E. Sada

Absorption of no in aqueous mixed solutions of NaClO2 and NaOH

Abstract The absorption of NO in aqueous mixed solutions of NaClO2 and NaOH was carried out using a semi-batch stirred vessel with a plain gas—liquid interface at 25°C. The rate of absorption was discussed on the basis of chemical absorption theory under the fast-reaction regime. The overall reaction involved was presented by 4NO + 3NaClO2 + 4NaOH = 4NaNO3 + 3NaCl + 2H2O and was found to be second-order with respect to NO and first-order with respect to NaClO2 in the range of NaClO2 concentration greater than 0.8 molar. The reaction rate constants evaluated were exponentially decreased with the NaOH concentration and correlated by k = k0 exp(−3.73 CEO).

Single gas absorption with reaction in a slurry containing fine particles

Abstract Two models are presented for the absorption process with a finite rate of reaction in a slurry containing fine particles. These are extensions of Ramac As an experimental verification of two proposed models, experiments with carbon dioxide or sulfur dioxide were performed into a slurry containing fine

Absorption of NO in aqueous solutions of KMnO4

Abstract The absorption of NO in aqueous solutions of KMnO 4 and aqueous mixed solutions of KMnO 4 and NaOH was carried out using a batch stirred vessel w

Absorption of lean SO2 in aqueous solutions of Na2CO3 and desorption of CO2

Abstract The absorption of lean SO2 in aqueous solutions of Na2CO3 was carried out using a stirred vessel with a plain gas—liquid interface and the rates of absorption of SO2 and desorption of CO2 accompanying the chemical absorption were measured. The process of SO2 absorption and CO2 desorption was analyzed in terms of a two-reaction-planes model which states that the reactant CO32− cannot coexist with the reaction product HSO3−. Observed absorption rates compared well with theoretical predictions, whereas the observed desorption rates from aqueous Na2CO3 solutions with higher concentrations had a tendency to decrease gradually with increasing enhancement factor, though calculated desorption rates should be independent of absorption rates under the present experimental conditions. The absolute values of the desorption rates, however, agreed reasonably well with theoretical values.

Chemical absorption into a finite slurry

Abstract Film theory of gas absorption with an instantaneous reaction into an aqueous slurry solution was extended to the case of a finite slurry. The theory was applied to the experiments on the absorption of dilute sulfur dioxide into magnesium hydroxide slurry in a self-induced spray scrubber.

Absorption of carbon dioxide in aqueous solutions of sodium phenoxide

Abstract The absorption rates of carbon dioxide into aqueous solutions of sodium phenoxide were measured using a laminar liquid jet, a wetted wall column and a