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Table 3 Physicochemical characteristics of effluent before and after treatment with adsorbents GA and GAM

From: Nanosilver-decorated nanographene and their adsorption performance in waste water treatment

S. no Water quality parameters Textile effluent
Before treatment After treatment with GA After treatment with GAM
1. Temperature (°C) 29.9 29.9 29.9
2. Colour, hazen 158 7 17
3. Odour Decaying fruit flavour No characteristic odour No characteristic odour
4. pH at 27 °C 9.10 9.25 8.19
5. Turbidity, NTU 51 3 8
6. Total alkalinity, as CaCO3 (mg/l) 620 1220 160
7. Total hardness, as CaCO3 (mg/l) 750 550 110
8. Biochemical oxygen demand, (mg/l), 27 °C, 3 days 1334 407 79.5
9. Chemical oxygen demand (COD) (mg/l) 3625 897 274
10. Chlorides, as Cl (mg/l) 700 550 170
11. Total dissolved solids (mg/l) (evaporation method) 2270 2130 560