Treatment of complex sulfur-containing solutions in ammonia desulfurization ammonium sulfate production by ultrasonic-assisted ozone technology.

ABSTRACT: In this work, the cause of abnormal color in ammonium sulfate products formed by flue gas desulfurization is revealed by investigating the conversion relationship between different sulfur-containing ions and their behavior in a sulfuric acid medium. Both thiosulfate (S₂O₃^2-) and sulfite (SO₃^2- ＆ HSO₃^-) impurities affect the quality of ammonium sulfate. The S₂O₃^2- is the main reason for the yellowing of the product due to the formation of sulfur impurities in concentrated sulfuric acid. To address the yellowing of ammonium sulfate products, a unified technology (US/O₃), using ozone (O₃) and ultrasonic waves (US) simultaneously, is exploited to remove both thios

SUBMITTER: Wang T 

PROVIDER: S-EPMC10457592 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature