Turbidity Removal of Synthetic Wastewater Using Biocoagulants Based on Protein and Tannin

摘要

River water polluted by garbage is a problem for residents around the river. This has a negative impact on human survival, especially in health. The process of coagulation and flocculation is a common method used in the water treatment process. Coagulants used in this study were chemical coagulants i.e. PAC as reference of chemical coagulant and biocoagulants (i.e. moringa, chickpea and avocado seed; moringa was used as reference of biocoagulants). The aims of this study were to study the effect of biocoagulants dosages to the performance of biocoagulants marked by the decrease of turbidity, total dissolved solid (TDS) and electrical conductivity (EC). FTIR measurement was carried out to confirm the presence of functional groups acting as active groups in the coagulation process (i.e. -OH, -COOH, -NH). A wide range of coagulant dosage (0.01-0.03 g/200 mL) and synthetic turbid water at pH 7-10 were used to evaluate the coagulation process. The results showed that the highest turbidity removal for chickpea and PAC achieved at the dosage of 0.03 and 0.01 g, respectively as much as 78.06 % and 99.80 %.