Silicon sponge is an alternative to Anthracite. It is a porous material made from silicon that is used in water treatment for filtration and purification. It is valued for its high surface area, chemical stability, and durability, which make it effective at removing contaminants from water. The porous structure of the silicon sponge allows water to flow through while trapping and adsorbing impurities such as organic compounds, heavy metals, and microorganisms. Silicon sponge is often used in advanced water treatment systems, including those designed for the removal of specific pollutants or for applications requiring high-purity water.