Evaluation of Moringa oleifera seeds as a natural solution in comparison to alum for combatting common aquatic pathogenic bacteria by coagulation and antibacterial action
Résumé
Abstract Conventional water treatment methods typically involve chemicals and mechanical processes; there is growing interest in exploring natural and sustainable alternatives. This study assessed Moringa oleifera seed as a natural coagulant for water purification, comparing its effectiveness with alum. Water samples from various sources were treated with different concentrations of Moringa seed powder. The coagulation-flocculation activity indicated that increasing Moringa concentrations raised pH levels within the World Health Organization’s (WHO) recommended range. At 400 mg/l, Moringa reduced turbidity by up to 89.19% in river water, while alum achieved a higher reduction at the same concentration. Moringa seeds significantly reduced bacterial counts, achieving up to 98.65% in wastewater at 400 mg/l, compared to alum’s 97.29%. Total coliform decreased by 95.00% and fecal coliform by 100%. Moringa seeds also exhibited antibacterial and anti-oxidant properties, with an expected concentration needed to scavenge 50% of free radicals (EC50 value) of 3.926 mg/ml. Proximate analysis revealed high protein (33.67%) and fat (36.45%) content. Phytochemical analysis confirmed the presence of bioactive compounds such as alkaloids, tannins, saponins, phenols, and flavonoids. High-performance liquid chromatography (HPLC) identified 14 phenolic and flavonoid compounds, with the most abundant vanillic acid (74.95%). M. oleifera demonstrated adequate removal effectiveness, supporting its potential application in water treatment as a sustainable, eco-friendly, and cost-effective solution alternative to conventional coagulants in regions facing water pollution concerns.
Citer ce document
Accès au document
Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter
Voir l'article sur le site de la revueAuteur(s)
Statistiques
Consultations : 1
Téléchargements : 0