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Subject: Phenol and BPA in water. How to clean it?

Date: 09/16/00 at 5:05 PM
Posted by: Verstrepen
E-mail: Verstrepen_paul@yahoo.com
Message Posted:

Antwerp, Belgium, september 2000


Hay,

I am working in a plastic factory, and we're having a problem. We've got a lot of waste water witch contain phenol and BPA. The problem is that we have to clean the water but we don't know a good way of dowing it.
Can someone help me.
I'll send you the conditions of our process.

Now at the moment we use actiated carbon. It's a very expensive way and we are looking for an other way of cleening our waste water. The big problem is that we have to replace the activated carbon many times. We're in search of a continue method.

The waste water contains a lot of chemicals. The important are phenol and BPA. They have the highest concentrations.
Concentrations: normal production: phenol: 50 - 200ppm; BPA: 0 - 25ppm
Mal function: Phenol: 50-3000ppm; BPA: 25-3000ppm
The water is alkali: pH 8-13
Temperture: 40C
Flow: 150-200 m3/h
Output requitement: less than 3ppm phenol and less than 2 ppm BPA
Online time: 24/24
Concentration of NaCl: 2 - 4 % (no bio system can handle this fluctuations)
Phenol BPA
Carbolic Acid; Benzenol, Hydroxybenzene Bisfenol-A
2,2-Bis-4-Hydroxyphenylpropanal
4,4'isopropylidenediphenol

Mol wt 94,11 C6H5O 228,29 C15H16O2
m.p. 43 150 -159
b.p. 181,75 - 760 mm
70,86 - 10 m 220-250
Density 1,072220 20
1,057620 4
nD 1,5509 21
1,5418 18
Solubility Hot water Insoluble in water
Soluble in water, alcohol Very in alcohol, aceton and alkali
Very sol. in aceton Soluble in acetic acid


The waste water contains high concentrations of NaCl (and other salts in lower concentrations).
NaCl NaOH
Sodium Chloride Sodium hydroxide
Common salt
Mol wt 58,44 40
m.p. 130 318,4
b.p. 48 1390
Solubility 209g/100cc cold water 15
284g/100cc hot water 50
soluble in alcohol 42g/100cc cold water 0
347g/100cc hot water 100 sol. in alcohol
insol in aceton

Other waste products: in low concentrations
DOD-bisfenol
4,4'-Dihydroxydiphenyl
4,4'-Bifenol
MM = 186.2
C12H10O2
m.p.: 274-275C (278 C - ontbinding)

Bisfenol- TMC
HIP
trimethylcyclohexyl-bisfenol
1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexaan
MM = 310.44
C21H26O2
m.p.: 204-206C
b.p.: 277 C

Bisfenol M
4,4'-[1,3-phenyleen-bis(1-methyl-ethylideen)]-bisfenol
MM = 346.5
C24H26O2
m.p.: 138-140C

THPE
1,1,1-tris(p-Hydroxyphenyl)ethaan
MM = 306.36
C20H18O3
m.p.: 244-246C

IBK
Isatinebiskresol
1H-indole-2-one,3,3-bis(3,3'-dimethyl-4,4'dihydroxy diphenyl)
MM = 345.40
C22H19O3N
m.p.: 250C

IOP
Iso-octylfenol
p-(1,1,3,3 tetramethylbutyl)fenol
MM = 203.6
C14H22O
m.p.: 76C
b.p.: 277C

BUP
Butylfenol, 4-tert-Butylfenol
4-(1,1-Dimethylethyl)fenol
MM = 150.22
C10H14O
m.p.: 96-100C
b.p.: 236-238C

DPC
Difenylcarbonaat
MM = 214.22
C13H10O3
m.p.: 78-81C
b.p.: 301-302C

p-CPC
p-Cresylfenylcarbonaat
MM = 228.25
C14H12O3

4-Cumylfenol
4-(2-Phenylisopropyl)fenol
MM = 212.29
C15H16O
m.p.: 70-73C
b.p.: 335C


ing. Els Gijsels
Prod/Ir/Res.

Sorry, if there are written faults in it, my mother language isn't English.


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