Wasteless Methods of Phenol Containing Industrial Waters Purification and New Modification of the Method of the Analysis of Phenolic Toxicants
Effective methods of purification of phenol industrial wastewaters and wastes based on the different chemical phenol transformations to insoluble in water low toxical compounds with some valuable properties have been discovered. Chemical method of dephenolation using sulfochlorides may be applied for purification of industrial waters with any initial phenol concentration. Condensation method is based on the polycondensation reaction of phenol and formaldehyde in the conditions of acid catalysis with the addition of the special reagent. Method permits to purify the wastewaters, which contain phenols, phenolalcohols, aldehydes, oligomers, dyestuffs, etc. We have elaborated an analysis and express-analysis of different phenols using sulfochlorides, RSO2Cl, as reagents which (especially aliphatic ones) are active and highly selective for phenols. The reaction is completed for 1-5 minutes in quantitative yield of arylsulfonates products, which are extremely stable compounds and can be easily determined.