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Method for purification of the cooling water used in nuclear reactors

  • US 4,642,193 A
  • Filed: 01/25/1985
  • Issued: 02/10/1987
  • Est. Priority Date: 01/30/1984
  • Status: Expired due to Term
First Claim
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1. A method of purifying cooling water used in nuclear reactors and containing at least one of cationic and anionic impurities, which comprises contacting said cooling water with a hydrotalcite compound of the following formula


  • space="preserve" listing-type="equation">M.sub.1-x.sup.2+ M.sub.x.sup.3+ (OH).sub.2 A.sub.x/n.sup.n-.mH.sub.2 O (1)
wherein M2+ represents a divalent metal cation, M3+ represents a trivalent metal cation, An- represents an anion having a valence of n, and x and m satisfy the following expressions


space="preserve" listing-type="equation">0<

x<

0.5


space="preserve" listing-type="equation">0≦

m<

1or a calcined product thereof obtained by calcination at a temperature of up to about 900°

C.

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