Topic
Dithionic acid
About: Dithionic acid is a research topic. Over the lifetime, 7 publications have been published within this topic receiving 13 citations. The topic is also known as: H2S2O6 & [(HO)(O)2SS(O)2(OH)].
Papers
Patent•
15 Jul 1985
TL;DR: In this paper, the authors proposed to stably treat waste water containing a sulfur compound and to reduce the consumption amount of utility by adding mineral acid and hydrogen peroxide to said waste water to treat the same at definite pH and temp.
Abstract: PURPOSE:To stably treat waste water containing a sulfur compound and to reduce the consumption amount of utility, by adding mineral acid and hydrogen peroxide to said waste water to treat the same at definite pH and temp. CONSTITUTION:Waste water 1 containing COD components (mainly, dithionic acid ion S2O6 ) is passed through an ion exchange tower 2 packed with a medium basic or weak basic type anion exchange resin and the dithionic acid ion S2O6 is removed by adsorption to obtain treated water 3. In the next step, sulfuric acid 5 and hydrogen peroxide 23 are preliminarily added to a regeneration conc. waste solution desorbed by regenerating the ion exchange resin and the resulting solution is heated to 100 deg.C by steam 15 in a hermetically closed type decomposition tank 14 to decompose the dithionic acid ion S2O6 . Subsequently, thermally decomposed treated water is recovered in a sulfuric acid storage tank 22 and used as mineral acid for the regenerative desorption of the ion exchange resin or the substitution liquid of the ion exchange resin after desorption.
4 citations
3 citations
Patent•
24 Apr 1978
TL;DR: In this paper, the authors proposed a method to prevent formation of dithionic acid and an accumulation of it within the system when oxidizing calcium sulfite formed at desulfurization of exhaust gas into gypsum, by inhibiting by the addition of chlorine ions the action of iron ions exerting a catlaytic action.
Abstract: PURPOSE:To prevent formation of dithionic acid and an accumulation of it within the system when oxidizing calcium sulfite formed at desulfurization of exhaust gas into gypsum, by inhibiting by the addition of chlorine ions the action of iron ions exerting a catlaytic action.
2 citations
Patent•
9 Feb 1978
TL;DR: In this paper, the lime-gypsum process was used to make harmless dithionic acid by oxidizing it to sulfuric acid cheaply with simple operation, by electrolyzing the waste fluid containing dithion acid discharged from the desulfurization equipment with the lime gypsus process, under the specified condition by using a carbonaceous electrode as the anode and an insoluble metal as the cathode.
Abstract: PURPOSE:To make harmless dithionic acid by oxidizing it to sulfuric acid cheaply with simple operation, by electrolyzing the waste fluid containing dithionic acid discharged from the desulfurization equipment with the lime-gypsum process, with direct current under the specified condition by using a carbonaceous electrode as the anode and an insoluble metal as the cathode.
2 citations
Patent•
4 Aug 1978
TL;DR: In this paper, a CaSO3 slurry formed by absorbing SO2 into gypsum with preventing formation of a byproduct dithionic acid by blowing O2 or air into the slurry at prescribed pH in the presence of one more out of sulfates of alkali (earth) metals and NH3.
Abstract: PURPOSE:To convert a CaSO3 slurry formed by absorbing SO2 into gypsum with preventing formation of a by-product dithionic acid by blowing O2 or air into the slurry at prescribed pH in the presence of one more out of sulfates of alkali (earth) metals and NH3.
1 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2007 | 1 |
| 2001 | 1 |
| 1985 | 1 |
| 1978 | 3 |
| 1902 | 1 |