The character and ability of hydrotalcite-like compounds as a water treatment agent.

为了揭示类水滑石类化合物作为水处理剂的特点，考察了其对硝酸盐、硼、氟的去除能力及其机理。类水滑石化合物以前被认为是阴离子交换剂的一种。然而，部分阴离子似乎被吸附在氢氧化物表面，氢氧化物是由水滑石类化合物在水中分解产生的。这一新发现可以解释类水滑石化合物对硼和氟的强去除能力。通过对类水滑石化合物在某些钢铁工业废水中除硼、除氟的应用，说明了该类化合物具有实用价值

In order appear the characteristics of hydrotalcite-like compounds as a water treatment agent, the removal ability and mechanism of nitrate, boron, Fluoride was examined.Hydrotalcite-like compounds were formerly considered as one of anion exchanger. However, some part of the anions appeared to be removed by adsorption on the surface hydroxide made by the decomposition of the hydrotalcite-like compounds in water.This new finding can explain the strong removal ability of Boron and Fluoride by hydrotalcite-like compounds. By the application of hydrotalcite-like compound for boron or Fluoride removal in some effluents from steel industry, it is appeared that these compounds are interesting from practical viewpoint