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dc.contributor.authorJones, Franca
dc.contributor.authorStanley, A.
dc.contributor.authorOliveira, Allan
dc.contributor.authorRohl, Andrew
dc.contributor.authorReyhani, Manijeh
dc.contributor.authorParkinson, Gordon
dc.contributor.authorOgden, Mark
dc.identifier.citationJones, Franca and Stanley, Andrew and Oliveira, Allan and Rohl, Andrew L. and Reyhani, Manijeh M. and Parkinson, Gordon M. and Ogden, Mark I.. 2003. The role of phosphonate speciation on the inhibition of barium sulfate precipitation . Journal of Crystal Growth 249 (3): 584-593.

The inhibition of barium sulfate precipitation in the presence of phosphonate containing molecules was investigated experimentally and speciation curves were used to elucidate the interactions involved. Inhibition of precipitation was found to be pH dependent and loss of inhibition was observed at both very high and low pHs. Maximum inhibition for all the inhibitor molecules occurred at pH 8. While speciation curves showed that inhibition could be improved by the presence of 2 or more fully de-protonated phosphonate groups (for pure aminophosphonates) on the molecule at pH 8, at pH 12 inhibition was insensitive to the number of de- protonated phosphonate groups. It is, therefore, suggested that surface charge repulsion affects inhibition at very high pH. For molecules which are not pure aminophosphonates, stereochemistry as well as functional groups and their ionisation state appear to play a significant role in inhibition at 3<pH8.

dc.publisherElsevier Science
dc.subjectcrystal growth
dc.subjectbarium sulfate
dc.titleThe role of phosphonate speciation on the inhibition of barium sulfate precipitation
dc.typeJournal Article
dcterms.source.titleJournal of Crystal Growth
curtin.departmentNanochemistry Research Institute
curtin.accessStatusOpen access
curtin.facultyResearch Centres
curtin.facultyCooperative Research Centres
curtin.facultyA.J. Parker CRC for Hydrometallurgy
curtin.facultyDivision of Engineering, Science and Computing
curtin.facultyDepartment of Applied Chemistry
curtin.facultyNanochemistry Research Centre
curtin.facultyFaculty of Science

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