【摘要】 多胺化合成球形Ni2+模板交联壳聚糖吸附剂,该吸附剂对重金属镍离子具有更好的吸附能力。试验结果表明,通过模板化、胺化使吸附容量由1.072mmol/g提高到2.746mmol/g。通过不同吸附剂的红外光谱分析、含水率和Ni2+吸附容量的比较,验证了技术路线的正确性。研究了吸附剂对Ni2+的吸附性能,其对Ni2+的吸附具有较好的动力学性能。更多还原

【Abstract】 A polyaminated and Ni2+ templated cross-linked chitosan bead (P-C-CTS (Ni)) was novelly prepared by introducing polyethylene polyamine to increase the adsorption sites to Ni2+. The P-C-CTS (Ni) with higher adsorption capacity of 2.746mmol/g, 2.6 times as that of the unpolyaminated one, was obtained. The structures of semifinished products were determined by FT-IR and the adsorption capacities to Ni2+ were comparatively analyzed,which validated the synthesis of P-C-CTS (Ni) in desirable processes. The appearance of P-C-CTS (Ni) was characterized by SEM and the adsorption property to Ni2+ was investigated. It is confirmed that the adsorbent with great adsorption property had good kinetic property for adsorption to Ni2+.更多还原