Chitosan was prepared by the deacetylation of chitin which wits isolated from waste marine sources such as crab shell. Chitosan, a natural chelate polymer, could be prepared into a porous granule or globular-bead shaped material, and separation performance of this material was examined for the various metal ions. Chitosan solution with the emulsifier reacted with acetylating agent in a vessel to produce the granule-shaped material. Chitosan solution in acetic arid was dropped into a coagulation solution and obtained the bead shaped material. Upon the pH variation, adsorptivities of these granule and bead shaped materials to the metal ions such as Cu²⁺ and Ni²⁺ ions were determined by batch method. The detection of Cu²⁺ and Ni²⁺ ions adsorbed was confirmed quantitatively by atomic absorption spectrometer, and the porous structure was also confirmed by the SEM (scanning electron microscope) The adsorptivity tendency of these granule and bead shaped materials to the most of metallic ions was increased with increase of pH. As a result, it was confirmed that these granule and bead shaped materials had good porosity and thus had high functional characteristics.

천연 킬레이트 고분자인 chitin을 원료로 하여 분리용 소재로 활용될 수 있는 chitin 및 chitosan의 다공성 granule 및 구형의 성형체를 제조하고 금속이온들의 분리능에 대하여 검토하였다. 실험에 사용된 성형체는 먼저 chitin을 탈N-acetyl화 시킨 chitosan을 원료로 하고, 유화제등을 포함하는 chitosan용액을 acetylating agent를 함유하는 반응액에 첨가하여 granule형태의 성형체를 제조하였고, 또 다른 성형체는 chitosan을 acetic acid에 녹인 후 응고욕에 적하하여 다공성인 구형의 bead를 제조하였으며, 이 때 알킬리금속의 염화물을 첨가하여 다공성이 증가된 여러가지 성형체를 제조하였다. 제조된 성형체들에 대하여 Cu²⁺, Ni²⁺ 등의 금속이온들에 대한 흡착특성을 검토하고, 나아가 column법에 의한 Cu²⁺, Ni²⁺의 흡착분리특성을 검토하였다. 흡착된 Cu²⁺ 및 Ni²⁺의 검출은 Atomic Absorption Spectrometer로 정량 확인하였으며, 성형체의 다공성은 SEM (Scanning Electron Microscope) 등에 의해 확인하였다.

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