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The ability of two organic solvents (1‐methyl‐2‐pyrrolidinone and tri‐ n ‐butyl phosphate) to remove SO 2 from utility and industrial waste gases to an environmentally acceptable level was studied. Infinite dilution activity coefficients of SO 2 for the systems were obtained by gas‐liquid chromatography. From these coefficients, the solubility data of SO 2 were derived via a single‐parameter form of the Wilson equation in conjunction with regular solution theory. The results were quite comparable to data obtained from a classical bubble‐sparger apparatus.
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Sanza et al. (1984) studied this question.
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