Treatment of industrial phenol-containing wastewater with solid extractants depending on the acidity of themedium
The problem of pollution of open water by industrial eﬄuents remains relevant over the past two centuries.Wastewater from the oil reﬁning, chemical-pharmaceutical and coke industries is particularly hazardous. These industries emitinto open water up to 4-10 tons of phenol per day. Earlier, we conducted studies aimed at studying the distribution of phenol inthree-component stratiﬁed systems consisting of phenol, water and acetic acid esters. Studies have been carried out to establishoptimal conditions for the extraction of phenol from wastewater by solid extractants - tributyl phosphate (TBPh), multiradicalphosphinoxide (MPh), diisooktylmethylphosphonate (DIOMPh). In the present work the regularities of phenol extraction fromindustrial wastewater by solid extractants depending on the acidity of the medium were investigated. The article presents theresults of experimental studies of phenol extraction by organic solvents under thermostatic conditions. We found that the mosteﬀective extraction of phenol occurs when the acidity of the medium pH = 1-7.