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Effect of solution pH on the stability of mixed silica -alumina suspension in the presence of polyacrylic acid (PAA) with different molecular weights
Central European Journal of Chemistry
© Versita Sp. z o.o. 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 SiO 2 (97%) and Al 2 O 3 (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 withdoi:10.2478/s11532-012-0136-9 fatcat:xl2acop5a5c4bknoi2tlk5bxu4