Fertilizer
A fertilizer and phosphate technology, applied in organic fertilizers, sewage/sludge fertilizers, fertilization devices, etc., can solve problems such as eutrophication of waterways and excessive growth of aquatic plants
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Embodiment 1
[0043] Example 1 - Phosphate Leaching from Pellets of Bauxsol and Superphosphate
[0044] Bauxsol was prepared as described here using a hydraulic press at an applied compression of 294Mpa TM Compressed pellets with a ratio of superphosphate fertilizer within a certain range. The resulting pellets had a diameter of about 1 cm, a thickness of about 3 mm and an average weight of 1 g. Accurately weigh several pellets into a flask and add 100 mL of Milli-Q water. The pellets and water were allowed to equilibrate over several days, and the water was periodically subsampled and analyzed for phosphorus in phosphate. The weight of the pellets is chosen to ensure that there is an excess of solids and that equilibrium can be achieved. After removing the water from each sample, the amount of water removed was replaced with fresh Milli-Q water, and the mixture was kept for a few more days before the next subsampling was performed. The test was run for 65 days to establish the phosphor...
Embodiment 2
[0046] Example 2 - Leaching of Phosphorus from Compositions of the Invention by Simulating Rainfall Events
[0047] The experiment simulated repeated rainfall events for different ratios of superphosphate and Bauxsol TM Effect of the prepared pellets. Several pellets with a total weight of 1 g were placed in a beaker and 100 mL of Milli-Q water was added. The pellets were stirred for 5 minutes and then held for 1 hour. The water was then stripped for analysis and replaced with fresh Milli-Q water and the process repeated. Given the surface area of the beaker, the volume of water added, and the mass of phosphate present, each flush is roughly equivalent to 30 mm of rain falling on a well-drained soil fertilized with typical superphosphate fertilizer rates for 1 hour superior. The decanted liquid from each flush was analyzed for P and the cumulative loss of phosphorus was recorded as a proportion of the total available P. figure 2 The cumulative loss of phosphorus from t...
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