Research Article
Off-Site Lime Stabilisation as an Option to Treat Pit Latrine Faecal Sludge for Emergency and Existing On-Site Sanitation Systems
Table 1
Average lime dosage used in small-scale field trials.
| Reactor (desired pH) | Initial pH | Sludge wt (kg) | Initial TS (% w/w) (wet basis) | Lime dose (kg) | Lime dosage % w/w (dry basis) |
| Control | 6.7 ± 0.2 | 29.7 ± 6.4 | 9.3 ± 2.4 | 0.0 ± 0.00 | 0 ± 0.0 | pH 10 | 6.8 ± 0.3 | 33.3 ± 6.6 | 9.8 ± 2.4 | 0.3 ± 0.07 | 11 ± 2.7 | pH 10.5 | 6.8 ± 0.2 | 33.9 ± 6.4 | 8.2 ± 0.7 | 0.4 ± 0.07 | 14 ± 1.1 | pH 11 | 6.8 ± 0.2 | 31.3 ± 7.3 | 8.6 ± 0.3 | 0.4 ± 0.10 | 16 ± 0.6 | pH 11.5 | 6.8 ± 0.2 | 31.1 ± 6.8 | 10.0 ± 0.3 | 0.5 ± 0.10 | 15 ± 2.4 | pH 12 | 6.7 ± 0.2 | 33.5 ± 7.2 | 9.0 ± 1.6 | 0.6 ± 0.16 | 20 ± 1.0 |
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±: standard deviation across four replica experiments.
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