Layered double hydroxides, an effective nanomaterial to remove phosphorus from wastewater: Performance, mechanism, factors and reusability
Article
Feng, W., Cui, H., Zhu, H., Shutes, B., Yan, B. and Hou, S. 2023. Layered double hydroxides, an effective nanomaterial to remove phosphorus from wastewater: Performance, mechanism, factors and reusability. Science of the Total Environment. 884. https://doi.org/10.1016/j.scitotenv.2023.163757
| Type | Article |
|---|---|
| Title | Layered double hydroxides, an effective nanomaterial to remove phosphorus from wastewater: Performance, mechanism, factors and reusability |
| Authors | Feng, W., Cui, H., Zhu, H., Shutes, B., Yan, B. and Hou, S. |
| Abstract | Systematic understanding of phosphorus adsorption performance, mechanism, factors and reusability of layered double hydroxides (LDH) remains limited. Thus, iron (Fe), calcium (Ca) and magnesium (Mg)-based LDH (FeCa-LDH and FeMg-LDH), were synthesized with a co-precipitation method to improve phosphorus removal efficiency during the wastewater treatment process. Both FeCa-LDH and FeMg-LDH showed a considerable ability to remove phosphorus in wastewater. When the phosphorus concentration was 10 mg/L, the removal efficiency reached 99 % (FeCa-LDH: 1 min) and 82 % (FeMg-LDH: 10 min), respectively. The phosphorus removal mechanism was observed to be electrostatic adsorption, coordination reaction and anionic exchange, which was more evident at pH = 10 for FeCa-LDH. Co-occurrence anions that affected phosphorus removal efficiency, were observed in the following order: HCO > CO ≈ NO > SO . After five adsorption-desorption cycles, phosphorus removal efficiency was still up to 85 % (FeCa-LDH) and 42 % (FeMg-LDH), respectively. Together, the present findings suggest that LDHs were high-performance, strongly-stable and reusable phosphorus adsorbents. |
| Keywords | FeMg-LDH, Wastewater, Nanomaterials, Phosphorus, FeCa-LDH |
| Sustainable Development Goals | 6 Clean water and sanitation |
| Middlesex University Theme | Sustainability |
| Publisher | Elsevier |
| Journal | Science of the Total Environment |
| ISSN | 0048-9697 |
| Publication dates | |
| Online | 02 May 2023 |
| 01 Aug 2023 | |
| Publication process dates | |
| Deposited | 25 May 2023 |
| Submitted | 24 Feb 2023 |
| Accepted | 23 Apr 2023 |
| Output status | Published |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.scitotenv.2023.163757 |
| Language | English |
https://repository.mdx.ac.uk/item/8q620
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