Process for controlling calcium oxalate scale over a wide pH ran

Details Process for controlling calcium oxalate scale over a wide pH ran Process for controlling calcium oxalate scale over a wide pH ran

1987-10-23

1989-02-14

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

210701, 252181, C02F 514

Patent

active

048044768

ABSTRACT:
This invention is directed to the use of an improved composition for inhibiting the precipitation of calcium oxalate in aqueous systems. The composition contains: (a) a water soluble phosphate; and (b) a water soluble polycarboxylate having a weight average molecular weight of about 7,000 to about 9,000; wherein the ratio of component (a) to component (b) ranges from 10:1 to 1:10.

REFERENCES:
patent: 4575425 (1986-03-01), Boffardi et al.
patent: 4634532 (1987-01-01), Logan et al.
patent: 4640793 (1987-02-01), Persinski et al.

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