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Number of results

Journal

2013 | 11 | 1 | 101-110

Article title

Effect of solution pH on the stability of mixed silica -alumina suspension in the presence of polyacrylic acid (PAA) with different molecular weights

Content

Title variants

Languages of publication

EN

Abstracts

EN
The influence of solution pH (in the range 3–9) on mixed silica-alumina suspension in the absence and presence of polyacrylic acid (PAA) was studied. The composition of the adsorbent was SiO2 (97%) and Al2O3 (3%). The turbidimetry method was applied to record changes in the stability of the investigated systems as a function of time. It was shown that the suspension without the polymer is less stable at pH 3, whereas at pH 6 and 9, the systems were stable. PAA with molecular weights 100 000 and 240 000 at pH 3 (improvement of system stability conditions) and PAA 2 000 at pH 6 (deterioration of suspension stability) have a great effect on the silica-alumina suspension stability. The stabilization-flocculation properties of polyacrylic acid are a result of a specific conformation of its chains on the solid surface where it depends on the solution pH and the polymer molecular weight.

Publisher

Journal

Year

Volume

11

Issue

1

Pages

101-110

Physical description

Dates

published
1 - 1 - 2013
online
24 - 10 - 2012

Contributors

  • Maria Curie Skłodowska University
  • Maria Curie Skłodowska University
  • Maria Curie Skłodowska University
author
  • Maria Curie Skłodowska University
  • National Academy of Sciences of Ukraine
  • National Academy of Sciences of Ukraine

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11532-012-0136-9
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