HWAHAK KONGHAK, Vol.5, No.2, 123-134, June, 1967
SiO2로서 응결효과에 관한 연구
The Effect of Coagulation by SiO2
Generally, SiO2 were disliked in natural water suspension solutions and various methods of its exclusion have been investigated in industrial fields.
In colloid science, SiO2 of the nascent state in water solution is well known as a hydrophilic inorganic sol, and also has negative charge in weak acid, neutral solution and alkali solution. Clay and arsenic trisulfide particles in water solution have the properties of negative charge and hydrophobic sol. In the above cases, the suspension expects to appear phenomena of the sensitization with mutual action according to control the concentration of hydrophilic sol on hydrophobic sol in the disperse system.
In the experiment, it was investigated that the effect of coagulation by this sensitization of As2S3 and clay with SiO2 were calculated by using C060 radioactive isotope method, and moreover, in its coagulation state observed by electromicroscope.
The coagulation effects of the sensitization of SiO2 sol against clay suspension were much weaker than the electrolytes in industrial water or natural water comparing the action of coagulation of electrolyte （Al2(SO4）3) with non-electrolyte (SiO2), and the effect of coagulation by SiO2 concluded in this research to be caused by only van der Waals’forces and not Coulomb's forces.
In colloid science, SiO2 of the nascent state in water solution is well known as a hydrophilic inorganic sol, and also has negative charge in weak acid, neutral solution and alkali solution. Clay and arsenic trisulfide particles in water solution have the properties of negative charge and hydrophobic sol. In the above cases, the suspension expects to appear phenomena of the sensitization with mutual action according to control the concentration of hydrophilic sol on hydrophobic sol in the disperse system.
In the experiment, it was investigated that the effect of coagulation by this sensitization of As2S3 and clay with SiO2 were calculated by using C060 radioactive isotope method, and moreover, in its coagulation state observed by electromicroscope.
The coagulation effects of the sensitization of SiO2 sol against clay suspension were much weaker than the electrolytes in industrial water or natural water comparing the action of coagulation of electrolyte （Al2(SO4）3) with non-electrolyte (SiO2), and the effect of coagulation by SiO2 concluded in this research to be caused by only van der Waals’forces and not Coulomb's forces.