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Maintaining optimal pH is important for the removal of phosphorus from water. Phosphorus is most effectively removed at the neutral pH range, when the insoluble aluminum hydroxide is present. This hydroxide functions as a Lewis acid, [5] creating a flocculation environment similar to conventional wastewater treatment.
2.2 Removal of Rust. 3 Maker. 4 See also. 5 References. 6 External links. ... but it is now phosphate-free. Mechanism of action. Weak acids, such as lactic acid ...
A common example is phosphoric acid, which additionally converts some iron oxide into an inert layer of ferric phosphate. [3] Most of the rust converters contain special additives. [4] They support the rust transformation and improve the wetting of the surface. Applied rust converter
In biochemistry, dephosphorylation is the removal of a phosphate (PO 3− 4) group from an organic compound by hydrolysis. It is a reversible post-translational modification . Dephosphorylation and its counterpart, phosphorylation , activate and deactivate enzymes by detaching or attaching phosphoric esters and anhydrides .
The term phosphate is also used in organic chemistry for the functional groups that result when one or more of the hydrogens are replaced by bonds to other groups. These acids, together with their salts and esters , include some of the best-known compounds of phosphorus, of high importance in biochemistry , mineralogy , agriculture , pharmacy ...
The pyrophosphate anion has the structure P 2 O 4− 7, and is an acid anhydride of phosphate. It is unstable in aqueous solution and hydrolyzes into inorganic phosphate: P 2 O 4− 7 + H 2 O → 2 HPO 2− 4. or in biologists' shorthand notation: PP i + H 2 O → 2 P i + 2 H +