Ammonia separation from wastewater using bipolar membrane electrodialysis

Abstract Nitrogen pollution is a serious environmental challenge in natural water and thus selective ammonia separation in wastewater treatment is of great importance to decrease the nitrogen load to natural water systems. Bipolar membrane electrodialysis (BMED) is a relatively new ion exchange memb...

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Autores principales:	Mariam Mohammadi, Hui Guo, Pengyi Yuan, Vladimir Pavlovic, John Barber, Younggy Kim
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	Industrial electrochemistry TP250-261 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/0777276a1ffc4d30b5e042b4937a9236
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spelling	oai:doaj.org-article:0777276a1ffc4d30b5e042b4937a92362021-11-23T18:05:26ZAmmonia separation from wastewater using bipolar membrane electrodialysis2698-597710.1002/elsa.202000030https://doaj.org/article/0777276a1ffc4d30b5e042b4937a92362021-11-01T00:00:00Zhttps://doi.org/10.1002/elsa.202000030https://doaj.org/toc/2698-5977Abstract Nitrogen pollution is a serious environmental challenge in natural water and thus selective ammonia separation in wastewater treatment is of great importance to decrease the nitrogen load to natural water systems. Bipolar membrane electrodialysis (BMED) is a relatively new ion exchange membrane technology that can be used for ammonia recovery from wastewater as a beneficial substance. A bench‐scale BMED stack with seven pairs of bipolar membrane (BPM) and a cation exchange membrane (CEM) was operated under various voltage applications to separate ammonia from dewatering centrate (liquid downstream from dewatering of anaerobically digested wastewater sludge). Ammonia in the wastewater was rapidly separated (up to 87% in 30 min) and recovered as ammonium hydroxide solution using the BMED stack. We found that the maximum rate of ammonium separation was governed by the concentration polarization near CEMs rather than water transport into BPMs. In addition, even with the significantly high organic level in dewatering centrate (408 mg/L as total suspended solids), high efficient ammonia separation was maintained over 8 repeated BMED operations without any pretreatment of the feed wastewater, indicating effective organic fouling control with regular chemical cleaning. Furthermore, BMED operation for 30 minutes at 5.0 V per cell pair was found to be ideal for high purity ammonium hydroxide production and low electrical energy consumption. Based on the high separation efficiency and low energy consumption, we suggest that BMED be further investigated as an attractive option for ammonia separation and recovery from wastewater.Mariam MohammadiHui GuoPengyi YuanVladimir PavlovicJohn BarberYounggy KimWiley-VCHarticleIndustrial electrochemistryTP250-261ChemistryQD1-999ENElectrochemical Science Advances, Vol 1, Iss 4, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Industrial electrochemistry TP250-261 Chemistry QD1-999
spellingShingle	Industrial electrochemistry TP250-261 Chemistry QD1-999 Mariam Mohammadi Hui Guo Pengyi Yuan Vladimir Pavlovic John Barber Younggy Kim Ammonia separation from wastewater using bipolar membrane electrodialysis
description	Abstract Nitrogen pollution is a serious environmental challenge in natural water and thus selective ammonia separation in wastewater treatment is of great importance to decrease the nitrogen load to natural water systems. Bipolar membrane electrodialysis (BMED) is a relatively new ion exchange membrane technology that can be used for ammonia recovery from wastewater as a beneficial substance. A bench‐scale BMED stack with seven pairs of bipolar membrane (BPM) and a cation exchange membrane (CEM) was operated under various voltage applications to separate ammonia from dewatering centrate (liquid downstream from dewatering of anaerobically digested wastewater sludge). Ammonia in the wastewater was rapidly separated (up to 87% in 30 min) and recovered as ammonium hydroxide solution using the BMED stack. We found that the maximum rate of ammonium separation was governed by the concentration polarization near CEMs rather than water transport into BPMs. In addition, even with the significantly high organic level in dewatering centrate (408 mg/L as total suspended solids), high efficient ammonia separation was maintained over 8 repeated BMED operations without any pretreatment of the feed wastewater, indicating effective organic fouling control with regular chemical cleaning. Furthermore, BMED operation for 30 minutes at 5.0 V per cell pair was found to be ideal for high purity ammonium hydroxide production and low electrical energy consumption. Based on the high separation efficiency and low energy consumption, we suggest that BMED be further investigated as an attractive option for ammonia separation and recovery from wastewater.
format	article
author	Mariam Mohammadi Hui Guo Pengyi Yuan Vladimir Pavlovic John Barber Younggy Kim
author_facet	Mariam Mohammadi Hui Guo Pengyi Yuan Vladimir Pavlovic John Barber Younggy Kim
author_sort	Mariam Mohammadi
title	Ammonia separation from wastewater using bipolar membrane electrodialysis
title_short	Ammonia separation from wastewater using bipolar membrane electrodialysis
title_full	Ammonia separation from wastewater using bipolar membrane electrodialysis
title_fullStr	Ammonia separation from wastewater using bipolar membrane electrodialysis
title_full_unstemmed	Ammonia separation from wastewater using bipolar membrane electrodialysis
title_sort	ammonia separation from wastewater using bipolar membrane electrodialysis
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/0777276a1ffc4d30b5e042b4937a9236
work_keys_str_mv	AT mariammohammadi ammoniaseparationfromwastewaterusingbipolarmembraneelectrodialysis AT huiguo ammoniaseparationfromwastewaterusingbipolarmembraneelectrodialysis AT pengyiyuan ammoniaseparationfromwastewaterusingbipolarmembraneelectrodialysis AT vladimirpavlovic ammoniaseparationfromwastewaterusingbipolarmembraneelectrodialysis AT johnbarber ammoniaseparationfromwastewaterusingbipolarmembraneelectrodialysis AT younggykim ammoniaseparationfromwastewaterusingbipolarmembraneelectrodialysis
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Ammonia separation from wastewater using bipolar membrane electrodialysis

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