Rapid removal of ammonium from domestic wastewater using polymer hydrogels
To date, technologies to recover ammonium from domestic wastewater from the mainstream have not found widespread application. This is largely due to the low ammonium concentrations in these wastewater streams. This paper reports on the use of polymer hydrogels for rapid sorption of ammonium from dom...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2018
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| Online Access: | https://hdl.handle.net/10356/87515 http://hdl.handle.net/10220/45409 |
| _version_ | 1826117864423161856 |
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| author | Cruz, Heidy Luckman, Paul Seviour, Thomas Verstraete, Willy Laycock, Bronwyn Pikaar, Ilje |
| author2 | Singapore Centre for Environmental Life Sciences Engineering |
| author_facet | Singapore Centre for Environmental Life Sciences Engineering Cruz, Heidy Luckman, Paul Seviour, Thomas Verstraete, Willy Laycock, Bronwyn Pikaar, Ilje |
| author_sort | Cruz, Heidy |
| collection | NTU |
| description | To date, technologies to recover ammonium from domestic wastewater from the mainstream have not found widespread application. This is largely due to the low ammonium concentrations in these wastewater streams. This paper reports on the use of polymer hydrogels for rapid sorption of ammonium from domestic wastewater coupled with efficient regeneration by mild acid washing. The sorption capacity of the hydrogel was 8.8–32.2 mg NH4–N/g, which corresponds to removal efficiencies ranging from 68% to 80% NH4–N, increasing proportionally with the initial ammonium concentration. It was, however, unaffected by changes in pH, as the sorption capacity remained constant from pH 5.0–8.0. Importantly, effective regeneration of the hydrogels under mildly acidic conditions (i.e. pH 4.0) was demonstrated with minimal loss in sorption performance following multiple sorption/desorption cycles. Overall, this study highlights the potential of low-cost polymer hydrogels for achieving mainstream ammonium recovery from domestic wastewater. |
| first_indexed | 2024-10-01T04:34:20Z |
| format | Journal Article |
| id | ntu-10356/87515 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:34:20Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/875152020-09-21T11:33:18Z Rapid removal of ammonium from domestic wastewater using polymer hydrogels Cruz, Heidy Luckman, Paul Seviour, Thomas Verstraete, Willy Laycock, Bronwyn Pikaar, Ilje Singapore Centre for Environmental Life Sciences Engineering Ammonium Recovery Polymer Hydrogels To date, technologies to recover ammonium from domestic wastewater from the mainstream have not found widespread application. This is largely due to the low ammonium concentrations in these wastewater streams. This paper reports on the use of polymer hydrogels for rapid sorption of ammonium from domestic wastewater coupled with efficient regeneration by mild acid washing. The sorption capacity of the hydrogel was 8.8–32.2 mg NH4–N/g, which corresponds to removal efficiencies ranging from 68% to 80% NH4–N, increasing proportionally with the initial ammonium concentration. It was, however, unaffected by changes in pH, as the sorption capacity remained constant from pH 5.0–8.0. Importantly, effective regeneration of the hydrogels under mildly acidic conditions (i.e. pH 4.0) was demonstrated with minimal loss in sorption performance following multiple sorption/desorption cycles. Overall, this study highlights the potential of low-cost polymer hydrogels for achieving mainstream ammonium recovery from domestic wastewater. Published version 2018-07-31T04:55:28Z 2019-12-06T16:43:32Z 2018-07-31T04:55:28Z 2019-12-06T16:43:32Z 2018 Journal Article Cruz, H., Luckman, P., Seviour, T., Verstraete, W., Laycock, B., & Pikaar, I. (2018). Rapid removal of ammonium from domestic wastewater using polymer hydrogels. Scientific Reports, 8(1), 2912-. 2045-2322 https://hdl.handle.net/10356/87515 http://hdl.handle.net/10220/45409 10.1038/s41598-018-21204-4 en Scientific Reports © 2018 The Author(s) (Nature Publishing Group). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. 6 p. application/pdf |
| spellingShingle | Ammonium Recovery Polymer Hydrogels Cruz, Heidy Luckman, Paul Seviour, Thomas Verstraete, Willy Laycock, Bronwyn Pikaar, Ilje Rapid removal of ammonium from domestic wastewater using polymer hydrogels |
| title | Rapid removal of ammonium from domestic wastewater using polymer hydrogels |
| title_full | Rapid removal of ammonium from domestic wastewater using polymer hydrogels |
| title_fullStr | Rapid removal of ammonium from domestic wastewater using polymer hydrogels |
| title_full_unstemmed | Rapid removal of ammonium from domestic wastewater using polymer hydrogels |
| title_short | Rapid removal of ammonium from domestic wastewater using polymer hydrogels |
| title_sort | rapid removal of ammonium from domestic wastewater using polymer hydrogels |
| topic | Ammonium Recovery Polymer Hydrogels |
| url | https://hdl.handle.net/10356/87515 http://hdl.handle.net/10220/45409 |
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