Electrolytic flotation

It can be seen that normally water produces fine hydrogen bubbles at a cathode and fine oxygen bubbles at an anode. In the presence of excessive electrolytes, other types of gaseous bubbles may also be produced from the electroflotation system depending upon the types and concentrations of electrolytes in the water. This is the reason why electroflotation may give either unexpected good results or unexpected bad results (120,121). 

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Lacy-Keller A process for removing hydrogen sulfide and mercaptans from natural gas by absorption in a proprietary solution. Elemental sulfur precipitates as a colloid and is separated from the solution by means of an electrolytic flotation cell. The process does not remove carbon dioxide. 

Electrolytic flotation (or electroflotation) Example Sacrificing electrode system... 

Again, any type of technique can be used for generating gas bubbles in a nonfoaming adsorptive bubble separation system. The most effective bubble generation techniques for a nonfoaming system are dissolved air flotation and electrolytic flotation. The following are the process descriptions of selected nonfoaming processes. 

Unlike flocculation, flotation does not require any additional chemicals. Air or gas bubbles are pumped into the algae culture. Bubbles collapse near algal cells, and then get attached to the cells. As a result, the density of algal cells is reduced and they float. This method can capture particles with a diameter of less than 500 pm. There are three major flotation techniques based on the bubble size, namely dissolved air flotation, dispersed air flotation and electrolytic flotation. 

In electrolytic flotation (electroflotation), hydrogen and oxygen gas bubbles are generated by electrolysis. The bubbles produced can be smaller than 30 microns. Instead of the saturator, an expensive rectifier system is required. The flotation unit is very similar to the dissolved air unit, and in fact the same... 

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