Process for the elimination of hydrogen sulfide or iron sulfide from an aqueous system
First Claim
1. A process for the elimination of hydrogen sulfide, iron sulfide or a mixture of iron sulfide and hydrogen sulfide from an aqueous system comprising adding to the system an effective amount of a water soluble low molecular weight condensation product of acrolein and formaldehyde in the molar ratio of 1:
- 1 to 1;
10, said condensation product having been produced in the presence of a basic catalyst, to react with said hydrogen sulfide, said iron sulfide, or said mixture, and form an odor free aqueous solution.
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Abstract
There are employed water soluble low molecular weight polycondensation products produced by the condensation of acrolein and formaldehyde in a molar ratio between 1:1 and 1:10 in aqueous or aqueous-organic medium in the presence of a basic catalyst for the elimination of hydrogen sulfide and iron sulfide present in aqueous systems. The condensation reaction can also be carried out in the additional presence of water soluble monohydric or polyhydric alcohols and/or acid amides.
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Citations
18 Claims
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1. A process for the elimination of hydrogen sulfide, iron sulfide or a mixture of iron sulfide and hydrogen sulfide from an aqueous system comprising adding to the system an effective amount of a water soluble low molecular weight condensation product of acrolein and formaldehyde in the molar ratio of 1:
- 1 to 1;
10, said condensation product having been produced in the presence of a basic catalyst, to react with said hydrogen sulfide, said iron sulfide, or said mixture, and form an odor free aqueous solution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- 1 to 1;
Specification