Sustainable treatment of laundry wastewater using Moringa oleifera seed extract as a natural biocoagulant: Performance and optimization
Keywords:
toxicity, COD, BOD, optimal, turbidityAbstract
This study evaluates the potential of Moringa oleifera seed extract as an eco-friendly biocoagulant for treating synthetic laundry wastewater. Laboratory-scale experiments were conducted using a jar test procedure, with doses of moringa seed extract ranging from 10 to 50 mg/L. The coagulation efficiency was analyzed based on turbidity removal, chemical oxygen demand (COD) reduction, and total suspended solids (TSS) reduction, and the performance was compared to conventional coagulants, including alum and ferric chloride. Results indicate that the optimal dose of moringa seed extract was 40 mg/L, achieving 52% turbidity removal, 35% COD reduction, and 75% TSS reduction. While the turbidity removal efficiency of moringa seed extract was lower than that of alum (92%) and ferric chloride (90%), its performance in TSS reduction was comparable. The findings suggest that moringa seed extract can serve as a sustainable alternative to chemical coagulants, particularly for TSS reduction, with the added benefits of biodegradability and low toxicity. However, its moderate efficacy in turbidity and COD removal indicates that it is best utilized as part of an integrated treatment process. The study highlights the potential of Moringa oleifera as a cost-effective and environmentally friendly solution for wastewater management, particularly in resource-limited settings.
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