Utilization of mangosteen pericarp (Mp) as a natural coagulant to reduce alum dosage in the removal of water turbidity

Abstract

Natural coagulants which are naturally acquired coagulants have longed to have potential to substitute chemical coagulants due to their availability, cost effectiveness, nontoxic and biodegradable natures. In this research, the treatment of high turbidity synthetic water is carried out by coagulation method by substituting alum with Mangosteen Pericarp stock solution in a certain given percentage. This study unveils the potential and effectiveness of mangosteen pericarp as an environmentally friendly natural coagulant for the treatment of high turbid water. This is to show the efficiency of mangosteen pericarp as a substitute to alum as the experiment would substitute certain percentage of alum with mangosteen pericarp from 0% up to 25% substitution ratio. The mangosteen pericarp solution is obtained by boiling, drying, powdering and mixing with distilled water. The results obtained from the test showed that mangosteen pericarp could work efficiently work along the pH at the slow speed setting. An average of 70% to 80% turbidity removal percentage is obtained from the overall performance across 4 pH settings. In the fast setting, works best in pH 8 with a fast speed setting of 150 RPM for 3 minutes as it achieves a 98% turbidity and TSS removal percentage with 25% replacement of 10g/L of alum. Therefore, mangosteen pericarp has the potential as a coagulant to substitute alum in the water treatment process