ST (PES 10kDa) – Industrial

Industrial Ultrafiltration Spiral-Wound Element:
ST (PES 10kDa)

Synder Filtration’s Ultrafiltration Elements offer an optimal combination of both flux and rejection in a comprehensive range of MWCO’s. Contact us today to learn more about our complete line of membrane products and services.

Synder’s ST membrane is Synder’s most popular ultrafiltration membrane used for whey protein (WPC/WPI) concentration in the dairy industry. With a molecular weight cut-off of 10kDa, it offers an ideal blend of flux and protein separation, and is sometimes used in conjunction with MT and/or VT for these types of applications. Ultrafiltration membranes such as ST are an important part of whey processing technology as they are able to efficiently and cost-effectively concentrate proteins within different types of whey (acid, sweet or casein) and maintain membrane durability. Diafiltration can also be employed during UF processing to increase yields and recovery of the proteins. MAX (high pH/high temperature) versions of Synder’s ultrafiltration membranes are also available, and can be sanitized without the use of chlorine, further enhancing the membrane and equipment life. Other applications for this membrane include protein/enzyme concentration, endotoxin and pyrogen removal and blood protein concentration in the biopharmaceutical industry, and gelatin concentration and egg white concentration in the food & beverage industry.

INDUSTRIAL SERIES BENEFITS

Widest range of UF MWCO’s available
Good resistance to pH and temperature
High resistance to fouling
Customizable dimensions for unique housings

COMMON APPLICATIONS

Whey protein concentrate & isolate
production
Enzyme concentration
Gelatin concentration
Beverage
clarification

Element Specifications

RECOMMENDED OPERATING PARAMETERS

Membrane Type
Proprietary PVDF	Spiral-Wound with netted outerwrap or fiber glass hardshell (FRP)

Pressure	PSI	Bar
Max Inlet Pressure	116	8.0
Min Outlet Pressure	10	0.7
Max Differential Pressure per Element	18	1.2
Max Permeate Backpressure	5	0.3

Note: Soft start on boost pumps required to minimize pressure/flow shocks to elements.

Temperature	Fahrenheit	Celsius
Max. Operating	122°	50°
Max. CIP Temperature	122°	50°

pH Parameters	pH
pH Range during Operation at 25°C Max	1.0-11.0
pH Range during CIP Operation at 50°C Max	2.0-11.0

Peroxide	Max ppm.
Free Peroxide in Product During Operation	<3 ppm
Peroxide as a sanitizer at 25°C Max, pH6-7, 10minutes recirculation	0.1%

Chlorine	Norm PPM	Max PPM
Free Chlorine During Operation	0	<0.1
Chlorine During CIP at pH10.8-11.0 and 50°C	150	180

Note: Maximum chlorine exposure for all elements is 30 minutes per day at pH and temperature conditions listed above.

DIMENSIONS & WEIGHT

Element	Model No.	Diameter (B) in (cm)	Length (A) in (cm)	PWT ID/OD in (cm)	Tube Extension (C) in (cm)	Dry Weight lb (kg)
1.8"	1812TM	1.8” (4.6)	11.75” (29.8)	0.665” (1.71)	0.75” (perm) 1.00” (plug)	1.0 (.45)
2.5"	2540TM 2540HF 2540HM	2.4” (6.1) 2.4” (6.1) 2.4” (6.1)	40.0” (101.6) 40.0” (101.6) 40.0” (101.6)	0.75” (1.90) 0.625” (1.59) 0.75” (1.90)	1.00” (2.54) – 1.00” (2.54)	4.0 (1.8) 4.0 (1.8) 4.0 (1.8)
4"	4040TM 4040HM 4040HF	3.9” (9.9) 3.9” (9.9) 3.9” (9.9)	40.0” (101.6) 40.0” (101.6) 40.0” (101.6)	0.75” (1.90) 0.75” (1.90) 0.625” (1.59)	1.00” (2.54) 1.00” (2.54) –	12.0 (5.5) 12.0 (5.5) 12.0 (5.5)
8"	7940HF 8040HF	7.9” (20.1) 7.9” (20.1)	40.0” (101.6) 40.0” (101.6)	1.138” (2.89) 1.125” (2.86)	– –	35.0 (15.9) 35.0 (15.9)

Recommended Element Cross Flow Rate

Element

Feed Spacer (in miles)

1.8"

m³/hr
gpm

0.7
3

0.8
3

0.9
4

1.0
4

1.1
5

2.5"

m³/hr
gpm

1.3
6

1.5
7

1.8
8

2.0
9

2.1
9

4.0"

m³/hr
gpm

3
15

4
17

5
20

5
23

5
24

m³/hr
gpm

15
66

17
75

20
89

23
99

24
105

*Note: The recommended cross flow rate will be subject to differential pressure limitations and specific applications.

Synder_SpecificMembranes-img1

Membrane Area(SQ. FT.)

Element

Feed Spacer (in mils)

1812TM

3.1

2.7

2.1

1.6

1.3

2540M

2540F

4040M

4040F

7940F

379

335

268

210

178

8040F

379

335

268

210

178

TECHNICAL NOTES

For element sizes not listed, please call or email Synder Filtration for details. We can design an element to fit your exact needs – just specify the element outer diameter (OD) or vessel/housing inner diameter (ID), element inner diameter (ID), and length. Elements are also available with or without a controlled bypass tail. Additional feed spacers are also available. Trials should be conducted to determine optimal application conditions.