重金属的危害及利用水滑石对其处理的研究

当生物体内重金属积累到一定程度后会出现受害症状,整个生态系统的结构、功能崩溃。水滑石是一类阴离子型层状化合物,其具有独特的层状微孔结构和阴离子的可交换性,可利用其吸附作用来降解水中的Pb(Ⅱ)离子。将谷氨酸引入水滑石层间,制备谷氨酸柱撑水滑石,考察其吸附水中重金属离子Pb(Ⅱ)的能力,最终得到适宜的制备条件。

When the heavy metals in organisms accumulate to a certain extent, the damage symptoms will appear, and the structure and function of the whole ecosystem will collapse. Hydrotalcite(HT) is a kind of anionic layered compounds. It has unique layered microporous structure and anion exchangeability. It can be used to degrade Pb(Ⅱ) ions in water by its adsorption.Glutamic acid was introduced into the interlayer of hydrotalcite to prepare glutamic acid pillared hydrotalcite. The adsorption capacity of glutamic acid pillared hydrotalcite was investigated, and the suitable preparation conditions were obtained.