Experimental study of the aqueous phase reaction of hydrogen sulfide with MEA-triazine using in situ Raman spectroscopy

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Abstrakt

A method for quantitation of bisulfide in the aqueous phase reactions of H2S scavenging with MEA-triazine is proposed. The method is based on time-resolved in situ Raman spectroscopy, thus allowing in situ monitoring of the reactions. The method is applied to obtain the kinetic data of the reactions in batch configuration at room temperature for initial pH values of 9, 10, and 11 and MEA-triazine/bisulfide initial concentration ratios in the range of 0.5-10. The pH increases remarkably during the reactions, causing a substantial decrease in the rate of disappearance of bisulfide. If the system is reacidified, complete depletion of bisulfide can be achieved, evidencing the irreversibility of the scavenging reactions. The results are also supported by a qualitative analysis of the trends of the characteristic Raman peaks of MEA-triazine, dithiazine, and monoethanolamine. These trends are in line with the currently accepted reaction scheme, consisting of two scavenging reactions in series.

OriginalsprogEngelsk
TidsskriftIndustrial & Engineering Chemistry Research
Vol/bind60
Udgave nummer43
Sider (fra-til)15549-15557
Antal sider9
ISSN0888-5885
DOI
StatusUdgivet - 2021

Fingeraftryk

Dyk ned i forskningsemnerne om 'Experimental study of the aqueous phase reaction of hydrogen sulfide with MEA-triazine using in situ Raman spectroscopy'. Sammen danner de et unikt fingeraftryk.

Citationsformater