Topic
Sodium sulfite
About: Sodium sulfite is a research topic. Over the lifetime, 2548 publications have been published within this topic receiving 18523 citations. The topic is also known as: Na2SO3 & Anhydrous sodium sulfite.
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TL;DR: The developed colorimetric method was tolerant to 100-fold (by mass) of common soil anions like sulfate, nitrate, and chloride and was suitable for on-site applications, because the color developed in heterogenous solution was stabilized, and the method can be easily practiced with a portable colorimeter to large numbers of samples.
30 citations
Patent•
19 Nov 2008TL;DR: In this paper, a method for inhibiting amine degradation during CO2 capture from flue gas streams was proposed, which used sodium sulfite (Na2SO3), potassium sodium tartrate tetrahydrate (KNaC4H4O6.cndot.4H20), ethylenediaminetetraacetic acid (EDTA) or hydroxylamine (NH2OH), or analogs or mixtures thereof.
Abstract: The present application includes a method for inhibiting amine degradation during CO2 capture from flue gas streams. Particularly, the present disclosure relates to a method of inhibiting O2- and/or SO2-induced degradation of amines using sodium sulfite (Na2SO3), potassium sodium tartrate tetrahydrate (KNaC4H4O6.cndot.4H20), ethylenediaminetetraacetic acid (EDTA) or hydroxylamine (NH2OH), or analogs or mixtures thereof during CO2 capture by amines.
30 citations
30 citations
TL;DR: In this article, experiments on the absorption of sulfur dioxide and/or nitrogen dioxide diluted with nitrogen into aqueous solutions of sodium hydroxide and sodium sulfite with a plane interface were carried out at 1 atm and 25/sup 0/C in an agitated vessel (15 cm high, 10 cm ID).
Abstract: Experiments on the absorption of sulfur dioxide and/or nitrogen dioxide diluted with nitrogen into aqueous solutions of sodium hydroxide and sodium sulfite with a plane interface were carried out at 1 atm and 25/sup 0/C in an agitated vessel (15 cm high, 10 cm ID). From a mixture with nitrogen oxides and nitrogen, the rate of nitrogen dioxide absorption into aqueous sodium hydroxide solution was enhanced by the presence of the sulfur dioxide, but into aqueous sodium sulfite solution, the rate was reduced. Such absorption behavior arose from the change of sulfite concentration at the gas-liquid interface. Therefore, the rate of nitrogen dioxide absorption with sulfur dioxide can be predicted according to the previously proposed mechanism of competitive reactions of nitrogen dioxide with sulfite and water. These results suggest that it may be possible to develop an economical process for removing sulfur dioxide and nitrogen oxides simultaneously from stack gases by an alkaline solution, especially at high sulfur dioxide concentrations.
30 citations
TL;DR: In this paper, the flat-band potential of CdS electrodes has been investigated and it has been shown that EDTA and other chelating agents, such as 1,2-cyclohexanediaminetetraacetic acid and nitrilotriacetic acids, are adsorbed strongly on the surface of Cds and shift the conduction band energy toward the negative.
Abstract: Photocatalyzed hydrogen evolution on Pt-loaded CdS powder from aqueous solutions of sodium sulfite is enhanced by addition of a small amount of ethylenediaminetetraacetic acid (EDTA) to the solution EDTA is hardly consumed by the reaction It has been concluded from the measurements of the flat-band potential of CdS electrodes that EDTA and other chelating agents, such as 1,2-cyclohexanediaminetetraacetic acid and nitrilotriacetic acid, are adsorbed strongly on the surface of CdS and shift the conduction band energy toward the negative The enhancement of the photocatalytic hydrogen evolution by the addition of EDTA is explained as being caused by the upward shift of the conduction band energy of CdS due to the negative charge of the chelating agents The change of the conduction band energy by the adsorption of EDTA is observed also for CdSe electrodes Although Pt-loaded CdSe powder is inactive for the hydrogen evolution from aqueous solutions of sodium sulfite, it generates hydrogen when EDTA is added to the solution
30 citations