Research Article
Biosorbent Efficacy of Groundnut Husk for the Elimination of Chromium from the Effluent of Mojo Tannery Industry, Ethiopia
Table 1
Physicochemical characteristics of untreated tannery effluent.
| Parameters | Detected value | WHO standard for drinking water (a) | NEQS limit discharge (b) | Remarks |
| Color | Blue-gray | Aesthetic value | — | — | Odor | Foul smell | Aesthetic only | — | — | pH | 3.40 | 6.5–8.5 | 6–9 | Exceed both a and b | TDS | 1400 mg/L | 600–1000 mg/L | 3500 | Exceed a | (EC) | 1342 μS/cm | Less than 400 μS/cm | — | Exceed a | Total chromium (Cr) | 12.25 mg/L | 0.05 mg/L | 1 mg/L | Exceed both a and b | Lead (Pb) | 0.17 mg/L | 0.01 mg/L | 0.5 mg/L | Exceed a |
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