Electrochemical approaches to environmental problems in the process industry

Landfill leachate treatment by electrochemical oxidation

The electrochemical oxidation of aqueous sulfur dioxide: a critical review of work with respect to the hybrid sulfur cycle

Electrochemical redox processes involving soluble cerium species

Electrochemical oxidation of sulfite and sulfur dioxide at a renewable graphite electrode

The electrochemical oxidation of sodium sulphite has been studied in aqueous sodium sulphate solution at two different graphite electrodes, one being of natural graphite (EC) and the other impregnated with phenol (ECK). The objective of the present work was to obtain some insight into the direct oxidation as well as the indirect oxidation, via produced oxygen radical species, of sulphite on non-metal electrodes. For this reason a study of the oxidation of sulphite in the concentration range between 0–0.10m in aqueous sodium sulphate using a batch electrochemical reactor, operating potentiostatically, was undertaken. The potential range was chosen between 1.0 to 2.5 V/SCE, and the concentration of the supporting electrolyte, sodium sulphate, was kept constant at 0.5m. A kinetic Tafel type law, considering irreversible behaviour for the direct sulphite oxidation and the mass transfer performance in regards to the experimental conditions were applied to predict the time variations of the sulphite conversion.

Electrochemical oxidation of sulphite ions at graphite electrodes

On etudie la thermodynamique d'absorption de SO 2 dans des solutions aqueuses de sulfate de sodium et d'acide sulfurique. On analyse les effets de la temperature, de la pression d'effluent gazeux et de la quantite de sulfate introduite sur le pH et la dissociation de SO 2

Thermodynamic equilibrium of diluted sulfur dioxide absorption into disodium sulfate or sulfuric acid electrolyte solutions

Electrochemical scrubbing of SO2-containing gas: Coupling absorption to electrochemical reaction

Thermodynamic equilibrium of diluted sulfur dioxide absorption into disodium sulfate or sulfuric acid electrolyte solutions [Erratum to document cited in CA113(16):139744r]

T. Hunger

Papers

Electrochemical oxidation of sulphite ions at graphite electrodes

Thermodynamic equilibrium of diluted sulfur dioxide absorption into disodium sulfate or sulfuric acid electrolyte solutions

Electrochemical scrubbing of SO2-containing gas: Coupling absorption to electrochemical reaction

Thermodynamic equilibrium of diluted sulfur dioxide absorption into disodium sulfate or sulfuric acid electrolyte solutions [Erratum to document cited in CA113(16):139744r]