Thus, the present invention is also concerned with the recovery of sulfur dioxide from waste gases in the form of ammonium sulfate. The recovery and utilization ...

... in the cargo tanks. Here the seawater contains sulfur predominantly in the sulfite form. The conversion of sulfite and bisulfite ions to non-polluting sulfate ...

01/01/2002, CA2057418C Cocurrent flow process for the manufacture of sodium sulfite and bisulfite solutions ; 12/2001.

10/30/1996, CN1033157C Granular potassium sulfate and process for producing the same ; 10/22/1996 ...

10/17/2012, CN102351357B Resource utilization of waste water containing phenol and sodium sulfate and treating method.

A ruthenium catalyzed method to synthesize cyclic sulfate compounds from the corresponding cyclic sulfites, and the cyclic sulfate reaction products ...

... sulfites to sulfates such as by the addition of sulfur or other thiosulfate precursors. Sulfur reacts with sulfites to produce thiosulfates. Such sulfite ...

... of calcium carbide, susceptible of generating hydrogen sulfide (H 2 S) and sulfites until forming sulfates. the sulfur in a reducing medium (due to the presence ...

... of salt slurry is calcium carbonate, due to the difference of ... for the content measuring of the calcium sulphate in fixing formula and calcium sulfite.

... sulfites and sulfite free-radicals, sulfate free radicals and other free radicals generated from sulfite free radicals in the soy products or compositions by 1%

The composition of the dried product corresponded to a mixture of hydrated melamine sulfites and sulfates. The difference between the total and sulfite ...

... the color of the product by using seed crystals of alumina or magnesium oxide or sulfate. 03/2005. 03/15/2005, US6866689 Aqueous borohydride compositions. 03/08 ...

The invention relates to an ion chromatography detection method for simultaneously measuring sulfate and sulfite in desulfurized seawater.

... the atom of these replacements or group can be identical or different. ... At 250cm 3In the flask, add 27 gram ethylidene sulfites (0.25 mole), 175cm ...

Each of the four substituents can be different. ... The present invention relates to the rutheniumcatalyzed conversion of cyclic sulfites to cyclic sulfates ...

The trioxide form is believed to result from oxidation of the dioxide within the boiler; in a scrubbing function of the type described herein calcium sulfate is ...

The sulfate, however, is not useful in sulfite pulping processes and must be converted to a different form to be useful in sulfite pulping. We have discovered ...

... of the corresponding cyclic sulphites of the general formula: ... FR2676736A1 1992-11-27 NOVEL CHIRAL SULFATES, THEIR PREPARATION AND THEIR USE IN THE SYNTHESIS ...

It should be noted that the compositions of the present invention comprise additional or different ... In this case, the ratio of sulfites to sulfates is 4.85:1.

... of the solutions. The proposed process consists of contacting the aqueous solutions of sodium sulfites or sulfides with ammonium sulfate preferably in ...