Coagulation and Antimicrobial Activities of Maringa oleifera Seeds in Water Purification

Abstract

In this study, proximate analysis, jar test, turbidity, pH measurement and microbial count were carried out, to evaluate the coagulation and antimicrobial activities of Moringa oleifera seeds. Defatted Moringa oleifera seeds obtained by solvent extraction of Moringa oleifera seeds powder used n-hexane and seed cake was dried. Protein was obtained by extraction used NaOH. Results of this study revealed that seeds powder is rich in lipids (33.33%) and has carbohydrate, protein, moisture and ash content of 31.64%, 25.70%, 6.00%, 3.33% respectively. The pH of Moringa oleifera treated water were not significantly increased at the tested dose levels (50 – 500 mg/L), the pH Value of raw water 8.0 and treated water observed 7.9. The coagulation and antimicrobial efficiency of Moringa seeds, defatted seeds and protein extract solutions were carried out at different concentration in turbid surface water. There was progressive decrease in coliform count as seed dose increases, the lowest values 9x10² MPN/mL, 6x10² MPN/mL and 2x10² MPN/mL respectively at the dose (500mg/L) and the lowest turbidity values 14.3 NTU, 8.9 NTU and 5 NTU respectively at the dose 500 mg/L. These findings suggest that Moringa oleifera seeds good coagulation and antimicrobial.