Reducing soluble phosphorus in dairy effluents through application of mine drainage residuals
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Abstract
Three different dairy manure wastewater effluent samples were amended with mine drainage residuals (MDR) to evaluate the suitability of MDR for sequestration of phosphorus (P). Geochemical modeling of the manure wastewater compositions indicated that partially soluble P-bearing minerals including hydroxyapatite, octacalcium phosphate, and vivianite were all oversaturated in each of the manure wastewater samples. Initial MDR amendment test results indicated that these partially soluble P minerals suspended in the wastewater replenished P in the water phase as it was sorbed by the MDR samples. Further investigations revealed that the MDR samples were effective in decreasing soluble P when the amended manure was tested using the water-extractable P procedure. Under these conditions, up to 90 percent of the soluble P in the manure was converted to a sorbed, water-insoluble state. Water contamination and large-scale validation tests of the process were also conducted.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Reducing soluble phosphorus in dairy effluents through application of mine drainage residuals |
| Series title | Communications in Soil Science and Plant Analysis |
| DOI | 10.1080/00103624.2014.998339 |
| Volume | 46 |
| Issue | 5 |
| Year Published | 2015 |
| Language | English |
| Publisher | Taylor & Francis |
| Contributing office(s) | Leetown Science Center |
| Description | 19 p. |
| First page | 545 |
| Last page | 563 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |