable lead phthalate (LP), and furtherused as filler in composites based on unsaturated polyester resins (UPR). UPR was synthesized fromwaste polyethylene terephthalate (PET). Structural characterization was performed using FTIR, SEM,and NMR methods. Composites loaded with acryloyl modified kraft lignin (A-KfL) and/or LP was testedfor tensile strength, Vickers microhardness, and fire resistance (UL-94 V method). The best mechanicaland fireproofing properties were obtained at 15 wt.% A-KfL and 40 wt.% Al(OH)3 addition. The resultsof the toxicity leaching test (TCLP) confirmed the environmentally safe stabilization of desorbed pollutantin the UPR matrix. Application of environmentally friendly membranes, susceptible to easy biodegradation,had low negative effects to the environment.
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