Performance Of Natural Coagulants For Wastewater Treatment With Respect To Industrial Coagulants

Abstract

The main objective of this research was to compare the effectiveness of natural coagulants with that of a commonly used chemical coagulant in treating leather wastewater. We aimed to identify a more sustainable and eco-friendly alternative to chemical coagulants for wastewater treatment in the leather industry. Corn powder outperformed all other coagulants in TDS removal by 80.89% at a dosage of 40 mg/L, demonstrating an efficient and potentially eco-friendly alternative for treating wastewater. Moringa seed and tamarind seed followed closely in their ability to remove 68.75% and 72.50%, respectively. Neem leaf and PAC showed the least effectiveness in reducing TDS, with a percentage of 60.98% and 40.89%, respectively. At a dosage of 40 gm/L, coagulants demonstrate good performance in reducing TDS. Neem leaf proved most effective in BOD removal, with a percentage of 91.67% at a 40 gm/L dosage. At higher dosages, Moringa Oleifera takes the lead in BOD reduction, followed by polyaluminium chloride (PAC). Corn powder shows the comparatively best conductivity removal at an 80 gm/L dosage. Tamarind seed powder, Moringa oleifera seed powder, Neem leaf powder, and PAC show increasing conductivity. Tamarind seed powder and Moringa oleifera powder show good performance in pH adjustment.