WO2006096891A1

WO2006096891A1 - Process for removing phenol from water

Info

Publication number: WO2006096891A1
Application number: PCT/YU2005/000004
Authority: WO
Inventors: Jelenka Savkovic-Stevanovic
Original assignee: Jelenka Savkovic-Stevanovic
Priority date: 2005-03-11
Filing date: 2005-03-11
Publication date: 2006-09-14

Abstract

Procedure for phenol extraction from water marck that to extract phenol from water is carried out by adding corresponding solvent which builds new phase with phenol from water. The new formed phases upper and lower are separating. By extracting the upper phase phenol is removed from water. Advantages of this procedure from the others is that carried out fast and simple at the atmospheric conditions, without chemical reaction and secondary pollution, with commercial cotrresponding solvent and no energy requist. This discovery finding wide range applications in water depolluted and protection of corrosion. The discovery can be applied in the chemical industries for the wasted water depolluted of phenol. Generally, the discovery can be applied for drink, urban and industrial water depolluted of phenol.

Description

PROCESS FOR REMOVING PHENOL FROM WATER

1. Subject discovery description

a) Technical area

Discovery is regarded to procedure of the pollutant phenol removal from wasted water by extraction with corresponding solvent. Corresponding solvent and phenol from water build new liquid phase which is extracted from water. Discovery belongs to field chemical engineering and ecology.

b) Technical problem

Technical problem is the phenol removal from water by extraction without secondary pollution. Problem is consited in water depolluted from phenol with corresponding agent.

2. State of technique

Phenol builds azeotrop with correspoding solvent in determined ratio at the atmospheric conditions.

Extraction of the phenol with corresponding solvent is based on azeotrop building between phenol and corresponding agent in determined ratio. The obtained new liquid phase easy extracted.

Discovery references to procedure of the phenol removal from water with the little amount of the corresponding solvent. This patent is the first report in the literature showing the phenol azeotropic extraction procedure from water. With this procedure is removed phenol from drink water, urban water and industrial water. 3. Rigorous description of the discovery with illustrated examples

In the frame of this discovery was figured out that adding corresponding solvent in water polluted with phenol at the detremined mole ratio is building azeotrop which as a new formed liquid phase simple separated.

In the examples which given as the procedure illustrating according to discovery, but it is not limiting, supstances: water, phenol and corresponding solvent were used. When determined mole ratio is achieved in the mixture, azeotrop is building where new formed phase is simple extracting at the atmospheric pressure.

In a vessel which charged water with phenol adding step by step corresponding solvent while determined ratio achieved with phenol when is forming azeotrop. Water H2O has boiling temperature 100° C, molecular weight 18.02 g/mole and density 1.0 g/cm³ at atmospheric pressure and 4° C. Phenol Cδ Hs OH with

OH

H

molecular weight 94.11 g/mole, melting point 41.5O⁰C, boiling temperature 181.4°C and density 1.071 g/cm³ builds azeotrop with corresponding solvent at the atmospheric pressure. Azeotrop as a new phase is extracted.

Experiments were carried out by batch operation for different charges composition. Separation was performed at the atmospheric pressure and temperature. Holding time in the decanter depends from phenol amount in water. No phenol and added solvent detection in the water after extraction with accuracy 0.5 x 10. ^"4 The new formed phase lower and upper are separating by decanter. Poisonous and corrosion caused phenol phase is wasted. The discovery has wide range applications for drink, urban and industrial water depolluted of phenol.

Examples

Example 1.

In a vessel of the volume 0.5 dm³ water which contains of 1.00% mole of the phenol and then step by step corresponding solvent is adding. When azeotropic ratio is achieved the azeotrop is building between phenol and corresponding solvent at the atmospheric pressure. The formed azeotrop as an upper phase is extracting.

Example 2.

In a vessel of the volume 0.5 dm³ , water which contains of 5.00% mole of phenol was charging and then corresponding solvent is adding. When azeotropic ratio is achieved the azeotrop is building between phenol and corresponding solvent at the atmospheric pressure. The azeotrop as an upper phase is extracting.

Example 3.

In a vessel of the volume 1.00 dm³ , wasted water which contains of 8.00 % mole of phenol was charging and then adding corresponding solvent. When azeotropic ratio is reached azeotrop is building between phenol and corresponding solvent at the atmospheric pressure. The azeotrop as a upper phase is extracting.

Claims

PATENT CLAIMS

1. Procedure for phenol removal from water by extraction marck that, phenol separation is carried out adding corresponding solvent.

2. Procedure according to claim 1, marck that, that corresponding solvent was added to determined ratio with phenol.

3. Procedure according to claims 1-2, marck that, that the new phase is building at the atmospheric conditions.

4. Procedure according to claims 1-3, marck that, that extraction of the new formed phase is carried out.

5. Procedure according to claims 1-4, marck that, that extraction at the atmospheric conditions is carried out.