Phosphorus Recovery Potential in Anaerobic Digestion Residues
This study investigated the phosphorus recovery potential of the anaerobic digestion residues of four different wastes, namely, poultry manure, mixture of swine and cattle manure and energy plants, mixture of poultry manure and maize silage, and sewage sludge. A phosphorus balance was conducted over the process. The calculations depicted that 80–99 % of the phosphorus remain in the solid phase of the digester samples. To increase the efficiency of the phosphorus recovery, P-dissolution process was applied to both the liquid and the solid phase samples with a phosphorus release rate of 76–100%. Several experiments were conducted under different conditions by P-dissolved solutions. The results depicted that the adjustable operational parameters of struvite precipitation process (P:Mg molar ratio, pH) affect the type of the precipitating mineral but not the recovery efficiency. Overall mass balance depicted that the rate limiting step in the process is the P-dissolution i.e. the release of the bound phosphorus into the aqueous phase. This study depicted that 77 – 98% of the phosphorus present in anaerobic digestion residues can be recovered via application of a novel P-dissolution process prior to struvite precipitation.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
Document Type: Research Article
Publication date: 2011-01-01
More about this publication?
- Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites