Abstract
The effectiveness of ultrasonication as a pre-treatment method for the psychrophilic anaerobic treatment of aquaculture effluents was assessed using a 4 1 solids digester. Ultrasonication of aquaculture wastewater was found to enhance the removal of chemical oxygen demand by anaerobic digestion by almost 10%. There was also a concurrent increase in total biogas production from 0.29 1 day-1 to 0.45 1 day-1 with a corresponding 10% increase in methane concentration. Furthermore, there was an increase of 60% in effluent total ammonia nitrogen concentration as a result of sonication in comparison with a 45% increase for untreated digester waste.
| Original language | English |
|---|---|
| Pages (from-to) | 823-830 |
| Number of pages | 8 |
| Journal | Environmental Technology |
| Volume | 22 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2001 |
Keywords
- Anaerobic digestion
- Aquaculture effluents
- Biogas yield
- Ultrasonication