Sulfur dioxide absorption into sodium hydroxide and sodium sulfite aqueous solutions

1985 ◽  
Vol 24 (1) ◽  
pp. 7-11 ◽  
Author(s):  
Chung Shih Chang ◽  
Gary T. Rochelle
Keyword(s):  
Sulfur Dioxide ◽  
Aqueous Solutions ◽  
Sodium Hydroxide ◽  
Sodium Sulfite

Moments analysis of restricted ternary diffusion: sodium sulfite + sodium hydroxide + water

1985 ◽  
Vol 63 (11) ◽  
pp. 2933-2939 ◽  
Author(s):  
Derek G. Leaist
Keyword(s):  
Sulfur Dioxide ◽  
Sodium Hydroxide ◽  
Diffusion Coefficients ◽  
Sodium Sulfite ◽  
Pure Water ◽  
Alkaline Solutions ◽  
Coupled Flow ◽  
Ternary Diffusion ◽  
Aqueous Sodium ◽  
Ternary Diffusion Coefficients

Ternary diffusion coefficients can be determined from restricted-diffusion experiments by evaluating zeroth and first time moments of the difference in a concentration-dependent property measured at two levels along the diffusion column. The method is used to determine ternary diffusion coefficients for aqueous sodium sulfite + sodium hydroxide solutions from conductance measurements. It is shown that these data can be analyzed to obtain the ternary diffusivity of sulfur dioxide in strongly alkaline solutions where sulfite is the major transporting species for the sulfur dioxide component. At high pH values, coupled flow of hydroxide ions leads to a significant increase in the diffusivity of the sulfur dioxide component relative to its diffusivity in pure water. Binary diffusion coefficients for aqueous sodium sulfite solutions are also reported.

Absorption of sulfur dioxide into aqueous sodium hydroxide and sodium sulfite solutions

AIChE Journal ◽  
1977 ◽  
Vol 23 (4) ◽  
pp. 538-544 ◽  
Author(s):  
Haruo Hikita ◽  
Satoru Asai ◽  
Tadashi Tsuji
Keyword(s):  
Sulfur Dioxide ◽  
Sodium Hydroxide ◽  
Sodium Sulfite ◽  
Aqueous Sodium Hydroxide ◽  
Aqueous Sodium

scholarly journals Deep desulfurization of sintering flue gas in iron and steel works based on low-temperature oxidation

2020 ◽  
Vol 18 (1) ◽  
pp. 1370-1380
Author(s):  
Hua Meng
Keyword(s):  
Sulfur Dioxide ◽  
Low Temperature ◽  
Sodium Hydroxide ◽  
Flue Gas ◽  
Sodium Sulfite ◽  
Low Temperature Oxidation ◽  
Treatment Unit ◽  
Temperature Oxidation ◽  
Desulfurization Rate ◽  
Deep Desulfurization

AbstractThe deep desulfurization method of sintering flue gas based on the low-temperature oxidation method is studied. Based on the analysis of the main principle of deep desulfurization of sintering flue gas, a deep desulfurization system of sintering flue gas is constructed, which is composed of an absorption washing unit and a washing solution treatment unit. Sodium hydroxide solution is used as the desulfurizing absorbent to mix with the sintering flue gas entering the reaction tower. Sulfur dioxide in the sintering flue gas reacts with sodium hydroxide to generate sodium sulfite, and sodium sulfite is oxidized to produce sodium sulfate; ozone is produced by ozone generator, nitrogen oxide compounds are oxidized by ozone to generate oxyacid, which is easy to be removed by sodium hydroxide washing solution, and the detergent is the same as that used to remove sulfur dioxide and dust. The experimental results show that the highest desulfurization rate and denitrification rate of the proposed method are 90% and over 22%, and the reaction efficiency and economy are significantly better than that of the comparative method, which shows that the method is reasonable and effective.

Determination of subnanogram amounts of sulfur dioxide and sulfites by pneumatopotentiometry

1986 ◽  
Vol 51 (10) ◽  
pp. 2077-2082 ◽  
Author(s):  
Jan Langmaier ◽  
František Opekar
Keyword(s):  
Sulfur Dioxide ◽  
Redox Potential ◽  
Sodium Hydroxide ◽  
Porous Membrane ◽  
Membrane Electrode ◽  
Iodine Monochloride ◽  
Membrane Pores ◽  
Relative Standard ◽  
Limit Of Quantitation

Gold porous membrane electrode has been used for the potentiometric determination of small amounts of sulfur dioxide absorbed in the solutions of sodium tetrachloromercurate or sodium hydroxide. Sulfur dioxide is released by the reaction with an acid into a stream of nitrogen and led to the electrode immersed into the solution of iodine monochloride. Part of SO2 penetrates through the membrane pores into the solution where it is oxidized. The electrode redox potential change is a measure of the SO2 concentration in the absorption solution. In the solution of 1 . 10-5 M[ICl2]- in 0.02 M-HClO4 the limit of quantitation was found to be 0.07 ng SO2 . ml-1. The relative standard deviations of 1.4% and 2.5% were found for the determinations of 10 ng and 0.5 ng of SO2, respectively. Higher concentrations of H2S interfere only in the hydroxide solution. About 10 samples can be analyzed per one hour.

Absorption of Sulfur Dioxide with Sodium Hydroxide Solution in Spray Columns

2015 ◽  
Vol 54 (35) ◽  
pp. 8670-8677 ◽  
Author(s):  
Zhanke Wang ◽  
Yu Peng ◽  
Xiaocong Ren ◽  
Shaoyong Gui ◽  
Guangxu Zhang
Keyword(s):  
Sulfur Dioxide ◽  
Sodium Hydroxide ◽  
Sodium Hydroxide Solution ◽  
Hydroxide Solution

The alkali-induced elimination of phosphate from β-casein

1972 ◽  
Vol 39 (2) ◽  
pp. 189-194 ◽  
Author(s):  
W. Manson ◽  
T. Carolan
Keyword(s):  
Aqueous Solutions ◽  
Sodium Hydroxide ◽  
Inorganic Phosphate ◽  
Type A ◽  
Dilute Aqueous Solutions

SummaryThe dephosphorylation of β-casein, type A1, by dilute aqueous solutions of sodium hydroxide has been studied. It has been found that the mechanism whereby inorganic phosphate is liberated by the action of alkali is one of β-elimination from O-phosphoserine residues which are themselves converted initially to dehydroalanyl residues.

Electrolytic Interaction of Nylon with Aqueous Solutions of Sodium Hydroxide

1952 ◽  
Vol 56 (1) ◽  
pp. 50-56 ◽  
Author(s):  
Frederick T. Wall ◽  
Thomas J. Swoboda
Keyword(s):  
Aqueous Solutions ◽  
Sodium Hydroxide
Sign in / Sign up

Export Citation Format

Share Document