Abstract
This research aimed to evaluate the efficacy of powdered marang (Artocarpus odoratissimus) seed as a biocoagulant compared to aluminum sulfate in treating synthetic water focusing on pH neutralization, turbidity, and total dissolved solids (TDS) removal efficiencies. The marang pulp was removed from the seeds, which were then weighed. After three days of air drying, with 2 to 4 hours of drying per day, the seeds were pulverized into a consistent powder using a mortar and pestle. The powdered seeds were stored in an airtight container until the experiment which was conducted at the laboratory of Zamboanga City Water District using a jar tester, the study involved rapid mixing at 100 rpm for five minutes followed by slow mixing at 40 rpm for 20 minutes, with dosage variations of 50 mg/L, 100 mg/L, 150 mg/L, 200 mg/L, 250 mg/L, and 300 mg/L. Results indicate that aluminum sulfate achieved a maximum pH reduction of 21.3% and turbidity removal of 99.77% at 300 mg/L and 50 mg/L dosage, respectively, while marang biocoagulant exhibited a pH increase of all dosages and turbidity removal of 94.98% at 50 mg/L dosage. The TDS removal efficiencies of aluminum sulfate showed an increase in values with varying dosages (50 mg/L, 150 mg/L, 200 mg/L, 250 mg/L, and 300 mg/L), only at dosage 100 mg/L had a reduction (9.19%) while in marang biocoagulant achieved maximum TDS reduction of 44.57% at dosage 200 mg/L. Statistical analysis revealed there is no significant difference between aluminum sulfate and marang biocoagulant in terms of pH and turbidity removal with a p-values of 0.139 > 0.05 for pH removal and 0.129 > 0.05. However, regarding total dissolved solids (TDS), the p-value of 0.035 < 0.05 indicates a significant difference between the two coagulants. The study suggests further assessment of marang biocoagulant on different parameters and water sources, as well as trials with lower dosages to establish its efficiency. Additionally, comparing dried powdered marang seeds and marang seeds in solution as coagulants is recommended for future research. Ultimately, while marang biocoagulant shows promise as a primary treatment for drinking water, additional treatment may be necessary to meet PNSDW of 2017 standards.