H2S removal with an immobilized cell hybrid reactor

Hydrogen sulfide removal by a novel fixed-film bioscrubber system

“…These processes have high operating costs and also produce chemical waste by-products that must be disposed of before discharge. Recently, the chemobiological processes are used for the gas treatment [3,4]. However, these processes still use the chemical reagent and have acidic condition for the oxidation reaction which has some cost of the operation.…”

Use of sulfur‐oxidizing bacteria as recognition elements in hydrogen sulfide biosensing system

“…According to other related studies, an acceptable performance for these two species was expected. A. thiooxidans and A. ferrooxidans indicated high efficiency (about 90%) in H 2 S removal biosystems . In a similar study, the abilities of H 2 S oxidation of these two species were compared and no differences in oxidation efficiency between these two species were detected .…”

“…Hydrogen sulfide is a colorless, flammable, and extremely toxic gas to living organisms . It is one of the most important gases in the nature, which is produced by anaerobic sulfur‐reducing bacteria or in the industrial processes as a by‐product .…”

Hydrogen Sulfide Removal From Petroleum Refinery by ImmobilizedThiobacillus ferrooxidansin Fixed-bed Bioreactor

“…It can be seen that in batch cultivations, the maximum Fe 2C oxidization rate of free cells was 0.692 g [Fe 2C ]/(L.h) while that of immobilized cells was 7.145 g [Fe 2C ]/(L.h). In the packed bed type, immobilized T.f was packed into the reactor in the supporting medium and the cell concentration within the reactor was increased (Son and Lee, 2005).The significant increase of the Fe 2C oxidization rate in immobilized cells was due to the increase of living cell density after immobilization.…”

“…At present, some examples of these methods in the case of the removal of H 2 S gas are physical-chemical treatment, cleaning, adsorption on particle surfaces, and absorption by liquid solvents. However, various problems exist with the catalysts used in these processes, including the cost of renewing the inactivated catalysts, the generation of secondary substances causing pollution, and the high-energy requirement (Halfmeier et al, 1993a;Son and Lee, 2005).…”