Superior residual fertiliser value in soil with phosphorus recycled from urine in layered double hydroxides
Abstract Layered double hydroxides (LDHs) of magnesium (Mg) and aluminium (Al) are ion exchangers that can be used as slow release phosphorus (P) fertilisers. These LDHs can be used successfully to concentrate P from waste streams such as urine. This study was set up to test the fertiliser potential...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-05-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-11892-4 |
| _version_ | 1811341036534890496 |
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| author | K. Dox T. Martin S. Houot R. Merckx E. Smolders |
| author_facet | K. Dox T. Martin S. Houot R. Merckx E. Smolders |
| author_sort | K. Dox |
| collection | DOAJ |
| description | Abstract Layered double hydroxides (LDHs) of magnesium (Mg) and aluminium (Al) are ion exchangers that can be used as slow release phosphorus (P) fertilisers. These LDHs can be used successfully to concentrate P from waste streams such as urine. This study was set up to test the fertiliser potential of P derived from urine and concentrated on LDHs. Ryegrass was grown in a pot trial using a P- and N-deficient soil where different urine derived fertilisers, i.e. LDH-P, stored urine and urine mixed with sludge as a source of P were compared to different mineral N and P doses in a full factorial design. Plants were grown for 75 days with four cuttings and did not exhibit salinity stress in stored urine treatments. Plant growth and P uptake responded to N, P doses in mineral fertilizer treatments with significant N-P interaction. The fertiliser use efficiency of urine fertilisers was lower than that of mineral fertilisers at equivalent total nutrient input for stored urine, due to lower N availability, and for urine mixed with sludge due to lower P availability. In contrast, the yield and P uptake of ryegrass grown on LDH loaded with P from urine (LDH-P) showed equal fertiliser P use as mineral fertiliser. Interestingly, the residual soil P after harvest, scored by the sum of isotopically exchangeable P in soil and the P uptake, was higher for LDH-P than for mineral P, confirming slow release properties of LDH that limit loss of P by fixation in soil. |
| first_indexed | 2024-04-13T18:50:47Z |
| format | Article |
| id | doaj.art-3ae602e09b5443e4a4875dd2583711f2 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-13T18:50:47Z |
| publishDate | 2022-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-3ae602e09b5443e4a4875dd2583711f22022-12-22T02:34:25ZengNature PortfolioScientific Reports2045-23222022-05-011211910.1038/s41598-022-11892-4Superior residual fertiliser value in soil with phosphorus recycled from urine in layered double hydroxidesK. Dox0T. Martin1S. Houot2R. Merckx3E. Smolders4Division of Soil and Water Management, Department of Earth and Environmental Science, KU LeuvenUMR ECOSYS, INRAE, AgroParisTech, Université Paris-SaclayUMR ECOSYS, INRAE, AgroParisTech, Université Paris-SaclayDivision of Soil and Water Management, Department of Earth and Environmental Science, KU LeuvenDivision of Soil and Water Management, Department of Earth and Environmental Science, KU LeuvenAbstract Layered double hydroxides (LDHs) of magnesium (Mg) and aluminium (Al) are ion exchangers that can be used as slow release phosphorus (P) fertilisers. These LDHs can be used successfully to concentrate P from waste streams such as urine. This study was set up to test the fertiliser potential of P derived from urine and concentrated on LDHs. Ryegrass was grown in a pot trial using a P- and N-deficient soil where different urine derived fertilisers, i.e. LDH-P, stored urine and urine mixed with sludge as a source of P were compared to different mineral N and P doses in a full factorial design. Plants were grown for 75 days with four cuttings and did not exhibit salinity stress in stored urine treatments. Plant growth and P uptake responded to N, P doses in mineral fertilizer treatments with significant N-P interaction. The fertiliser use efficiency of urine fertilisers was lower than that of mineral fertilisers at equivalent total nutrient input for stored urine, due to lower N availability, and for urine mixed with sludge due to lower P availability. In contrast, the yield and P uptake of ryegrass grown on LDH loaded with P from urine (LDH-P) showed equal fertiliser P use as mineral fertiliser. Interestingly, the residual soil P after harvest, scored by the sum of isotopically exchangeable P in soil and the P uptake, was higher for LDH-P than for mineral P, confirming slow release properties of LDH that limit loss of P by fixation in soil.https://doi.org/10.1038/s41598-022-11892-4 |
| spellingShingle | K. Dox T. Martin S. Houot R. Merckx E. Smolders Superior residual fertiliser value in soil with phosphorus recycled from urine in layered double hydroxides Scientific Reports |
| title | Superior residual fertiliser value in soil with phosphorus recycled from urine in layered double hydroxides |
| title_full | Superior residual fertiliser value in soil with phosphorus recycled from urine in layered double hydroxides |
| title_fullStr | Superior residual fertiliser value in soil with phosphorus recycled from urine in layered double hydroxides |
| title_full_unstemmed | Superior residual fertiliser value in soil with phosphorus recycled from urine in layered double hydroxides |
| title_short | Superior residual fertiliser value in soil with phosphorus recycled from urine in layered double hydroxides |
| title_sort | superior residual fertiliser value in soil with phosphorus recycled from urine in layered double hydroxides |
| url | https://doi.org/10.1038/s41598-022-11892-4 |
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