Research Article
Performance Optimization of Chemical and Green Coagulants in Tannery Wastewater Treatment: A Response Surface Methodology Approach
Table 8
Comparison of different coagulants in the removal of TSS and COD from vegetable tannery wastewater.
| | Coagulant | Type of coagulant | Initial concentration | Coagulant dosage (mg/L) | pH | Removal efficiency (%) | Reference |
| | TSS removal | | Chemical coagulant | PACl | 18500 | 600 | 4 | 45 | [66] | | PACl + CA-3130 (coagulant aid) | 18500 | 600 + 65 | 4 | 80 | [66] | | Alum | 3441 | 11600 | 6.09 | 76.36 | Present study |
| | Green coagulant | Cassava starch | 3441 | 2760 | 3.17 | 73.61 | Present study | | Orange peel powder | 3441 | 5160 | 3.74 | 65.79 | Present study |
| | COD removal | | Chemical coagulant | PACl | 27000 | 600 | 4 | 20 | [66] | | PACl + CA-3130 (coagulant aid) | 27000 | 600 + 65 | 4 | 42 | [66] | | Alum | 24928 | 11600 | 6.09 | 38.85 | Present study |
| | Green coagulant | Cassava starch | 24928 | 2760 | 3.17 | 37.01 | Present study | | Orange peel powder | 24928 | 5160 | 3.74 | 17.72 | Present study |
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Initial concentrations of TSS and COD are measured in mg/L and mgO2/L.
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