adsorption of SDS; carbons; zeta potentialů

A surface of the six different carbonaceous materials was modified by SDS (sodium dodecyl sulphate). Changes on the surface were examined by the zeta potential technique. We followed relationship between composition (namely amount of oxygen) of carbonaceous materials and changes of the zeta potential. The influence of pH on zeta potential was fitted. Critical micelle concentration of SDS was determined by conductivity measurement. Adsorption of SDS on bituminous coal can be described by Langmuir adsorption theory below critical micelle concentration of SDS.

A surface of the six different carbonaceous materials was modified by SDS (sodium dodecyl sulphate). Changes on the surface were examined by the zeta potential technique. We followed relationship between composition (namely amount of oxygen) of carbonaceous materials and changes of the zeta potential. The influence of pH on zeta potential was fitted. Critical micelle concentration of SDS was determined by conductivity measurement. Adsorption of SDS on bituminous coal can be described by Langmuir adsorption theory below critical micelle concentration of SDS.