Method of water purification
First Claim
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1. Method for the conversion of reducible or oxidizable substances in aqueous solution, which comprises:
- passing an aqueous solution containing said substances through a housing having operatively associated therewith an electrode body and into effective contact with;
at least one immobilized oxidoreductase selected from the group consisting of nitrate-oxidoreductase, nitrite-oxidoreductase, and N2 O-oxidoreductase,which is in effective contact with at least one co-immobilized electron carrier which simultaneously supplies reduction or oxidation equivalents to said oxidoreductase,under conditions supportive of the conversion of said substances; and
recovering water having less of said reducible or oxidizable substances than were in said aqueous solution.
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Abstract
A method for converting reducible or oxidizable substances from aqueous solution is claimed in which the aqueous solution to be treated is brought into contact with immobilized oxidoreductases, if desired, in the presence of co-immobilized electron carriers and at the same time reduction or oxidation equivalents are supplied. Furthermore a potentiometric cell, in particular a flow cell is claimed which contains an electrode body and immobilized oxidoreductases as well as, if desired, co-immobilized electron carriers.
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Citations
26 Claims
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1. Method for the conversion of reducible or oxidizable substances in aqueous solution, which comprises:
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passing an aqueous solution containing said substances through a housing having operatively associated therewith an electrode body and into effective contact with; at least one immobilized oxidoreductase selected from the group consisting of nitrate-oxidoreductase, nitrite-oxidoreductase, and N2 O-oxidoreductase, which is in effective contact with at least one co-immobilized electron carrier which simultaneously supplies reduction or oxidation equivalents to said oxidoreductase, under conditions supportive of the conversion of said substances; and recovering water having less of said reducible or oxidizable substances than were in said aqueous solution. - View Dependent Claims (2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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5. Method as claimed in 1, wherein atomic hydrogen is used as the reduction equivalent.
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6. Method as claimed in 1, wherein atomic oxygen is used as the oxidation equivalent.
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22. A potentiometric cell for converting reducible or oxidizable substances in an aqueous solution comprising:
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a housing including means to permit said aqueous solution to flow therethrough; an electrode body operatively associated with said housing; at least one immobilized oxidoreductase, selected from the group consisting of nitrate-oxidoreductase, nitrite-oxido-reductase, and N2 O-oxidoreductase, so positioned as to be in operative association with aqueous solution flowing through said housing; at least one co-immobilized electron carrier operatively associated with said oxidoreductase by being so positioned as to be in direct molecular vicinity of, and/or bound directly together with, said oxidoreductase, and so positioned as to be in operative association with said aqueous solution flowing through said housing; means to introduce an aqueous solution containing said oxidizable or reducible substance in need of conversion into said housing; means to cause said aqueous solution to flow through said housing in operative association with said immobilized oxidoreductase and said co-immobilized electron carrier under conditions supportive of the conversion of said oxidizable and/or reducible substances with said oxidoreductase; and means to recover a product comprising water and less of said oxidizable and/or reducible substances than was present in said fed aqueous solution from said housing. - View Dependent Claims (23, 24, 25, 26)
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Specification