Autonomous mobile platform for monitoring air emissions from industrial and municipal wastewater ponds

Figures & data

Figure 1. The Mobile Platform.

Figure 2. Launching of the Mobile Platform using a crane.

Figure 3. Locations of measurement for day 1 and day 2.

Figure 4. Time series of CH₄ concentration throughout sampling cycles on day 1.

Figure 5. Time series of CO₂ concentration throughout sampling cycles on day 1.

Figure 6. Time series of CH₄ concentration throughout sampling cycles on day 2.

Figure 7. Time series of CO₂ concentration throughout sampling cycles on day 2.

Figure 8. Ambient temperature and wind speed data for day 1 and day 2.

Table 1. Summary of CH₄ and CO₂ emission fluxes on day 1 and day 2.

Emission flux [µmol/(m^2-s)]	CH4 day 1	CH4 day 2	CO2 day 1	CO2 day 2
Minimum	0.93	0.46	3.35	2.65
Maximum	4.02	3.79	5.55	4.47
Average	2.18	1.48	4.32	3.22
Standard deviation	0.86	0.94	0.70	0.43

Figure 9. Time series of CH₄ and CO₂ fluxes on day 1.

Figure 10. Time series of CH₄ and CO₂ fluxes on day 2.

Table 2. Relative contribution of aerobic and anaerobic zones in the lagoon.

	Aerobic bacterial process	Anaerobic bacterial process	Aerobic/anaerobic bacterial process
Day 1	2.14	2.18	0.98
Day 2	1.75	1.48	1.18