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Kinetics of absorption of hydrogen sulfide into aqueous ferric sulfate solutions
Author(s) -
Asai Satoru,
Konishi Yasuhiro,
Yabu Tadahiro
Publication year - 1990
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690360906
Subject(s) - aqueous solution , chemistry , absorption (acoustics) , inorganic chemistry , ionic strength , ferric , sulfate , hydrogen sulfide , kinetics , reaction rate constant , sulfide , organic chemistry , materials science , sulfur , physics , quantum mechanics , composite material
Absorption experiments of H 2 S into aqueous Fe 2 (SO 4 ) 3 solutions, concerned with a unique process capable of regenerating by biological oxidation the reactant from the products, were performed at 20–40°C in an agitated vessel with a flat interface. The absorbents were aqueous solutions of Fe 2 (SO 4 ) 3 with and without the addition of K 2 SO 4 , KOH or H 2 SO 4 of various concentrations, which was added to change the ionic strength or pH of the solutions. The experimental results revealed that the species which reacts with H 2 S is FeOH 2+ . While comparing the observed absorption rates with the theoretical predictions, it was found that the reaction is irreversible and first order with respect to H 2 S and FeOH 2+ . The reaction rate constants were measured and correlated.