Method for preparing porous ceramic material for adsorbing heavy metals

Abstract

The invention discloses a method for preparing a porous ceramic material for adsorbing heavy metals. The method comprises the following steps: preheating a raw material I in pug to the temperature of 60-70 DEG C, and maintaining for 2 hours; stirring with a raw material II in a mixer at a low speed for 4-6 minutes; and finally, mixing and processing in the mixer at a high speed for 14-20 minutes. The method disclosed by the invention has the beneficial effects that the method for preparing the porous ceramic material for adsorbing the heavy metals in the invention meets adsorption on most of heavy metal ions by combining clay, zeolite and natural ore, and the adsorption of the heavy metal ions is full. Moreover, due to a porous structure of activated carbon, the adsorption capacity of the heavy metal ions is increased, and the adsorption efficiency of the heavy metal ions is greatly improved by virtue of an SCX solution added during ceramic preparation.

Description

technical field [0001] The invention relates to a preparation method of a ceramic material, in particular to a preparation method of a porous ceramic material for absorbing heavy metals. Background technique [0002] Heavy metals originally refer to metals with a specific gravity greater than 5 (metals with a density greater than 4.5 grams per cubic centimeter), including gold, silver, copper, iron, lead, etc. Heavy metal pollution is different from the pollution of other organic compounds. Many organic compounds can be purified physically, chemically or biologically in nature to reduce or eliminate their harmfulness. Heavy metals are enriched and difficult to degrade in the environment. Heavy metals are widely distributed in the atmosphere, water, soil, and organisms, and the sediment is often the storage and final destination of heavy metals. When the environment changes, the form of heavy metals in the sediment will be transformed and released to cause pollution. Heavy ...

AI Technical Summary

Problems solved by technology

[0003] Soil pollution caused by heavy metals is very serious, making a lot of land unusable and seriously threatening human health

[0004] So far, heavy metal pollution is still a problem that has attracted the attention of the society. When the existing ceramic materials adsorb heavy metals in the soil, the adsorption capacity is small, and some metal ions cannot be adsorbed, so the purification effect on the soil is poor.