Potential of Natural-Based Polymers for Particle and Humic Acid Removal from Wastewater
In this study, two cationic polymers (Nalco 71305 and Nalco starch) were selected from the list of 21 different polymers. Both polymers were further tested for their ability in particle removal, humic acid removal and the decrease of other wastewater parameters. Jar test studies were used for experiments with polymer dosage in the range of 1-20 mg/L. Both Nalco 71305 and Nalco starch had almost similar performances in turbidity removal. A maximum of around 90% removal at 20 mg/L dosage was obtained. A comparison of humic acid removal in demineralised water and wastewater was made to study the wastewater matrix effect. High humic acid removal of around 70% is achieved in demineralised water compared to 30% in wastewater. Phosphate and COD removal were also reported.