Electrodialysis with sacrificial magnesium anode for nutrient recovery from primary municipal wastewater : Effect on membrane fouling behaviours
Karande, Koustubh Ravindra ; Lipnizki, Frank LU
and Wu, Bing
(2024)
In Desalination
592.
- Abstract
The fertilizer industry is experiencing tremendous stress due to its dependence on limited natural resources and high energy consumption, thus great attention has been paid for alternative nitrogen and phosphorus resources. This study employed electrodialysis (ED) with sacrificial magnesium anode to recover nitrogen and phosphorus (towards struvite formation) from primary municipal wastewater and examined the effects of various operating conditions on ED membranes' fouling behaviour. The results revealed that (1) lowering the concentrate to feed volume (C/F) ratio would reduce overall ED stack resistance, while at a C/F < 0.5, the magnesium corrosion rate decreased with an increase of pH in the concentrate stream; (2) the cation... (More)
The fertilizer industry is experiencing tremendous stress due to its dependence on limited natural resources and high energy consumption, thus great attention has been paid for alternative nitrogen and phosphorus resources. This study employed electrodialysis (ED) with sacrificial magnesium anode to recover nitrogen and phosphorus (towards struvite formation) from primary municipal wastewater and examined the effects of various operating conditions on ED membranes' fouling behaviour. The results revealed that (1) lowering the concentrate to feed volume (C/F) ratio would reduce overall ED stack resistance, while at a C/F < 0.5, the magnesium corrosion rate decreased with an increase of pH in the concentrate stream; (2) the cation exchange membranes (CEM) adjacent to the feed chamber were more susceptible to foulant depositions (especially organics) than the anion exchange membrane (AEM); the total foulant density was linearly correlated with the increased electrical resistance; (3) increasing current density led to higher ion transport rate, however also promoted membrane fouling for the wastewater containing more solids; (4) the ammonium and phosphate mass transport rates were enhanced by increasing their concentrations in the feed instead of elevating current density. Higher concentrations of nutrient levels in the feed facilitated reduced scaling on membranes, possibly due to more formation of struvite. This study highlights the feasibility of simultaneously treating primary wastewater and recovering nutrients by combining gravity-driven membrane (GDM) filtration with ED.
(Less)
- author
- Karande, Koustubh Ravindra
; Lipnizki, Frank
LU
and Wu, Bing
- organization
- publishing date
- 2024-12-21
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Electrodialysis, Gravity-driven membrane filtration pretreatment, Ion exchange membrane fouling, Municipal wastewater, Nitrogen and phosphorus recovery, Sacrificial Mg anode, Struvite formation
- in
- Desalination
- volume
- 592
- article number
- 118150
- pages
- 11 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85205009997
- ISSN
- 0011-9164
- DOI
- 10.1016/j.desal.2024.118150
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2024
- id
- d3d072a9-6ca3-4e53-9e74-d3428ee641d4
- date added to LUP
- 2024-10-10 07:28:16
- date last changed
- 2025-04-04 13:51:58
@article{d3d072a9-6ca3-4e53-9e74-d3428ee641d4,
abstract = {{<p>The fertilizer industry is experiencing tremendous stress due to its dependence on limited natural resources and high energy consumption, thus great attention has been paid for alternative nitrogen and phosphorus resources. This study employed electrodialysis (ED) with sacrificial magnesium anode to recover nitrogen and phosphorus (towards struvite formation) from primary municipal wastewater and examined the effects of various operating conditions on ED membranes' fouling behaviour. The results revealed that (1) lowering the concentrate to feed volume (C/F) ratio would reduce overall ED stack resistance, while at a C/F < 0.5, the magnesium corrosion rate decreased with an increase of pH in the concentrate stream; (2) the cation exchange membranes (CEM) adjacent to the feed chamber were more susceptible to foulant depositions (especially organics) than the anion exchange membrane (AEM); the total foulant density was linearly correlated with the increased electrical resistance; (3) increasing current density led to higher ion transport rate, however also promoted membrane fouling for the wastewater containing more solids; (4) the ammonium and phosphate mass transport rates were enhanced by increasing their concentrations in the feed instead of elevating current density. Higher concentrations of nutrient levels in the feed facilitated reduced scaling on membranes, possibly due to more formation of struvite. This study highlights the feasibility of simultaneously treating primary wastewater and recovering nutrients by combining gravity-driven membrane (GDM) filtration with ED.</p>}},
author = {{Karande, Koustubh Ravindra and Lipnizki, Frank and Wu, Bing}},
issn = {{0011-9164}},
keywords = {{Electrodialysis; Gravity-driven membrane filtration pretreatment; Ion exchange membrane fouling; Municipal wastewater; Nitrogen and phosphorus recovery; Sacrificial Mg anode; Struvite formation}},
language = {{eng}},
month = {{12}},
publisher = {{Elsevier}},
series = {{Desalination}},
title = {{Electrodialysis with sacrificial magnesium anode for nutrient recovery from primary municipal wastewater : Effect on membrane fouling behaviours}},
url = {{http://dx.doi.org/10.1016/j.desal.2024.118150}},
doi = {{10.1016/j.desal.2024.118150}},
volume = {{592}},
year = {{2024}},
}