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The use of Phospho soda has been known to lead to acute phosphate nephropathy. According to the U.S. Food and Drug Administration (FDA), "Acute phosphate nephropathy is a form of acute kidney injury that is associated with deposits of calcium-phosphate crystals in the renal tubules that may result in permanent renal function impairment.
As more aluminum sulfate is added, water pH decreases. At higher pH, the soluble species Al(OH) 4 − is present. In neutral pH ranges (6–8), the insoluble aluminum hydroxide (Al(OH) 3) occurs. As pH decreases further, the Al(III) ion remains present. [2] Maintaining optimal pH is important for the removal of phosphorus from water.
One formulation is (by weight) lactic acid 12–18%, gluconic acid 2.50–3.75%, lauramine oxide 1.50–3.25%, with the remainder being water. [3] The product also contained phosphoric acid at one time, [ citation needed ] but it is now phosphate-free.
Calcium phosphate stones account for approximately 15% of kidney stone disease. Calcium phosphate stones tend to grow in alkaline urine, especially when Proteus bacteria are present. It is the most common type in pregnant women. [6] Calcium phosphate is the usual constitution of microcalcifications of the breast, particularly dystrophic ...
In the 1960s scientists recognized that phosphates in water caused eutrophication. [23] There was disagreement at that time about whether water with high phosphate came to have the chemical because of somehow being polluted with it. [23] By the 1970s it was established that high phosphate levels in water were a consequence of pollution. [23]
By 2018, inappropriate storage has become a major problem in the Yangtze River watershed, with phosphorus accounting for 56% of all breaches of water quality standards. Phosphorus, which still remains in phosphogypsum, can lead to eutrophication of bodies of water and hence algal blooms or even anoxic events ("dead zones") in the lower layers ...
In the U.S., trisodium phosphate is an approved flux for use in hard soldering joints in medical-grade copper plumbing. The flux is applied as a concentrated water solution and dissolves copper oxides at the temperature used in copper brazing. Residues are water-soluble and can be rinsed out before plumbing is put into service.
The water industry commonly uses a blended-phosphates formulation to deal with both issues. [7] Phosphates convert any leached ions into a layer of scale that acts to separate the metal piping from the water. [8] Phosphate-type inhibitors may cause eutrophication issues downstream or directly encourage algal growth in uncovered, treated water ...