Transforming desalination brine into highly reactive magnesium oxide and life cycle analysis
The sustainable production of magnesium oxide (MgO) from reject brine at a desalination facility in Singapore presents a promising alternative to traditional building materials. This study investigates the properties and extraction methods of MgO derived from reject brine, focusing on environmental...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | Watershed Ecology and the Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589471425000014 |
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| author | Hasanthi L. Senevirathna W.P. Cathie Lee Shunnian Wu Kewu Bai Ping Wu |
| author_facet | Hasanthi L. Senevirathna W.P. Cathie Lee Shunnian Wu Kewu Bai Ping Wu |
| author_sort | Hasanthi L. Senevirathna |
| collection | DOAJ |
| description | The sustainable production of magnesium oxide (MgO) from reject brine at a desalination facility in Singapore presents a promising alternative to traditional building materials. This study investigates the properties and extraction methods of MgO derived from reject brine, focusing on environmental sustainability and resource efficiency. By utilizing a combination of thermodynamic modelling of concentrated salt aqueous solutions and experimental validation, we optimized the recovery process for Mg2+ from reject brine, achieving an impressive 99 % recovery rate to produce MgO with ∼ 98 % purity. The MgO produced, calcined at 700 °C, exhibits high reactivity and a large surface area of 58.01 m2/g, making it a highly viable option for various industrial applications. This approach addresses reject brine disposal challenges and emphasizes brine valorization, aligning with strict environmental regulations by treating both freshwater and concentrated brine as valuable products. The technology enables cost-effective reject brine treatment by recycling Mg2+ to produce sustainable Mg-based materials. A comprehensive Life Cycle Assessment (LCA) was conducted to evaluate the environmental impact of MgO production from reject brine. This analysis provides a thorough examination of the transformation process, assessing the sustainability of employing MgO in commercial applications. The findings of this study offer valuable insights for enhancing sustainability in various sectors, underscoring the promise of MgO as an environmentally friendly and cost-effective material. |
| format | Article |
| id | doaj-art-b2b7e67758524f08ac56d7b6cc497874 |
| institution | Kabale University |
| issn | 2589-4714 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Watershed Ecology and the Environment |
| spelling | doaj-art-b2b7e67758524f08ac56d7b6cc4978742025-01-26T05:04:36ZengKeAi Communications Co., Ltd.Watershed Ecology and the Environment2589-47142025-01-0173646Transforming desalination brine into highly reactive magnesium oxide and life cycle analysisHasanthi L. Senevirathna0W.P. Cathie Lee1Shunnian Wu2Kewu Bai3Ping Wu4Entropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road 487372 SingaporeEntropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road 487372 SingaporeEntropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road 487372 SingaporeInstitute of High-Performance Computing, Agency for Science, Technology and Research, Fusionopolis Way, #16-16 Connexis 138632 SingaporeEntropic Interface Group, Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road 487372 Singapore; Corresponding author.The sustainable production of magnesium oxide (MgO) from reject brine at a desalination facility in Singapore presents a promising alternative to traditional building materials. This study investigates the properties and extraction methods of MgO derived from reject brine, focusing on environmental sustainability and resource efficiency. By utilizing a combination of thermodynamic modelling of concentrated salt aqueous solutions and experimental validation, we optimized the recovery process for Mg2+ from reject brine, achieving an impressive 99 % recovery rate to produce MgO with ∼ 98 % purity. The MgO produced, calcined at 700 °C, exhibits high reactivity and a large surface area of 58.01 m2/g, making it a highly viable option for various industrial applications. This approach addresses reject brine disposal challenges and emphasizes brine valorization, aligning with strict environmental regulations by treating both freshwater and concentrated brine as valuable products. The technology enables cost-effective reject brine treatment by recycling Mg2+ to produce sustainable Mg-based materials. A comprehensive Life Cycle Assessment (LCA) was conducted to evaluate the environmental impact of MgO production from reject brine. This analysis provides a thorough examination of the transformation process, assessing the sustainability of employing MgO in commercial applications. The findings of this study offer valuable insights for enhancing sustainability in various sectors, underscoring the promise of MgO as an environmentally friendly and cost-effective material.http://www.sciencedirect.com/science/article/pii/S2589471425000014Reject brineCO2 emissionReactivitySolution modelMgO |
| spellingShingle | Hasanthi L. Senevirathna W.P. Cathie Lee Shunnian Wu Kewu Bai Ping Wu Transforming desalination brine into highly reactive magnesium oxide and life cycle analysis Watershed Ecology and the Environment Reject brine CO2 emission Reactivity Solution model MgO |
| title | Transforming desalination brine into highly reactive magnesium oxide and life cycle analysis |
| title_full | Transforming desalination brine into highly reactive magnesium oxide and life cycle analysis |
| title_fullStr | Transforming desalination brine into highly reactive magnesium oxide and life cycle analysis |
| title_full_unstemmed | Transforming desalination brine into highly reactive magnesium oxide and life cycle analysis |
| title_short | Transforming desalination brine into highly reactive magnesium oxide and life cycle analysis |
| title_sort | transforming desalination brine into highly reactive magnesium oxide and life cycle analysis |
| topic | Reject brine CO2 emission Reactivity Solution model MgO |
| url | http://www.sciencedirect.com/science/article/pii/S2589471425000014 |
| work_keys_str_mv | AT hasanthilsenevirathna transformingdesalinationbrineintohighlyreactivemagnesiumoxideandlifecycleanalysis AT wpcathielee transformingdesalinationbrineintohighlyreactivemagnesiumoxideandlifecycleanalysis AT shunnianwu transformingdesalinationbrineintohighlyreactivemagnesiumoxideandlifecycleanalysis AT kewubai transformingdesalinationbrineintohighlyreactivemagnesiumoxideandlifecycleanalysis AT pingwu transformingdesalinationbrineintohighlyreactivemagnesiumoxideandlifecycleanalysis |