Investigation into the effect of phosphonate inhibitors on barium sulfate precipitation

Investigation into the effect of phosphonate inhibitors on barium sulfate precipitation

The effect of a series of phosphonate molecules on barium sulfate precipitation was tested. While an increase in the number of phosphonate groups generally resulted in increased inhibition of barium sulfate precipitation, two notable exceptions showed that a relatively high number of phosphonate gro...

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Bibliographic Details
Main Authors: Jones, Franca, Oliveira, Allan, Rohl, Andrew, Parkinson, Gordon, Ogden, Mark, Reyhani, Manijeh
Format: Journal Article
Published: Elsevier Science 2002
Subjects:
crystal growth
barite
Online Access:http://hdl.handle.net/20.500.11937/31952
Description
Summary:The effect of a series of phosphonate molecules on barium sulfate precipitation was tested. While an increase in the number of phosphonate groups generally resulted in increased inhibition of barium sulfate precipitation, two notable exceptions showed that a relatively high number of phosphonate groups does not guarantee inhibition while a relatively low number of phosphonate groups does not imply no inhibition. Increasing the pH showed an increased effect of additives on barium sulfate precipitation up to pH 8. However, on increasing from pH 8 to 12, a loss of inhibition in the additives was observed which appears to be due to the barium sulfate surface changing with pH.

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