Dow Water & Process Solutions

Ion Exchange Resins for Beet Processing

Dow provides a wide variety of resins designed specifically for beet syrup processing such as de-ashing, de-calcification (softening), decolorization, invert sugar production, and chromatographic separation of molasses to recover sucrose, betaine, or amino acids.

Operation	What it Does	Resin(s) Used
Softening - conventional process	Removal of calcium prior to evaporation, using NaCl as regenerant	DOWEX™ HCR-S strong acid cation resin or DOWEX MARATHON C-10 strong acid cation resin
Softening - High-flow process	Removal of calcium prior to evaporation, especially for softening when sucrose will be recovered from molasses by chromatographic separation (molasses de-sugarization; ion exclusion)	DOWEX MAC-3 weak acid cation resin
Softening - Gryllus process	Removal of calcium prior to evaporation, using thick juice as regenerant	DOWEX MONOSPHERE™ C600B strong acid cation resin
Softening - NRS process	Removal of calcium prior to evaporation, using NaOH as regenerant	DOWEX HCR-S strong acid cation resin or DOWEX MARATHON C-10 strong acid cation resin or DOWEX MONOSPHERE C600B strong acid cation resin
Quentin process	Removal of calcium prior to evaporation, replacing calcium with magnesium ion	DOWEX MONOSPHERE C600B strong acid cation resin
Softening of thin juice- especially when recovering sucrose from molasses	Used only prior to chromatographic separation	DOWEX MAC-3 weak acid cation resin
Chromatographic separation of molasses	Sucrose recovery of molasses	DOWEX MONOSPHERE 99K 320/350 chromatographic separation resins
Decolorization	Removal of color from beet solutions	DOWEX MARATHON MSA strong base anion resin DOWEX MSA-1 C strong base anion resin DOWEX OPTIPORE™ SD-2 adsorbent
Chromatographic Extract Quality Improvement	Treatment of the sucrose product stream from chromatographic sucrose recovery to reduce color and foaming, making extract processing more profitable	DOWEX OPTIPORE SD-2 adsorbent
Sugar inversion	Conversion of saccharose (sucrose) to glucose and fructose	DOWEX 50Wx4 strong acid cation resin DOWEX 88 (H) strong acid cation resin

DOWEX™ Ion Exchange Resins

Product	Description	Type	Matrix	Total Exchange Capacity* eq/l (kgr/ft3)	Available Forms
DOWEX MONOSPHERE 99K/320	Chromatographic separation resin for size exclusion and ion exclusion.	Strong Acid Cation	Styrene-DVB, Gel	1.5 (H+ Form)	K+
DOWEX MONOSPHERE 99K/350	Chromatographic separation resin for size exclusion and ion exclusion.	Strong Acid Cation	Styrene-DVB, Gel	1.5 (H+ Form)	K+
DOWEX MARATHON WBA	A uniform particle size, high capacity, weak base anion exchange resin for water demineralization applications.	Weak Base Anion	Styrene-DVB, Macroporous	1.3 (28.4)	FB (Free Base)
DOWEX MSA-1 C	A macroporous strong base anion exchange resin for mixed bed demineralization and condensate polishing applications.	Type I Strong Base Anion Resin	Styrene-DVB, Macroporous	1.0 (21.9)	Cl-
DOWEX MAC-3	A macroporous weak acid cation exchange resin used for water softening, dealkalization, and demineralization applications.	Weak Acid Cation	Polyacrylic, Macroporous	3.8 (83.0)	H+
DOWEX OPTIPORE SD-2	Polymeric adsorbent used to decolorize HFCS, corn syrup, sucrose and fruit juices. Meets CFR 173.25.	Adsorbent	Styrene-DVB, Macroporous		Hydrophic
DOWEX HCR-S	A high capacity cation exchange resin for industrial softening and demineralization applications.	Strong Acid Cation	Styrene-DVB, Gel	2.0 (43.7) 1.8 (39.3)	Na+ and H+
DOWEX MARATHON MSA	Uniform particle size, high capacity, macroporous strong base anion exchange resin for water demineralization applications.	Type I Strong Base Anion	Styrene-DVB, Macroporous	1.1 (24.0)	Cl-