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Jarosite [KFe3(SO4)2(OH)6] is considered a potent scavenger for arsenic (As) and antimony (Sb) under oxidizing conditions. Fluctuations in water levels in re-flooded acid sulfate soils (ASS) can lead to high Fe2+(aq) concentrations (∼10–20 mM) in the soil solution under acidic to circumneutral pH conditions. This may create favorable conditions for the Fe2+-induced transformation of jarosite. In this...
This study examined the reaction mechanism of arsenite, As(III), and antimonite, Sb(III), with iron sulfide and compared their pH-dependent reaction behaviors under strictly anoxic environments. The comparison of Sb(III) with As(III), based on their chemical similarity, may provide useful insight into understanding the geochemical behavior of the less studied Sb(III). The pH-dependent batch sorption...
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