Table 7. Isothermal drying kinetic parameters of faecal sludges.
Temperature (°C) | Effective Moisture Diffusivity (m 2/s) | |||
---|---|---|---|---|
ABR | HF | UDDT | VIP | |
55 | 1.9∙10 -7 | 1.7∙10 -7 | 1.8∙10 -7 | 1.9∙10 -7 |
85 | 5.0∙10 -7 | 3.7∙10 -7 | 4.8∙10 -7 | 5.6∙10 -7 |
105 | 10.0∙10 -7 | 7.4∙10 -7 | 7.5∙10 -7 | 11.0∙10 -7 |
Activation
Energy (kJ/mol) |
34 ± 0.8 | 30.5 ± 0.1 | 28.3 ± 1.3 | 36 ± 0.3 |
ABR, anaerobic baffled reactor; HF, human faeces; UDDT, urine-diverting dry toilet; VIP, ventilated improved pit.