A dry scrubber use catalyst to remove toxic components by chemical adsorption on the surface. The adsorption does not depend on pollutant concentration and contact time, adsorption will take place in very short period of time. When the pollutants adsorbed on to the surface, the catalyst will convert the simple chemicals which is non-toxic and can be disposed of easily. The catalyst is to be replaced frequently when it saturated with pollutants. Optional sensor will be provided for indication of catalyst saturation.

Meta Etch Scrubber

                Traditionally etching was performed by hand. It was implemented by using sharp tipped tool to etch metal according to desired design pattern. This process is time consumable. Nowadays the most popular metal etching is acid etching as the chemical technology has improved, since chemical milling is much faster than mechanical milling. Metal etching is process of creating design on metal surface using acid or mordant. The most commonly used chemicals are nitric acid, hydrochloric acid, potassium chlorate and Ferric Chloride. These acids will be used in different concentrations.