• design and optimization dissolved nitrogen predispersed solvent extraction method and comparison of its performance with predispersed solvent extraction method

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1389/07/20
    • تاریخ انتشار در تی پی بین: 1389/07/20
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     the difference between dissolved nitrogen predispersed solvent extraction (dnpdse) innovative method and predispersed solvent extraction (pdse) method is in increased instruments on the apparatus for using features (increased contact area, more dispersion capability and enhanced buoyancy force) due to conversion of colloidal liquid aphrons (clas) to colloidal gas aphrons (cgas).the studies conducted after design and optimization of working conditions for the apparatus (2.5 - 3.5 bar pressure, 0.1 l/min sparger air flow and 1.5 l aqueous phase volume), showed that for all conditions of the survey, the recoveris in dnpdse method was higher than pdse method. in addition, obtained pictures of the two methods performance mode indicated presence of cgas in dnpdse method compared with polyaphron aggregations in pdse method that being a good reason for increased recovery in dnpdse method. most recovery in this method is achieved by using anionic polyaphron nadbs with fivefold dilution in 3.5 bar pressure.

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