Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox

This study examined the pre-oxidation of ammonium using a nanofiltration (NF) hollow fiber membrane module to provide an alternative to conventional partial nitrification preceding Anammox. A permeability study showed that NF membranes were suitable for use in the pre-oxidation of ammonium due to h...

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Main Authors:	Mohd Nawi, Mohd Nazri, Stuckey, David
Format:	Article
Language:	English English English
Published:	Elsevier B.V. 2018
Subjects:	TP155 Chemical engineering
Online Access:	http://irep.iium.edu.my/65159/ http://irep.iium.edu.my/65159/ http://irep.iium.edu.my/65159/ http://irep.iium.edu.my/65159/1/65159_Pre-oxidation%20of%20ammonium%20using%20nanofiltration.pdf http://irep.iium.edu.my/65159/2/65159_Pre-oxidation%20of%20ammonium%20using%20nanofiltration_SCOPUS.pdf http://irep.iium.edu.my/65159/13/65159%20Pre-oxidation%20of%20ammonium%20using%20nanofiltration%20membranes%20for%20partial%20WOS.pdf

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spelling	iium-651592019-01-27T08:47:53Z http://irep.iium.edu.my/65159/ Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox Mohd Nawi, Mohd Nazri Stuckey, David TP155 Chemical engineering This study examined the pre-oxidation of ammonium using a nanofiltration (NF) hollow fiber membrane module to provide an alternative to conventional partial nitrification preceding Anammox. A permeability study showed that NF membranes were suitable for use in the pre-oxidation of ammonium due to high ammonium fluxes across the membrane (low rejection of ammonium), while most COD (in the form of glucose) was retained inside the bulk phase (high rejection of glucose-COD). In pre-oxidation, ammonium oxidizing bacteria (AOB) grown in the shell-side of the membrane module could oxidize the ammonium diffusing from the tube side mainly to nitrite, which then diffused back into the tube side, resulting in a mixture of ammonium and nitrite in the exit stream in an approximately equimolar ratio. This would meet the requirement for the Anammox process as suggested by previous reports. The application of a membrane process for the pre-oxidation of ammonium was found to be promising at a laboratory-scale, and practically viable at a scale similar to a full-scale reactor (Whitlingham STC, Norwich, UK) based on an estimate of the number of HF modules needed. However, a proper optimization study of the process is strongly recommended so that its feasibility could be further examined at a larger scale linking both nitritification and Anammox together. Elsevier B.V. 2018-12-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/65159/1/65159_Pre-oxidation%20of%20ammonium%20using%20nanofiltration.pdf application/pdf en http://irep.iium.edu.my/65159/2/65159_Pre-oxidation%20of%20ammonium%20using%20nanofiltration_SCOPUS.pdf application/pdf en http://irep.iium.edu.my/65159/13/65159%20Pre-oxidation%20of%20ammonium%20using%20nanofiltration%20membranes%20for%20partial%20WOS.pdf Mohd Nawi, Mohd Nazri and Stuckey, David (2018) Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox. Chemical Engineering Journal, 353. pp. 218-224. ISSN 1385-8947 E-ISSN 1873-3212 https://www.sciencedirect.com/science/article/pii/S138589471831324X 10.1016/j.cej.2018.07.083
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	TP155 Chemical engineering
spellingShingle	TP155 Chemical engineering Mohd Nawi, Mohd Nazri Stuckey, David Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox
description	This study examined the pre-oxidation of ammonium using a nanofiltration (NF) hollow fiber membrane module to provide an alternative to conventional partial nitrification preceding Anammox. A permeability study showed that NF membranes were suitable for use in the pre-oxidation of ammonium due to high ammonium fluxes across the membrane (low rejection of ammonium), while most COD (in the form of glucose) was retained inside the bulk phase (high rejection of glucose-COD). In pre-oxidation, ammonium oxidizing bacteria (AOB) grown in the shell-side of the membrane module could oxidize the ammonium diffusing from the tube side mainly to nitrite, which then diffused back into the tube side, resulting in a mixture of ammonium and nitrite in the exit stream in an approximately equimolar ratio. This would meet the requirement for the Anammox process as suggested by previous reports. The application of a membrane process for the pre-oxidation of ammonium was found to be promising at a laboratory-scale, and practically viable at a scale similar to a full-scale reactor (Whitlingham STC, Norwich, UK) based on an estimate of the number of HF modules needed. However, a proper optimization study of the process is strongly recommended so that its feasibility could be further examined at a larger scale linking both nitritification and Anammox together.
format	Article
author	Mohd Nawi, Mohd Nazri Stuckey, David
author_facet	Mohd Nawi, Mohd Nazri Stuckey, David
author_sort	Mohd Nawi, Mohd Nazri
title	Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox
title_short	Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox
title_full	Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox
title_fullStr	Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox
title_full_unstemmed	Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox
title_sort	pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding anammox
publisher	Elsevier B.V.
publishDate	2018
url	http://irep.iium.edu.my/65159/ http://irep.iium.edu.my/65159/ http://irep.iium.edu.my/65159/ http://irep.iium.edu.my/65159/1/65159_Pre-oxidation%20of%20ammonium%20using%20nanofiltration.pdf http://irep.iium.edu.my/65159/2/65159_Pre-oxidation%20of%20ammonium%20using%20nanofiltration_SCOPUS.pdf http://irep.iium.edu.my/65159/13/65159%20Pre-oxidation%20of%20ammonium%20using%20nanofiltration%20membranes%20for%20partial%20WOS.pdf
first_indexed	2023-09-18T21:32:27Z
last_indexed	2023-09-18T21:32:27Z
_version_	1777412600936529920

Pre-oxidation of ammonium using nanofiltration membranes for partial nitrification preceding Anammox

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