Abstract
A study was carried out in an effort to find an effective means of treating tetraethyl lead manufacturing process waste waters. The conventional method of coagulation was effective for the removal of inorganic lead compounds in the tetraethyl lead process streams whereas the organic lead compounds present in the waste waters were not amenable to coagulation. Of the various waste waters arising from the tetraethyl lead manufacturing process, those waste waters which are rich in organic lead compounds were passed through a macroreticular sulfonate type strongly acidic cation exchange resin and the exhausted resin was eluted by caustic soda to give eluate containing high concentrations of organic lead compounds. The ion exchange resin was used repeatedly in this way. The organic lead thus concentrated was converted to inorganic lead by the addition of chlorine gas. When the eluate thus enriched in inorganic lead is added to the process streams carrying chiefly inorganic lead and coagulation is carried out, an almost complete elimination of lead in the tetraethyl lead process discharges will be obtained.
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