Sulfides oxygenation

Microsensors have been used to develop profiles in mixed species biofilms. Figure 10 shows concentration profiles of sulfide, oxygen, and pH in a biofilm accumulated on the surface of a mild steel corrosion coupon. The concentration of sulfide is highest near the metal surface, where iron sulfide forms quickly and covers the steel surface if both ferrous and sulfide ions are available. At low ferrous ion concentrations, adherent and temporarily protective films of iron sulfides are formed on the steel surface, with a consequent reduction in corrosion rate. High rates of SRB-induced corrosion of mild steel are maintained only in high concentrations of ferrous ion. 

Figure 10. Concentration profiles of sulfide, oxygen, and pH in abiofilm on mild steel. (Reprinted from Ref 19 with permission of Harwood Academic Publishers, Laousanne, Switzerland.)...

Martin W, Rotte C, Hoffmeister M, Theissen U, Gelius-Dietrich G, Ahr S, Henze (2003) Early cell evolution, eukaryotes, anoxia, sulfide, oxygen, fungi first ( ), and a tree of genomes revisited. IUBMB Life 55 193-204... 

Metal sulfide Oxygen Metal Sulfur dioxide... 

A binary compound is formed of only two elements. A typical binary compound is table salt (NaCl). The naming strategy for binary compounds is to write the name of the first element, add part of the name of the second element, and end with -ide. The part of the name of the second element used is best illustrated by examples. If the second element is chlorine, change it to chloride. If the second element is sulfur, change it to sulfide. Oxygen is oxide, fluorine is fluoride, and so on (Table 2.1). 

Figure 10 Vertical profiles of methylation rates (al, a2) and sulfide/oxygen concentrations (bl, hi) in the sediments of sandy (1) and muddy (2) sites in a salt marsh (Barn Island, Connecticut, USA). Maximum methylation occurs in the top 2 cm of these sediments and is coincident with the redox transition zone. Note also that the rates are an order of magnitude faster in the sandy sediments (source Langer et al., 2001).

Keywords Sepiolite, Molybdenum Sulfide Oxygen Chemisorption, Hydordesulfurization, Hydrogenation... 

FIGURE 11.17 Profiles of hydrogen sulfide, oxygen, and pH in periphyton mats and sediments. (Redrawn from Jorgensen, 1983.)... 

Watzl, M., Munster, A.F. Turing-like spatial patterns in a polyacrylamidemethylene blue-sulfide-oxygen system. Chem. Phys. Lett. 242, 273 (1995)... 

Hydrocarbons, Short-chain — 90 32 E E ethylene methane, acetylene, ethane, propylene, propane, some butane and higher h drocarbons hydrogen, carbon monoxide, carbon dioxide, hydrogen sulfide oxygen, nitrogen, water, heating oil, moderate aeration... 

McClenaghan ND, Menage S. Photocatalyzed sulfide oxygenation with water as the unique oxygen atom source. Inorg Chem. 2012 51 2222-2230. 

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