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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/65159/1/65159_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
http://irep.iium.edu.my/65159/
https://www.sciencedirect.com/science/article/pii/S138589471831324X
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spelling my.iium.irep.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 https://www.sciencedirect.com/science/article/pii/S138589471831324X 10.1016/j.cej.2018.07.083
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
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/65159/1/65159_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
http://irep.iium.edu.my/65159/
https://www.sciencedirect.com/science/article/pii/S138589471831324X
_version_ 1643618995129024512
score 13.211869

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