Reversal of bubble charge in multivalent inorganic salt solutions-effect of lanthanum
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چکیده
It was discovered recently that the charge of gas bubbles in aqueous solution can be reduced and even reversed by the addition of multivalent inorganic saltsIn this work. the effect of LaCI3 on the charge of bubbles was investigated and found to have an effect similar to that previously observed with AICI3 and MgC12The electrokinetic behavior of gas bubbles was affected slightly by LaCI3 additions at low concentrations but changed markedly at high concentration (I x 10-3 mol dm3) of LaC13A reversal of bubble charge was observed and this is attributed to the specific adsorption of La3 + in the lower pH region and to the formation of La(OH)3(s) precipitate at the gas-liquid interface in the
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