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Removal of Turbidity, Po , and No from Wastewater by Coagulation-Flocculation Process Using Vigna Radiata Extract: Effect of Operating Parameters and Coagulation-Flocculation Mechanism

SSRN, ISSN: 1556-5068
2024
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Article Description

The study optimized the coagulation-flocculation process using Vigna radiata extract (VRC) to reduce turbidity, PO4, and NO3 from wastewater, analyzing factors like dosage, pH, stirring time, and speed. The experimental design optimized coagulation parameters: pH: 11, coagulant dosage: 50 ml/L, stirring time: 43 min, and stirring speed: 56 rpm; resulting in 97.51%, 96.86%, and 56.98%, for turbidity, PO , and NO removal, and generated a sludge volume of 9.0 ml/L. Real aquaculture wastewater treated at pH 7, with the optimized conditions, had a maximum of 76.91%, 12.56%, and 51.8% for turbidity, PO , and NO removal, respectively. A comparison study of the natural coagulant with the alum and FeSO4 as chemical coagulant showed similar results; however, the sludge volumes generated by the chemical coagulants were significantly higher than that of the natural coagulant. The study suggests that VRC can effectively treat wastewater from the aquaculture industry through adsorption and charge neutralization mechanisms

Bibliographic Details

Amina Adedoja Owodunni; Suzylawati Ismail

Elsevier BV

Multidisciplinary; aquaculture wastewater treatment; Natural Coagulant; optimization; Response Surface methodology; Vigna radiata seed

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