Membrane Technology for liquid/liquid and liquid/solid separation

Presentation at SAAFoST

30 September 2014

“Membrane Technology in F&B for increased Profitability”

Carsten Orzol / MD

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Endotoxin / Pyrogen Fat Globules

Relative

size of components

1.000 10.000 100.000 500.000 Molecular Weight, D

1.000 Micro Particle Range Macromolecular Range Molecular Range Ionic Range

Sugars Vitamins

techniques de filtration conventionnelles

Whey protein aggregates, Cheese fines

Minerals Whey Protein

Separation

Process

Microfiltration REVERSE OSMOSIS

NANOFILTRATION

ULTRAFILTRATION

MICROFILTRATION

PARTICLE FILTRATION

Aqueous Salt Casein micelles Bacteria

Yeast / Moulds

0.001 0.01 0.1 1.0 10 100 Micrometers [Log Scale]

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Application Examples ....

Treatment of Dairy Waste Water

„White Water“ Treatment

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Application Examples ....

Oil/Water Separation

Sugar/Water Separation

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Cheese Whey treatment, here Combination of Ultrafiltration and Reverse Osmosis,

(UF treats homogenized fats)

Application Examples ....

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1 – Membrane Modules

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• 0.5 – 1.4 mm inner diameter

• 0.02 – 50 m² membrane area

• Polymers: PES, PAN, CTA

• 6 – 500 kD cut-off

Hollow Fibre Membrane Module

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Permeate manifold Retentate

Permeate

Retentate

Spacer

Membrane

Membrane Permeate flow

support layer

Feed

Feed

Permeate

Spiral Membrane Module

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Ceramic Membrane Module

Filtrate

Channel

Retentate

Membrane

Carrier

• 2.0 – 8.0 mm channel ID

• ceramic material Al2O3, Zr2, TiO2

• Selectivity 0.001 µm to 3.0 µm

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2 – Whey Protein Concentration

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Whey Protein Concentration:

Ultrafiltration membranes are able to produce high grades of Whey

Protein Concentrate from Cheese Whey utilising crossflow filtration

technology. Typically TDS concentrations are raised from 6 % to 20 %.

Benefits:

- High grades of Whey Protein Concentrate (WPC 30 – WPC 80)

- Removal of Lactose and Ash from Protein solution optional via Diafiltration

- Reduction on energy usage during evaporation process

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UF-Plant for Protein recovery from Cheese Whey

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3 - Aeration / De-aeration

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„CO2 adjusted“ and „CO2 not adjusted“ beer

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• Gas in contact with water will tend

to dissolve into water

• The total amount of gas that will

dissolve into water is proportional to

the gas pressure

• Henry’s law (P=Hx)

P = partial pressure of the gas in contact with the water

H = Henry’s proportionality constant of the gas

x = concentration of dissolved gas in water

Air at 760 mm Hg

Dissolved oxygen in water = 8.5 ppm

Dissolved nitrogen in water = 14.1 ppm

Dissolved Gasses /Henry’s Law

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vacuum

and/or

strip-gas L

iqu

id

c O2

y O2

Liquid/gas

contact surface

at the pore

GTM process

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200-220 µm

300 µm

GTM fibre

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liquid volume flow

vacuum and/or

strip-gas strip-gas / or vacuum

liquid volume flow

module distributor hollow fibre membrane manifold

baffle housing

GTM contactor

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Gas Transfer Membrane Plant for removal of dissolved CO2 from Beer

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4 – Waste Water Treatment

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Filtrate Feed

Feed

Filtrate

Excess sludge

Membrane module

Biological Waste Water Treatment

Excess sludge

Conventional

MBR Technology

(Free of suspended solids, bacteria, adherent virus, insoluble COD)

(Contains suspended solids, bacteria, adherent virus,

insoluble COD)

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Typical Dairy Effluent Qualities

Waste Water MBR Permeate

pH - 4.2 8.1

Turbidity NTU 976 0

NH4-N mg/l 23.03 0.39

NO3-N mg/l 110 58

COD mg/l 4275 49

TSS mg/l 224 0

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Membrane sheets as self supporting pockets

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Membrane Bioreactor (MBR)

Permeate

uprising Flow

Aerator

Air

Membrane

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BioCel MBR

Membrane

Permeate spacer

Composite (entire surface)

Permeate extraction

2mm

Air Diffuser

Guiding baffles

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MBR Plant for Dairy Waste Water

(capacity 200 m³/day)

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MBR Plant for Dairy Waste Water

(capacity 200 m³/day)

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