Application of diatomite

[Application] Diatomaceous earth is mainly used as a catalyst, filter aid, thermal insulation material, light building materials and fillers, etc.
It can be used as a deodorant, cosmetic raw material, slow release agent, mosquito coil filler, liquid in daily chemical products electric mosquito porous wick opening, heat oxidation, and the like
.

Natural diatomaceous earth has a good adsorption effect on dyes such as methyl blue, reactive black, and reactive yellow
.

Table 4-10 The adsorption effect of natural diatomaceous earth on dyes

Table 4-11 shows the research results of domestic and foreign researchers using modified diatomite to adsorb dyes
.

Table 4-11 The adsorption effect of modified diatomite on dyes

The electroplating wastewater is treated with diatomaceous earth modified by a solution of cetyltrimethylammonium bromide with a mass concentration of 10% , as shown in Table 4-12
.

Table 4-12 Adsorption effect of modified diatomite on Pb ²⁺ , Cu ²⁺ , Zn ²⁺ in electroplating wastewater

Using diatomite modified with calcium carbonate to treat heavy metal ions Cu ²⁺ , Cr ³⁺ , Pb ²⁺ and Zn ^{2+ in} wastewater has a good adsorption effect, see Table 4-13
.

Table 4-13 The effect of modified diatomite to treat 4 kinds of heavy metal ions

After diatomaceous earth is modified by sodium hydroxide and roasted at high temperature, the removal effect of Fe ^- in wastewater is obviously better than that of original soil
.

Table 4-14 The influence of diatomite modification on Fe ^- removal effect

Using microwave radiation technology and sulfuric acid to activate and modify diatomaceous earth, it is used to treat domestic sewage, and it has a good adsorption effect on sulfide and COD, see Table 4-15

Table 4-15 Effect of modified diatomite in sewage treatment