APLIKASI KOAGULAN POLYALUMINUM CHLORIDE DARI LIMBAH KEMASAN SUSU DALAM MENURUNKAN KEKERUHAN DAN WARNA AIR GAMBUT

Abstract

Aluminum foil of milk packaging waste has a high aluminum content, so it can be used in the synthesis of coagulants Polyaluminum Chloride (PAC). The content of aluminum in the waste was extracted using HCl 15% for 150 minutes at room temperature to produce monomer AlCl3. AlCl3 monomer formed was polymerized by the addition of Na2CO3 25% and waiting for 24 hours in order to obtain a liquid coagulant Polyaluminum Chloride. PAC coagulant was characterized by pH and aluminum content, then it was compared to PAC SNI 06-3822-1995. Synthetic PAC coagulant was used in peat water treatment processes in order to decrease parameters turbidity and color intensity, then it was compared to PERMENKES No.492/MENKES/PER/IV/2010 about "Drinking Water Quality Requirements". PAC coagulant showed that pH 2.3 and Al2O3 content 1.07%. Synthetic PAC coagulant successfully reduced turbidity and color intensity of peat water after coagulation by 97.98% and 98.54%, respectively. Based on these parameters, only parameter turbidity have qualified PERMENKES No.492/MENKES/PER/IV/2010.