RESUMO
Sodium Silicate is a chemical compound that has properties such as water glass is a colorless, soluble in water, and is widely used in industry. Therefore, the extraction of sodium silicate by alkaline fusion is followed by water leaching. The alkaline fusion process is a technique that is often used and can further simplify the extraction process. The purpose of this research in general is to obtain the optimum conditions for the extraction of sodium silicate from the Sidoarjo mud in an alkaline fusion process followed by water leaching. The alkali used in the alkaline fusion process is Na2CO3. The effect of various experimental conditions on fusion has been studied. These variables include the amount of alkali used, the reaction temperature, and the length of the reaction time. The alkaline fusion process proved that sodium silicate could be produced and could be separated in water leaching. The highest percentage of sodium silicate extraction was 43.6% resulting from water leaching conditions with a solid-liquid ratio of 1:5, a temperature of 80 °C for 2 h.
