Sulfite Ion (SO₃²⁻) - Chemistry LibreTexts
2023年8月29日 · Sulfite ion is readily oxidized to sulfate. On prolonged exposure to air, this oxidation occurs with atmospheric oxygen: \[\ce{2SO3^{2-}(aq) + O2(g) -> 2SO4^{2-}(aq)} \nonumber \]
Roles, mechanism of action, and potential applications of sulfur ...
2022年12月15日 · The formation of these compounds is catalyzed by enzymes located in the periplasm or cytoplasm. The critical enzyme-mediated sulfite oxidation pathways are described further. The three sulfite oxidation pathways (SO 3 2− to SO 4 2− in SOB) include three paths.
Microbial oxidation of sulfur - Wikipedia
Reactions of oxidation of sulfide to sulfate and elemental sulfur (incorrectly balanced). The electrons (e −) liberated from these oxidation reactions, which release chemical energy, are then used to fix carbon into organic molecules.
Enzymology and molecular biology of prokaryotic sulfite oxidation
2001年9月11日 · In many pro- and also eukaryotes sulfite is formed as a degradative product from molecules containing sulfur as a heteroatom. In these organisms detoxification of sulfite is generally achieved by direct oxidation to sulfate.
Mechanisms of sulfite oxidation in sulfite-nitrite mixed solutions
2019年3月1日 · This study was focused on the sulfite-sulfate oxidation mechanisms in the nitrite-sulfite mixed solutions. Results showed that the oxidation rate of sulfite was first order with respect to the sulfite or oxygen concentration in the sulfite solution, while the oxidation rate of sulfite was accelerated in the nitrite-sulfite mixed solutions.
A quantum-mechanical study of the reaction mechanism of sulfite …
2014年6月24日 · In this study, we focus on the mechanism of sulfite oxidases , which detoxifies sulfite by oxidizing it to sulfate . This reaction is the terminal step in the biological sulfur cycle in many organisms, including man.
Diversity and ecology of microbial sulfur metabolism
2024年10月17日 · A cycling process where a tight link between sulfate reduction and sulfide oxidation enables a rapid sulfide turnover, ensuring the sulfide concentration remains below detectable levels.
(PDF) Sulfite Oxidation: The State-of-the-Art of the Problem
1997年5月1日 · This review is devoted to the analysis of the kinetics of S(IV) (sulfite and bisulfite ions) oxidation by molecular oxygen, ozone, hydrogen peroxide, and peroxymonosulfate in aqueous...
Oxidation of Reduced Inorganic Sulfur Compounds by Bacteria: …
Biological oxidation of hydrogen sulfide to sulfate is one of the major reactions of the global sulfur cycle. Reduced inorganic sulfur compounds (referred to below as sulfur) are exclusively oxidized by prokaryotes, and sulfate is the major oxidation product.
Mechanisms of sulfite oxidation in sulfite-nitrite mixed solutions
2019年3月1日 · This study was focused on the sulfite-sulfate oxidation mechanisms in the nitrite-sulfite mixed solutions. Results showed that the oxidation rate of sulfite was first order with respect to the sulfite or oxygen concentration in the sulfite solution, while the oxidation rate of sulfite was accelerated in the nitrite-sulfite mixed solutions.