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Anthraquinone is an important dye intermediate and is known also as a digest-aid chemical in pulp manufacturing since 20 years ago.Recent studies revealed, furthermore, that anthraquinone inhibited sulfate respiration of sulfate-reducing bacteria in the sludge of wastewater so that evolution of hydrogen sulfide was effectively diminished. Follow up fieldworks are under way.Here are presented two field-test results, one obtained at a force main line of the Wastewater Treatment Plant for the City of Tampa, Florida, and another obtained at an underground reservoir or a pit of a building in the city of Tokyo.The anthraquinone formulation is expected to make an excellent means of diminishing foul sulfurous odor and preventing sulfuric corrosion at public sewage systems, pulp and paper mills, fermentation and food-processing plants, dyehouses and oil fields.

A Quinone Formulation which Inhibits Evolution of Hydrogen Sulfide Because of Sulfate Reducing Bacteria.