Shin, DH Ko, YG Choi, US Kim, WN 2024-01-21T07:14:12Z 2024-01-21T07:14:12Z 2021-09-02 2004-04 0888-5885 https://pubs.kist.re.kr/handle/201004/137740 We have been searching a new ion exchange material in the form of a fiber which could get large advantages over the conventional bead type. In this approach, an effective chelating fiber is prepared by the coupling of polyacrylonitrile (PAN) and ethylenediamine. A synthesized ion exchange fiber (poly(acrylo-amidino ethylene amine), PAEA) achieved 7.8 mequiv/g of adsorption capacity in a batch test. The coupling process and capacity were confirmed through FT-IR, acid-base neutralization titration, ICP, IC, and AAS. By means of verifying the bonding peaks (hydrogen and ionic bonding) under several pHs, molecular bonding between PAEA and ions (Cu2+ and CrO42-) was certified. Surface morphologies of chelating fibers and also after metal ion adsorption were examined by AFM. Compared with a batch test, the adsorption ability was low due to the diffusion path of ions in the dynamic test. English AMER CHEMICAL SOC Design of high efficiency chelate fibers with an amine group to remove heavy metal ions and pH-related FT-IR analysis Article 10.1021/ie030696f 1 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v.43, no.9, pp.2060 - 2066 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 43 9 2060 2066 N scie scopus 000220990100019 2-s2.0-1942516978 Engineering, Chemical Engineering Article ADSORPTION SEPARATION CU(II) WATER LEAD chelating fibers heavy metal adsorption surface morphology poly (acrylo-amidino ethylene amine)