3 replies to this topic

[trilok_sontakke]

Dear friends

I want to separate mixture of ethyl acetate and IPA of 90:10 %w/w composition.Ethyl acetate and IPA forms azeotrope at 74.79 deg C and azeotropic composition is % EA=30.46,%IPA=69.54
can anybody suggest the suitable entrainer?? I am thinking of carbon disulfide which forms azeotrope with IPA at 44.59 deg C with composition %CS2=90.08,%IPA=9.92
CS2 and IPA can be separated by water extraction of IPA and IPA-water by using cyclohexane entrainer in distillation column.But I am not getting data whether CS2 forms azeotrope with EA.
Second way I am thinking of is water extraction if EA-IPA mixture itself which gives two mixtures
1) EA-Water (95:5) 2)IPA-Water.
EA and water forms azeotrope at 71 deg C with %EA=8. please suggest on this system.if anybody has the practical experience of separating EA-Water please suggest. I am thinking of using dichloromethane (MDC) as entrainer but MDC-Water azeotropic composition is 98:2 so water removal rate is slow.please suggest suitable entrainer.

Thanks
TRILOK

[trilok_sontakke]

I tried salting out in EA-Water and I found 80% of water seperates, will this be advisable??




Thanks
Trilok

[trilok_sontakke]

Membrane separation is good technique but it is very expensive also it is not advisablr if you are handling huge volumes.
There are also issues with regeneration.