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Spectrophotometric in-line monitoring of the electrochemical production of polysulfides using an ATR-probe
KTH, Superseded Departments, Chemical Engineering and Technology.
KTH, Superseded Departments, Chemical Engineering and Technology.
KTH, Superseded Departments, Chemical Engineering and Technology.ORCID iD: 0000-0002-9392-9059
1998 (English)In: Process control and quality, ISSN 0924-3089, E-ISSN 1568-5667, Vol. 11, no 2, 153-159 p.Article in journal (Refereed) Published
Abstract [en]

With an ATR-probe For the UV-vis range it is possible to apply spectrophotometry to very concentrated process liquors without dilution. In this paper the application of a new ATR-probe to the monitoring of sulfur species during an electrochemical process for production of polysulfides is presented. In this system, the temperature and the total salt concentration are relatively constant. A linear relation exists between the ATR-probe response and the concentration of adsorbing species. Therefore, the process can be followed by simple monitoring of a few wavelengths. The ATR-probe was easily implemented and showed no signs of deterioration in the hot strongly alkaline medium. Temperature has a significant effect on measurement with ATR-probes. Other factors that might also affect the measurements using an ATR-probe an briefly discussed.

Place, publisher, year, edition, pages
1998. Vol. 11, no 2, 153-159 p.
Keyword [en]
sulfide, polysulfide excess sulfur, ATR-probe, UV-vis, in-line, process monitoring, electrochemical oxidation, SODIUM-HYDROXIDE, LIQUOR, CELL
Identifiers
URN: urn:nbn:se:kth:diva-12873ISI: 000076338000007OAI: oai:DiVA.org:kth-12873DiVA: diva2:319495
Note
QC 20100518Available from: 2010-05-18 Created: 2010-05-18 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Electrochemical generation of polysulfide liquor and sodium hydroxide from white liquor
Open this publication in new window or tab >>Electrochemical generation of polysulfide liquor and sodium hydroxide from white liquor
1998 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 1998. 73 p.
Series
Trita-KET, ISSN 1104-3466 ; 80
Keyword
White liquor, Kraft pulping, Polysulfides, Sodium hydroxide, Electrolysis, Autocatalysis, Cation-selective membranes, DSA, Nickel, Graphite
National Category
Inorganic Chemistry
Identifiers
urn:nbn:se:kth:diva-2613 (URN)99-2513020-4 (ISBN)
Public defence
1998-02-20, 00:00 (English)
Note
QC 20100518Available from: 2000-01-01 Created: 2000-01-01 Last updated: 2010-05-18Bibliographically approved

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