Surface modified affinity separation membrane

Electricallf filtratiori Applicanr:

! 111;Ill:ed merr brane

Surface modified membrane

affinity

separation

Non-porous membrane

gas permeabie

I s 1~ UIt II d Ltd

\tk

‘ij>/>i/[,l/lc(:ompact ‘I‘his pareilt

0

membranc

re

c rubular

alld

ability

o

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11ac shsct hrparate

n 31I Iilar/ionic components from slurl-ics c I .I ,p : irions is en~~anced by rhe addition of ) 1, o inorc electriciultrasonic flelds. Applic i: ic ns c this invention include separationi in ‘Y i1.r ; nd sewage t rcatment, ore processing, :!( log ( ~1 broths, food and chemicals ma, 1 ac:T I c and in the production of ceramics. 1 i cILi ncd a stabilised, laminar, hydrodynamic fi 1’~ i produced n a retentate particulatc

0

chamber

to p .ci\ ce ci)ntrolled

across

the rncrkl r.m:

to either

The

is subjected

,4C OI 1111 or pulsed

electric

> u i#:lc5 to migrate

which causes membranc

s I .f ~
conccIm

membrane

for

~em~permeable matrix

outwardly

is claimed

that

maximised

fields

an

of

macromolecules,

over

wil1 cnsurc

achieved

by

thc

microporous

ligand,

of insoluble

EI’ 880544

Datr: 2 December

through,

Icaving

sieve membrane

and

Engineering

and claims

for

use in molecular

a reduction

with this technique. Applicant: GE! S Ge dacht

Forschung

or mixtures

Hydrocarbons,

Researchers

fi c tr G <.SS report

n I( n ItNr;ne comprising

the invention

of

both support

the permeate.

It is reported

present

at a concentration

percent

in the feed stream

that

soluble

take place at 170 “C - 300°C.

which

is rendered

lt ,

m-1l;trticular by cross-linking with dialdeh) c e P tcording to t he workers GKSS,

the c( 11nl bclsiie membrane

suitable

for u ;( in s( parating

it

Patent number

at

Inventors:

is particularly

water vapour

from

process

Inventors:

P:inl mann,

K.

D.

Fritsch,

E.-M.

1)cppc, M. Schossig-Tiedemann Date: 2 Dece 1 b :I 1c’ I 98 Bellinger,

M.

E. W. Corcoran,

Inventorx

can

H.

W.

hollow fibre

Firstly,

r’:lat :s to apparatuc

; cclmr onent gases in a gas mixture rnembrane at i) 1s sy polymer

for separatinl using

a

temperatures point

it or

slightly

of an:’ Iiquid

superior

sepa.al:ior

composition are claimed

Young,

present of

in this D

components.

The

and polymers

I>atent.

US 5837032 J. Mc’ll, A. E Burmester,

K. E. McF eynolds,

Lacher,

J. E. Clark,

17 Noi :mbe

describes

comprised and mixing

method

forming

capable

of

solubilising

temperature

between

homogenous

mixture.

maintaining

the

temperature

forming agent,

fibre

of steps. material

the

a solvent

PVF

at

4 “C - 80 “C to form The second during

it is extruded

droplrr,

assembly in

planr

biomcdicJl

J, (1. Lew

the

a mixing

through

describes

capillary

that

asymmetrical.

are

a hollow

fìbre.

Finally

the

solvent

forming

agent

is removed

from

C. Z.

membrane.

R. M.

Patent numbeK

an asymmetrical

hollow

and

The

the smal1 porcs way around.

one

hydrophobic

pores

can

of the membranc

on the

inside

capillary

-

or rhc

that

at least

membrane

of hydrophilic

membranes.

Prcferably

thc

made

a flexible

material.

from

the

patent

membrancs large

It is reported

in the bundle

for

This

ultrafiltration

on the outside

other

included

module

is described.

filter

housing Usually

membrane material

such

polyether

sulphone

or another

It is an advantage

if rhe devicr

to

polysulphone, according carbon

material.

to the invention

made

ik rhe

hydrophobic suitable

is

ii

capillar)

hydrophobic

process,

a spinnetet

membrane

of water

NV

a

above

pore

to form

for

a

step involved

ar

form mixture

by

fluoride

and

mixture

range

for

hollow

polyvinylidene

a pore

after which

a

of a number

a fibre

(PVF),

T. C.

T. C’. J;:an :s, H. N. Beek, S. E. Bales,

B. L. Smith

@

the freezing

so as to achieve

R. A. ’W:ssling, G. J. Quarderer,

Hotz,

Dak

gas

above

c f leert ain monomers

Patent numb-i: Inventors:

and a method

ihc

1998

An ultrafìltration

Systems

a semipermeable

preparing

contacting This inventicr

huspendcd

Prime Water Systems

sterilisation

invention

constructing

TX, USA

for

1998

Self supporting membrane

membrane T I : ~Cyr.ara Company,

cas11\

high tlow rare g,ls

atmosphere

5. Ncmser,

DatL: 3 December

bc arranged

Applicantx

Applicarion\

Ultrafiltration membrane sterilisation of water

Deckman,

L. R. Czarnetzki

Datc 2 December

This

ilo\\

ih als0

EP 880487

J. A. McHenry,

Applicants: Koch Membrane

Glassy polJ,mer gas separation membranc!

from blocking

include

ir

solid

Patent number: WO 9853894

Applicant

E.1: I ti0400

Ir i,, shccr

prcvents

whicll

collecting

clean rooms.

of g IIe:.

Patent number

tìltcr,

the

off.

parlicularl>

air for microelecrronic

is

and 60 moie percent

This separation

reusable.

fìltering

tlow\

in modules.

thc coaring

and

and

0.1 mole

thar gas

in

lilrcrj

for coating

~ubstrares,

rhc

for

tìltering

\irc

\oIvcnI

fìbres assemhled

fìhre modules

filters

hydrogen

of about

in the feed stream.

cellul J ;e de rlvative,

oxygenates

and may be present

It is reported that the active layer is made f ‘o m : t least one originally waterI?rt r:.

coated

,,i

cvapomled

and liquid droplets

rhrough cleaned

flux decay

of the two are fed to the molecular

sieve in the feed stream a composite

separations

in membrane

pot” .I

IS useful

fihre

hollow

particlcs sicve

,Imorphour and olcophobic.

suhsrrate

is then

is also claimcd

the use of molecular

ih<.

coating

an ultra thin laycr of polym~r.

solvent

hollow

of

a dilurc

solution

this proces5

multiple

‘l’hi> i\

\Idc

prcfrrabl>

thar

hom

Residual

onc

is hydrophobic

Ir i\ Ireportcd

1998

gas permcablc,

perfluor«-2.2.ciimethyl-I

which

polymcr

claimed

F ilctoporous membrane

water-insolub

of

g.1,

continuou\

surface.

wilh

solution,

Inuentors: E. Klein, D. H. Yeager

membranes

Composite

Inc.

teqistanr

,1 membt-ane conracring

copolymcr dioxole,

describes

fouling bv coating

subsrratc

polymer

ccll

fragments.

This patent

mixtures

polymer

.~nd

flux,

lIltra thin layers of a non-pol-ous

It

ZIUiele y, R. Wakeman

M.

and active

membranc\

ligand

cello.

Applicant: F.xxon Research

Systems,

10 .I pi<~ccss 01 torming

scparation

membrane

1998

relalcs

Iocalised

E P 871079

DatP: 25 Nov(:rni)rr

parent

high

surfacc.

this configuration capacity

Ihih

compact,

affìnity

rhc matrix

for use in the Capture

biological

Molecular

Inventorx

highly

A

affinity

away from the

minimise

fouling. Patent numbe,:

of from

binding

cspecially

separatitrnx.

that supports

blembrane

~i~p~ìt.~rion

membranc

concentrations

oriented

.Itfìnity

biological

is revealed

surfacc

dn

cellulose

Patent number

fl
fìltrat:

1hc parcnr

from

as

is provided

rl

nylon,

with

a

filter.

and the fibre

Patent numbex hentor:

WO 9853901

J. Scharstuhl,

Datp: 3 December

A. Kupecz

1998

EP 880399

Inuentors: J. I? I’uglia, D. E McKinley Date: 2 December

1998

1998

-11111

Membrane Technology No. 104