以生物质废弃物螃蟹壳为原料,通过简单的化学处理制成磁性微球,再经二异丁胺(DIBA)修饰合成了生物质吸附剂FCS-DIBA[FCS:Fe3 O4与壳聚糖(CS)复合微球].FCS-DIBA对Re(Ⅶ)具有很高的吸附选择性,最大吸附量可达185 mg/g,而且不受环境酸度的影响,在pH =2条件下可实现Re(Ⅶ)与Cu(Ⅱ)、Zn(Ⅱ)、Mn(Ⅶ)和Fe(Ⅲ)等常见共存金属离子的分离,该吸附等温线符合Langmuir方程.此外,对FCS-DIBA吸附铼的机制和吸附稳定性能等进行了探讨.
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