Flow-through yittria stabilized ph sensing electrode for chemistry monitoring in scwo environments

Xiangyang Zhou, S. M. Ulyanov, S. N. Lvov, H. L. Barnes

Research output: Contribution to journalConference articlepeer-review

Abstract

A recently developed flow-through, yittria-stabilized zirconia (YSZ) pH sensor is presented. The Nernstian behavior and precision of the YSZ sensor was evaluated by comparing the potentials between the YSZ sensor and a Pt(H2) electrode. The results shows that this design is viable for pH measurements to an accuracy of about ±0.05 pH units, or about a factor of 2-10 better than it is normally achieved at temperatures above 300°C. A by-pass electrochemical system for on-line pH monitoring in industrial systems was designed. The system allows to in situ calibrate the pH sensors using the reference solutions and provide real-time monitoring of the pH of industrial hydrothermal fluids.

Original languageEnglish (US)
JournalNACE - International Corrosion Conference Series
Volume2001-March
StatePublished - Jan 1 2001
Externally publishedYes
EventCorrosion 2001 - Houston, United States
Duration: Mar 11 2001Mar 16 2001

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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