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Removal of n-butyl mercaptan using stripping with an inert gas: A nonequilibrium approach via mass balances

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dc.contributor.author Matsis, V en
dc.contributor.author Georgantas, D en
dc.contributor.author Grigoropoulou, H en
dc.date.accessioned 2014-03-01T01:25:04Z
dc.date.available 2014-03-01T01:25:04Z
dc.date.issued 2006 en
dc.identifier.issn 0888-5885 en
dc.identifier.uri http://hdl.handle.net/123456789/17530
dc.subject Mass Balance en
dc.subject.classification Engineering, Chemical en
dc.subject.other Alkalinity en
dc.subject.other Concentration (process) en
dc.subject.other Inert gases en
dc.subject.other Nitrogen en
dc.subject.other pH effects en
dc.subject.other Solutions en
dc.subject.other Chemical equilibrium en
dc.subject.other Gas stripping en
dc.subject.other Mass balance en
dc.subject.other n-butyl mercaptan en
dc.subject.other Removal en
dc.subject.other Alkalinity en
dc.subject.other Concentration (process) en
dc.subject.other Inert gases en
dc.subject.other Nitrogen en
dc.subject.other pH effects en
dc.subject.other Removal en
dc.subject.other Solutions en
dc.title Removal of n-butyl mercaptan using stripping with an inert gas: A nonequilibrium approach via mass balances en
heal.type journalArticle en
heal.identifier.primary 10.1021/ie050882g en
heal.identifier.secondary http://dx.doi.org/10.1021/ie050882g en
heal.language English en
heal.publicationDate 2006 en
heal.abstract The stripping of n-butyl mercaptan (RSH) from neutral and alkaline aqueous solution with gaseous nitrogen is investigated at ambient temperature and pressure in a semibatch system. A model considering the dynamic state, the thiol mass balance, the effect of RSH dissociation, and the deviation from chemical equilibrium is developed and solved numerically. The assumption of chemical equilibrium between undissociated thiol and its ion (RS-) is valid at neutral pH, but at alkaline conditions, RS- → RSH is the rate controlling step, with k = 5 × 10-6 s-1 at 301 K and pH 11.7. The effectiveness of inert gas stripping is mainly governed by thiol's hydrophobic nature and its neutral/ionic form speciation. At pH values below 8.5, thiol concentration falls in an exponential form, whereas at pH values above 10.5, it tends toward a linear form. The mass balance model is extremely sensitive to uncertainty in γ∞, whereas k governs thiol emission rate out of the liquid system. © 2006 American Chemical Society. en
heal.publisher AMER CHEMICAL SOC en
heal.journalName Industrial and Engineering Chemistry Research en
dc.identifier.doi 10.1021/ie050882g en
dc.identifier.isi ISI:000235699800023 en
dc.identifier.volume 45 en
dc.identifier.issue 5 en
dc.identifier.spage 1766 en
dc.identifier.epage 1773 en


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