Removal of Hydrogen Sulfide by Hyphomicrobium neptunium ATCC 15444

Abstract

Hydrogen sulfide (H₂S) was efficiently removed from air by Hyphomicrobium neptunium ATCC 15444. When the loading of H₂S was less than 68.3 mmol of H₂S per liter-culture per day, the H₂S was completely removed. At this point, the inlet maximum concentration of H₂S was 850 ppm. This H₂S removal effect was strongly dependent on the pH of the medium and the existence of Mg²⁺, Ca²⁺ in the medium which were growth factors of H. neptunium ATCC 15444.