Pilot-Scale Evaluation of Bicarbonate-Form Anion Exchange for DOC Removal in Small Systems

Alysse Ness; Treavor Boyer

doi:10.5942/jawwa.2017.109.0124

Pilot-Scale Evaluation of Bicarbonate-Form Anion Exchange for DOC Removal in Small Systems

Alysse Ness, Treavor Boyer

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

This article highlights results from an ion exchange (IX) pilot-plant study that evaluated bicarbonate-form anion exchange resin (AER) with sodium bicarbonate (NaHCO₃) regeneration for dissolved organic carbon (DOC) removal. Sodium chloride (NaCl) is the conventional regeneration salt; however, NaHCO₃ could be used as an alternative to reduce the environmental impacts associated with NaCl brine disposal. In a comparison of chloride-form AER and bicarbonate-form AER, results indicated that chloride-form AER and bicarbonate-form AER have a similar affinity for DOC; chloride-form AER treats more bed volumes before breakthrough than bicarbonate-form AER; chloride-form AER is regenerated 10–48% more efficiently with NaCl compared with bicarbonate-form AER regenerated with NaHCO₃; polyacrylic AER is regenerated more efficiently than polystyrene AER using both NaCl and NaHCO₃; and the total cost of using NaCl and NaHCO₃ is comparable when brine disposal is considered. Results from this study provide guidance for small water systems considering IX treatment.

Original language	English (US)
Pages (from-to)	13-26
Number of pages	14
Journal	Journal - American Water Works Association
Volume	109
Issue number	12
DOIs	https://doi.org/10.5942/jawwa.2017.109.0124
State	Published - Dec 2017

Keywords

Anion Exchange
Brines
Dissolved Organic Carbon
Ion Exchange
Pilot Plants
Regeneration
Resins
Small Water Systems
Sodium Chloride
bicarbonate, brine disposal
ion exchange
pilot

ASJC Scopus subject areas

General Chemistry
Water Science and Technology

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10.5942/jawwa.2017.109.0124

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title = "Pilot-Scale Evaluation of Bicarbonate-Form Anion Exchange for DOC Removal in Small Systems",

abstract = "This article highlights results from an ion exchange (IX) pilot-plant study that evaluated bicarbonate-form anion exchange resin (AER) with sodium bicarbonate (NaHCO3) regeneration for dissolved organic carbon (DOC) removal. Sodium chloride (NaCl) is the conventional regeneration salt; however, NaHCO3 could be used as an alternative to reduce the environmental impacts associated with NaCl brine disposal. In a comparison of chloride-form AER and bicarbonate-form AER, results indicated that chloride-form AER and bicarbonate-form AER have a similar affinity for DOC; chloride-form AER treats more bed volumes before breakthrough than bicarbonate-form AER; chloride-form AER is regenerated 10–48% more efficiently with NaCl compared with bicarbonate-form AER regenerated with NaHCO3; polyacrylic AER is regenerated more efficiently than polystyrene AER using both NaCl and NaHCO3; and the total cost of using NaCl and NaHCO3 is comparable when brine disposal is considered. Results from this study provide guidance for small water systems considering IX treatment.",

keywords = "Anion Exchange, Brines, Dissolved Organic Carbon, Ion Exchange, Pilot Plants, Regeneration, Resins, Small Water Systems, Sodium Chloride, bicarbonate, brine disposal, ion exchange, pilot",

author = "Alysse Ness and Treavor Boyer",

note = "Funding Information: This article was made possible by US Environmental Protection Agency (USEPA) grant R835602. Its contents are solely the responsibility of the grantee and do not necessarily represent the official views of the agency. Further, USEPA does not endorse the purchase of any commercial products or services mentioned in the publication. Publisher Copyright: {\textcopyright} 2017 American Water Works Association",

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AU - Ness, Alysse

AU - Boyer, Treavor

N1 - Funding Information: This article was made possible by US Environmental Protection Agency (USEPA) grant R835602. Its contents are solely the responsibility of the grantee and do not necessarily represent the official views of the agency. Further, USEPA does not endorse the purchase of any commercial products or services mentioned in the publication. Publisher Copyright: © 2017 American Water Works Association

PY - 2017/12

Y1 - 2017/12

N2 - This article highlights results from an ion exchange (IX) pilot-plant study that evaluated bicarbonate-form anion exchange resin (AER) with sodium bicarbonate (NaHCO3) regeneration for dissolved organic carbon (DOC) removal. Sodium chloride (NaCl) is the conventional regeneration salt; however, NaHCO3 could be used as an alternative to reduce the environmental impacts associated with NaCl brine disposal. In a comparison of chloride-form AER and bicarbonate-form AER, results indicated that chloride-form AER and bicarbonate-form AER have a similar affinity for DOC; chloride-form AER treats more bed volumes before breakthrough than bicarbonate-form AER; chloride-form AER is regenerated 10–48% more efficiently with NaCl compared with bicarbonate-form AER regenerated with NaHCO3; polyacrylic AER is regenerated more efficiently than polystyrene AER using both NaCl and NaHCO3; and the total cost of using NaCl and NaHCO3 is comparable when brine disposal is considered. Results from this study provide guidance for small water systems considering IX treatment.

AB - This article highlights results from an ion exchange (IX) pilot-plant study that evaluated bicarbonate-form anion exchange resin (AER) with sodium bicarbonate (NaHCO3) regeneration for dissolved organic carbon (DOC) removal. Sodium chloride (NaCl) is the conventional regeneration salt; however, NaHCO3 could be used as an alternative to reduce the environmental impacts associated with NaCl brine disposal. In a comparison of chloride-form AER and bicarbonate-form AER, results indicated that chloride-form AER and bicarbonate-form AER have a similar affinity for DOC; chloride-form AER treats more bed volumes before breakthrough than bicarbonate-form AER; chloride-form AER is regenerated 10–48% more efficiently with NaCl compared with bicarbonate-form AER regenerated with NaHCO3; polyacrylic AER is regenerated more efficiently than polystyrene AER using both NaCl and NaHCO3; and the total cost of using NaCl and NaHCO3 is comparable when brine disposal is considered. Results from this study provide guidance for small water systems considering IX treatment.

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KW - bicarbonate, brine disposal

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Pilot-Scale Evaluation of Bicarbonate-Form Anion Exchange for DOC Removal in Small Systems

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Keywords

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