Use of corn carbon as an additive to enhance magnesium metal self-corrosion and recover phosphorus from swine wastewater in the form of struvite.
Study Goal
The researchers aimed to determine the effectiveness of using corn carbon and non-dynamic magnesium metal self-corrosion for phosphate recovery from swine wastewater.
Results Summary
The study found that under optimal conditions (7h reaction time, 5:1 C:Mg mass ratio, 800 rpm stirring, 0.48 m3/L·h aeration), phosphate recovery reached 95.61%, with the precipitate identified as high-quality struvite.
Population
Swine wastewater
Effective Dosage
Mass ratio of corn carbon to magnesium plate was 5:1
Duration
7 hours
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
method for phosphate recovery from swine wastewater using corn carbon as an additive and non-dynamic magnesium metal self-corrosion | increase | phosphate recovery rate | swine wastewater | 95.61% | demonstrated | #1 |
method for phosphate recovery from swine wastewater using corn carbon as an additive and non-dynamic magnesium metal self-corrosion | increase | waste treatment | swine wastewater | - | achieved | #2 |
method for phosphate recovery from swine wastewater using corn carbon as an additive and non-dynamic magnesium metal self-corrosion | increase | phosphorus | swine wastewater | - | recovered | #3 |
Recovery of phosphate from swine wastewater is significant for alleviating eutrophication in aquatic ecosystems and addressing the increasing scarcity of phosphorus resources. In this study, a method for phosphate recovery from swine wastewater using corn carbon as an additive and non-dynamic magnesium metal self-corrosion was studied. The effects of reaction time, C:Mg mass ratio, stirring rate, and aeration rate on phosphate recovery were discussed, and eight experimental models were explored. The results demonstrated that when the optimal reaction time was 7 h, the mass ratio of corn carbon to the magnesium plate was 5:1. When the stirring rate was 800 rpm/min and the aeration rate was 0.48 m3/L·h, the pH value of wastewater was 9.24, and the phosphate recovery rate was 95.61%. The recovered precipitate was characterized by SEM-EDS and XRD as struvite with excellent crystal shape. This method not only successfully achieved waste treatment but also recovered phosphorus from swine wastewater.