Abstract
The river water and groundwater from Lagbe town in Benin Republic were collected and analyzed for physical, chemical and microbiological parameters. The surface water samples were treated with alum, Moringa oleifera seeds powder and the combination of alum and Moringa oleifera seeds. The jar-test essays were carried out with two water samples at initial turbidities 7.2 NTU and 14.4 NTU. The water samples analyzed are fairly mineralized (conductivity varies between 166 and 687 μS/cm), enough soft and contain the nitrate (104 mg/L for W4 sample). They are greatly polluted by pathogenic microorganisms such as Escherichia coli, Klebsiella, Enterococcus, Vibrio, Serratia. The optimal dosages of Moringa are 96 mg/L and 80 mg/L respectively. We have observed a reduction of 60% of turbidity and a substantial remove of all pathogenic microorganisms after water treatment with Moringa oleifera seeds. For the combination treatment, 93% of initial turbidity and 92% of initial concentration of organic matter in the sample E2 were eliminated. The pH remained almost constant during the treatment.
Highlights
Water is an indispensable natural resource for life on earth
We have observed a reduction of 60% of turbidity and a substantial remove of all pathogenic microorganisms after water treatment with Moringa oleifera seeds
The analysis (Tables 2 and 3) of groundwater and surface water samples includes the determination of physico-chemical parameters
Summary
Water is an indispensable natural resource for life on earth. Potable drinking water is the primary need of every human being. Even under such conditions, a few plant seeds make effective coagulants [5] for water treatment as compared to those of alum. In laboratory and field studies, Moringa oleifera seeds extract has shown promise as natural flocculant and coagulant that aid in binding the solids in turbid water [6,7,8,9,10]. The determination of physicochemical and bacterial characteristics of groundwater and surface water quality in the study area and the performance of aqueous extract of Moringa oleifera seeds as primary coagulant and as coagulant aid with alum in treatment of surface water samples was examined and compared with the performance of alum used alone
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