Utilization Study of Nata De Soya from Soybean Wastewater As Adsorbent On Magnesium (Mg2+) and Calcium (Ca2+) Cations On Boiler Raw Water at PT. SMART Tbk

Abstract

The use of Nata De Soya prepared from soybean wastewater as an adsorbent on magnesium (Mg²⁺) and calcium(Ca²⁺) cations caused hard water in the boiler raw water at PT. SMART Tbk has been studied. Nata De Soya has been activated with H₂SO₄ 1N before use as an adsorbent for Mg²⁺ and Ca²⁺ cations in the boiler raw water. The study resulted demonstrated that the optimum mass of adsorbent to adsorb Ca²⁺cation was 2.5 g with adsorption capacity at 60.64%. Meanwhile, the optimum mass of adsorbent to adsorb Mg²⁺cation was 2.0 g with the adsorption capacity at 66.34%. The regenerated Nata De Soya adsorbent has been also studied to adsorb Ca²⁺and Mg²⁺ cations. In other aspects, the percentage of Ca²⁺ and Mg²⁺ cations decrease by 9.27% and 9.47%, respectively after Nata De Soya treatment to the boiler raw water.