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Viscosity changes during the slow coagulation of ferric hydroxide sol and the verification of the new equation, connecting the electrolyte concentration and time of coagulation

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Summary

The viscosity changes with time during the slow coagulation of ferric hydroxide sol was studied in presence of potassium chloride, potassium nitrate, sodium acetate, potassium oxalate and potassium phosphate as electrolytes. The points of inflection in the autocatalytic viscosity-time curves were taken to denote the same kinetic stage of coagulation (d 2 x/dt 2=0) brought about by adding different concentrations of the electrolyte. The reciprocal of the times corresponding to the inflection points were plotted against the respective concentrations of the electrolyte used. Straight lines were obtained in all cases showing the validity of the equation,C=a+m/n · 1/t, which is a particular case of the new Equation,C=a+m·1/t/n+1/t.

Zusammenfassung

Die zeitliche Änderung der ViskositÄt wÄhrend der langsamen Koagulation von Eisenhydroxydsol wurde bei Anwesenheit von Kaliumchlorid, Kaliumnitrat, Natriumazetat, Kaliumoxalat und Kaliumphosphat, welche als Elektrolyte dienten, untersucht. Die Influxionspunkte in den autokatalytischen ViskositÄts-Zeitkurven wurden verwendet, um denselben kinetischen Koagulationszustandd 2 x/dt 2=0) zu kennzeichnen, welcher durch Hinzufügen verschiedener Elektrolytkonzentrationen hervorgerufen wurde.

Die reziproken Zeitwerte dieser Knickpunkte wurden gegen die entsprechende Konzentration des verwendeten Elektrolyts aufgetragen. Es wurden in allen FÄllen Gerade erhalten welche die Gültigkeit der GleichungC=a+m/n·1/t beweisen. Die Gleichung ist ein Spezialfall der GleichungC=a+(m/n+1/t)· 1/t.

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References

  1. Bhattacharya and Bhattacharya, Kolloid-Z.141, 95 (1955).

    Article  CAS  Google Scholar 

  2. Troelstra and Kruyt, Kolloid-Beih.54, 225 (1943).

    CAS  Google Scholar 

  3. Gann, Kolloidchem. Beih.8, 64 (1916).

    Google Scholar 

  4. Oden, Kolloid-Z.26, 160 (1920); Ark. f. Kemi, Mineral och. Geol.1920, 7, No. 26.

    Google Scholar 

  5. Kruyt, Colloid Science, Vol. I, p. 77 (Amsterdam 1952).

    Google Scholar 

  6. Bhattacharya and Kumar, J. Ind. Chem. Soc.29, 759 (1952).

    Google Scholar 

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Bhattacharya, A.K. Viscosity changes during the slow coagulation of ferric hydroxide sol and the verification of the new equation, connecting the electrolyte concentration and time of coagulation. Kolloid-Zeitschrift 148, 136–140 (1956). https://doi.org/10.1007/BF01502833

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  • DOI: https://doi.org/10.1007/BF01502833

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