Process for treating aqueous solutions containing phenols
AssigneeKoei Chemical Company, Limited
InventorsSinichi Yasuda, Takayuki Kurohara, Akira Taguro
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Abstract
In removing a phenol from an aqueous solution containing the phenol, the phenol could be extracted quite effectively regardless of concentration of the phenol by using, as extracting solvent, a nitrogen-containing heterocyclic compound having a total carbon number of 9 or more either alone or in the state of a dilution with a water-insoluble organic solvent.
Claims11
A process for treating an aqueous solution containing at least one phenol selected from the group consisting of phenol, cresols, xylenols, catechols, chlorophenols and nitrophenols, characterized by removing said phenol from said aqueous solution by extraction using an extracting solvent comprising a nitrogen-containing heterocyclic compound having a total carbon number of 9 or more, selected from the group consisting of a compound having the skeletal structure of pyridine, a compound having the skeletal structure of piperidine and a compound having the skeletal structure of triazine.
Dependencies are inferred from the claim text.