Reduction of vanadium(V) with Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

Vanadium: Global (bio)geochemistry

“…Aluminum and titanium oxide surfaces have been shown to catalyze V(IV) oxidation (Wang and Sañudo Wilhelmy, 2009b;Wehrli and Stumm, 1988;Wehrli and Stumm, 1989), and complexation with organic molecules may serve to inhibit oxidation. 1972;Bredberg et al, 2004;Carpentier et al, 2003;Li et al, 2009;Wanty and Goldhaber, 1992).…”

Bioleaching of spent hydro-processing catalyst using acidophilic bacteria and its kinetics aspect

“…Such bacteria can thrive on low pH and tolerate harsh conditions that exist in concentrated metal solutions. In addition, A. thiooxidans and A. ferrooxidans have been previously reported to reduce vanadium (V) to vanadium (IV) in the presence of elemental sulphur [13,23].…”

“…These bacteria utilize elemental sulfur (S 0 ) and Fe 2+ ions for growth and produce sulfuric acid as a key metabolite. When grown on elemental sulfur, Acidithiobacilli produce several intermediate sulfur species with high reducing power including thiosulfate and sulfite [22,23]. The sulfite so formed can be oxidized by oxygen action catalyzed by bacteria.…”

Customized design of electronic noses placed on top of air-lift bioreactors for in situ monitoring the off-gas patterns

“…In the present case the studied system is an air-lift bioreactor inoculated with Acidithiobacillus thioxidans (AT), a chemolithotrophic bacteria used for biotechnological leaching and heavy metal bioremediation [27,28]. AT biofilms can easily grow on a bed of tiny bits of elemental sulfur in air-lift bioreactors.…”