13 Purolite A-300_20170726

PUR OoLITE'
ION EXCHANGE RESINS
Technical Data
PRODUCT DESCRIPTION
Purolite A-300 is a Type II, strongly basic gel anion
exchange resin with outstanding operating capacity and
excellent regeneration efficiency. A-300 removes all ions
including silica and CO2, however, it operates best on
waters having a high percentage of strong acids (FMA).
A-300 can be used in all types of demineralization equip-
ment where regeneration efficiency and high operating
capacities are needed. Purolite A-300 has excellent phys-
ical stability which allows for long life and better effi-
ciency within the operating bed. Whole bead counts are a
minimum of 92% clear beads with mechanical strengths
ranging over 300 grams. Purolite A-300 can be regener-
ated with sodium chloride to remove alkalinity from dif-
ferent water supplies. This dealkalization by ion exchange
prevents the formation of insoluble carbonate precipitates
and stops corrosion due to the formation of carbonic acid.
A-300 can also remove nitrates when regenerated with
salt. In some dealkalization cases, small amounts of caus-
tic is used in combination with salt during the regenera-
tion in order to enhance the resin operation. This addition
A-300. A-300E
Strong Base Type II
Anion Exchange Resin
gives higher operating capacity and lower silica leakage.
Purolite A-300E is a Type II strong base anion devoid of
taste and odor. A-300E meets the requirements of para-
graph 173.25 of the FDA Code of Federal Regulations
no. 21.
Capacities and Leakages of A-300 or A-300E are
based on the regenerant reaching the bed at either 70°C
or 95°F. With some water supplies, it will be necessary
to preheat the bed prior to the introduction of the
regenerant. In water supplies where the alkalinity is in
excess of 50%, keep in mind that you may be unable
to achieve these leakages and capacities. This is
because CO2 passing from the cation reacts with
anionic sites forming HCO3. During the regeneration
process of the anion, HCO3 is displaced by NaOH.
Additional NaOH then reacts with the HCO3 forming
Na2CO3. Since the above leakages and capacities are
based on having excess NaOH above theory, it may be
necessary to compensate for this problem.
Typical -
Polymer Matrix Structure Polystyrene Crosslinked divinylbenzene
Physical Form and Appearance
Clear Spherical Beads
Whole Bead Count
92% min.
Functional Groups
R(CH) (C H OH)N'
Ionic Form, as shipped
Cl-
Shipping Weight (approx.)
705 g/1 (44 lb/ft;)
Screen Size Range: - U.S. Standard Screen
16 - 50 mesh, wet
Particle Size Range
+1.2 mm <5%, -0.3 mm <1%
Chemical Resitance
Unaffected by dilute acids, alkalies and most solvents
Moisture Retention, Cl form
40 - 45%
Swelling Salt 4 OH
10% max.
Uniformity Coefficient
1.7 max.
Total Exchange Capacity, Cl- form,
wet, volumetric
dry, weight
1.45 - 1.6 eq/1 min.
3.5 - 3.7 eq/kg min.
Operating Temperature, OH Form
Cl- Form
105°F max. [Recommended 95°F]
170°F max.
H Range, Stability
No Limitations
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Page 1 of 6

•
Operation Rate
ir
Minutes Amount
Solution
Service 1.0 - 5.0 gpm/ft'
Effluent from
Cation exchanger
per design
per design
Backwash Refer to fig. 1
Influent water
5 - 20
10 - 25 gal/ft'
Regeneration 0.2 - 0.8 gpm/ft'
4% NaOH
60
4 - 10 lb/ft'
Rinse, (slow) 0.2 - 0.8 gpm/ft'
Decationized water
60
15 - 30 gal/ft'
Rinse, (fast) 1.0 - 5.0 gpm/ft'
Decationized water
-
25 - 45 gal/ft'
Backwash Expansion 50% to 75%
Design Rising Space 100%
"Gallons" refer to U.S. Gallon = 3.785 litres
HYDRAULICS
Pressure drop of a fluid passing through an ion exchange
column is related to the flow rate, viscosity and temper-
ature of the fluid. Typical values of pressure drop are
found in Figure 2. Backwash removes all particulate
matter filtered out by the exchanger and regrades the bed
eliminating any channels which may have formed.
Normally a backwash rate that expands the bed 50- 75%
for 5 to 10 minutes or till the effluent is clear is recom-
mended. Flow rate for the backwash should be achieved
gradually to prevent resin loss. See Figure 1.
REGENERATION
Purolite A-300 is supplied in the chloride form and must
be regenerated with a good grade of sodium hydroxide.
Both the slow and fast rinse remove the excess regener-
ant from the exchanger bed. The slow rinse displaces the
regenerant while the fast rinse rinses out all excess
regenerant.
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Page 2of6

100
80
Z
0
Z 60
X
W
0 40
m
0
20
Fig. 1 BED EXPANSION VS. BACKWASH
FLOW RATE
BACKWASH FLOW RATE
A,
G
V
oG ti\
^°
0
0
15.0
12.5
Y 10.0
H
U
Q
Q 7.5
U
0
Z
Q 5.0
Ir
W
tL
O
2.5
0
10
9
8
7
Q
d. 6
O
5
W
Cc
4
07
W 3
0r
IL
2
1
0
Fig. 2 PRESSURE DROP VS. FLOW RATE
FLOW RATE
_____A
____,-
___-W
mm
ii�
• AW
__
-__
1 2 3 4 5 gpm/ft2 0 10
BACKWASH FLOWRATE
20 30 40
FLOWRATE
DEALKALIZATION CAPACITY
Fig. 3 CAPACITY FOR DEALKALIZATION Fig. 4 CAPACITY FOR DEALKALIZATION
\
5•
Q6 5'
ec\
QQ
2
% ALKALINITY OF INFLUENT WATER
Capacity for Dealkalization
5 lbs. NaCl/ft3
0.25 lbs. NaOH/ft3
Down Flow Regeneration
30 inch Bed Depth
Flowrate of 2 gpm/ft3
To 10% Alkalinity End Point
15.0
12.5
Y 10.0
H
U
Q
Q 7.5
U
C7
Z
Q 5.0
Ir
W
IL
O
99
0
50 gpm/ft2
�05 c\\Jec
h QQF
�O
ti
20 % 40 % 60 % 80 % 100 %
% ALKALINITY OF INFLUENT WATER
Capacity for Dealkalization
5 lbs. NaCl/ft3
Down Flow Regeneration
30 inch Bed Depth
Flowrate of 2 gpm/ft3
To 10% Alkalinity End Point
Page 3 of 6
022310

20
18
--i 16
U
`Y 14
}
H
U 12
Q
d
Q 10
U
O 8
U
6
Q
M
O 4
z
NITRATE REMOVAL
CAPACITY FOR NITRATE (NO3)
PLUS SULFATE (SO4) REMOVAL
Regeneration = 10 lbs. NaCl/ft3
Flow Rate = 2 U.S. gpm/ft3
End Point = 2 ppm NO3 (as N)
20% 40% 60 % 80 % 100%
% EXCHANGEABLE ANIONS (NO3- + SO4 )
EXPRESSED AS CaCO3
CAPACITY IN KILOGRAINS/ft3
lbs. NaOH/ft3
@ 210C (70°F)
100% Concentration
% Silica of Total Anion Analysis
10% 20% 30%
40%
4
20.0
19.0 17.9
17.3
5
22.7
21.0 19.9
19.0
6
24.0
22.6 21.8
20.4
7
25.2
23.7 23.1
21.8
8
25.8
24.6 24.0
22.9
9
26.3
25.2 24.7
23.7
10
26.6
25.5 25.0
24.3
lbs. NaOH/ft3
@ 35°C (95°F)
100% Concentration
% Silica of Total Anion Analysis
10% 20% 30%
40%
4
22.9
22.0 21.0
20.1
5
24.1
23.1 22.2
21.3
6
25.0
24.0 23.0
22.2
7
26.0
24.9 23.8
23.1
8
26.7
25.4 24.5
23.8
9
26.9
26.0 25.2
24.4
10
27.0
26.2 25.4
24.6
D
m
m
0
u
m
m
Z
0
D
D
O
x
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Page 4 of 6

CHLORIDE CORRECTION
Percent chlorides have a direct effect on the capacity of by the capacity to determine your true capacity.
A-300, The chloride correction factor must be multiplied
% Chlorides 0 10 20 30 40 50 60 70 80 90 100
Correctional Factor 1.00 .93 .91 .88 .87 .86 .84 .83 .82 .81 .80
Example: Base operating Capacity x Chloride Correction = Operating Capacity
SILICA LEAKAGE as ppm CaCO3
lbs. NaOH/ft3
@ 21°C (70°F)
100% Concentration
% Silica of Total Anion Analysis
10% 20% 30%
40%
4
0.22
0.49 0.83
1.24
5
0.13
0.30 0.41
0.58
6
0.08
0.15 0.26
0.39
7
0.06
0.10 0.18
0.27
8
0.05
0.08 0.14
0.21
9
0.04
0.07 0.13
0.18
10
0.02
0.05 0.11
0.15
lbs. NaOH/ft3
@ 35°C (95°F)
100% Concentration
% Silica of Total Anion Analysis
10% 20% 30%
40%
4
0.10
0.20 0.33
0.50
5
0.05
0.11 0.18
0.25
6
0.04
0.06 0.10
0.16
7
0.03
0.05 0.08
0.11
8
0.02
0.04 0.06
0.09
9
0.01
0.03 0.05
0.08
10
0.01
0.03 0.05
0.07
SILICA CORRECTION FACTOR
Sodium leaking through the cation will pass through the off as in the regeneration process. The higher the
anion linking with the hydroxide group to form NaOH. sodium, the higher the silica leakage.
As NaOH migrates down the anion bed, silica is pushed
EFFECT OF SODIUM LEAKAGE ON SILICA LEAKAGE
Regenerant
Leakage
lbs. NaOH
4 6 8
10
1 ppm Na
1.15
1.1
1.05
1.02
3 ppm Na
1.38
1.25
1.15
1.11
5 ppm Na
1.6
1.4
1.27
1.18
7 ppm Na
1.9
1.6
1.35
1.2
Example: Base Silica Leakage x Correction Factor for Silica Leakage = Silica Leakage
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Page 5 of 6

PUROLITE
ION EXCHANGE RESINS
Purolite was founded in 1981 and is a leading manufacturer of ion exchange, catalyst, adsorbent and
specialty resins. Headquartered in Bala Cynwyd, PA, the company has ISO-9001 certified
manufacturing facilities in the USA, China, and Romania and operates dedicated R&D centers in the
USA, China, Romania, Russia, and the UK (HQ). Purolite, the only company focused exclusively on the
ion exchange market, has 40 sales offices in more than 30 countries.
Please call one of the main regional offices on the following page to obtain full contact details for the
nearest Purolite office responsible for your area.
Americas
The Purolite Company
150 Monument Road
Bala Cynwyd, PA 19004
Telephone: [phone]
Telephone: [phone]
Fax: [phone]
E-mail: info@ puroliteUSA.com
Europe
Purolite International Limited
Llantrisant Business Park,
Llantrisant, Wales
CF72 8LF
UK
Telephone: [phone]
Fax: [phone]
E-mail: [e-mail]
Asia Pacific
Purolite (China) Co Limited
Building D-705
No. 122 Shuguang Road
Hangzhou, Zhejiang
China 310007
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
For further information on Purolite products & services
visit www.purolite.com
Purolite® is a registered symbol of The Purolite Company
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