Online monitoring of transparent exopolymer particles (TEP) by a novel membrane-based spectrophotometric method
The presence of transparent exopolymer particles (TEP) in water bodies has been related to several adverse impacts in various water treatment processes. In recent years, there have been an increasing number of publications relating to TEP. Unfortunately, this increased interest in TEP measurement ha...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/150710 |
| _version_ | 1811695396497391616 |
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| author | Sim, Lee Nuang Suwarno, Stanislaus Raditya Lee, Darren Yong Shern Cornelissen, Emile R. Fane, Anthony Gordon Chong, Tzyy Haur |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Sim, Lee Nuang Suwarno, Stanislaus Raditya Lee, Darren Yong Shern Cornelissen, Emile R. Fane, Anthony Gordon Chong, Tzyy Haur |
| author_sort | Sim, Lee Nuang |
| collection | NTU |
| description | The presence of transparent exopolymer particles (TEP) in water bodies has been related to several adverse impacts in various water treatment processes. In recent years, there have been an increasing number of publications relating to TEP. Unfortunately, this increased interest in TEP measurement has not been accompanied by significant improvement in the analysis method or TEP monitoring. Currently, the most common method to analyze and quantify TEP only allows offline, and often offsite measurement, causing delays and slow response times. This paper introduces an improved method for TEP monitoring using a membrane-based spectrophotometric technique to quantify TEP in various water bodies. The proposed TEP monitor involves a crossflow filtration unit, reagent injection and a spectrophotometer system. The TEP retained on the membrane surface is stained by Alcian blue and the amount deposited is quantified directly using an optic fibre reflectance probe coupled with a spectrophotometer. The novel method shows a linear relationship with various concentrations of Xanthan gum (a model representing TEP). When tested with various water samples, the proposed method was found to correlate well with the conventional method. Several advantages of this novel method are shorter analysis time, increased accuracy, and the potential to be further developed into an online system. |
| first_indexed | 2024-10-01T07:22:48Z |
| format | Journal Article |
| id | ntu-10356/150710 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:22:48Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1507102021-06-08T02:11:43Z Online monitoring of transparent exopolymer particles (TEP) by a novel membrane-based spectrophotometric method Sim, Lee Nuang Suwarno, Stanislaus Raditya Lee, Darren Yong Shern Cornelissen, Emile R. Fane, Anthony Gordon Chong, Tzyy Haur School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Engineering::Environmental engineering Transparent Exopolymer Particles Alcian Blue The presence of transparent exopolymer particles (TEP) in water bodies has been related to several adverse impacts in various water treatment processes. In recent years, there have been an increasing number of publications relating to TEP. Unfortunately, this increased interest in TEP measurement has not been accompanied by significant improvement in the analysis method or TEP monitoring. Currently, the most common method to analyze and quantify TEP only allows offline, and often offsite measurement, causing delays and slow response times. This paper introduces an improved method for TEP monitoring using a membrane-based spectrophotometric technique to quantify TEP in various water bodies. The proposed TEP monitor involves a crossflow filtration unit, reagent injection and a spectrophotometer system. The TEP retained on the membrane surface is stained by Alcian blue and the amount deposited is quantified directly using an optic fibre reflectance probe coupled with a spectrophotometer. The novel method shows a linear relationship with various concentrations of Xanthan gum (a model representing TEP). When tested with various water samples, the proposed method was found to correlate well with the conventional method. Several advantages of this novel method are shorter analysis time, increased accuracy, and the potential to be further developed into an online system. Economic Development Board (EDB) Singapore Membrane Technology Center (SMTC) is supported by the Economic Development Board - Singapore of Singapore. 2021-06-08T02:11:43Z 2021-06-08T02:11:43Z 2019 Journal Article Sim, L. N., Suwarno, S. R., Lee, D. Y. S., Cornelissen, E. R., Fane, A. G. & Chong, T. H. (2019). Online monitoring of transparent exopolymer particles (TEP) by a novel membrane-based spectrophotometric method. Chemosphere, 220, 107-115. https://dx.doi.org/10.1016/j.chemosphere.2018.12.066 0045-6535 0000-0002-6353-0397 0000-0002-1387-7464 https://hdl.handle.net/10356/150710 10.1016/j.chemosphere.2018.12.066 30579947 2-s2.0-85058945836 220 107 115 en Chemosphere © 2018 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Transparent Exopolymer Particles Alcian Blue Sim, Lee Nuang Suwarno, Stanislaus Raditya Lee, Darren Yong Shern Cornelissen, Emile R. Fane, Anthony Gordon Chong, Tzyy Haur Online monitoring of transparent exopolymer particles (TEP) by a novel membrane-based spectrophotometric method |
| title | Online monitoring of transparent exopolymer particles (TEP) by a novel membrane-based spectrophotometric method |
| title_full | Online monitoring of transparent exopolymer particles (TEP) by a novel membrane-based spectrophotometric method |
| title_fullStr | Online monitoring of transparent exopolymer particles (TEP) by a novel membrane-based spectrophotometric method |
| title_full_unstemmed | Online monitoring of transparent exopolymer particles (TEP) by a novel membrane-based spectrophotometric method |
| title_short | Online monitoring of transparent exopolymer particles (TEP) by a novel membrane-based spectrophotometric method |
| title_sort | online monitoring of transparent exopolymer particles tep by a novel membrane based spectrophotometric method |
| topic | Engineering::Environmental engineering Transparent Exopolymer Particles Alcian Blue |
| url | https://hdl.handle.net/10356/150710 |
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