Plant uptake of phosphorus and nitrogen recycled from synthetic source-separated urine |
| |
Authors: | Christophe Bonvin Bastian Etter Kai M Udert Emmanuel Frossard Simone Nanzer Federica Tamburini Astrid Oberson |
| |
Institution: | 1.Group of Plant Nutrition, Research Station Eschikon, Institute of Agricultural Sciences,ETH Zurich,Lindau,Switzerland;2.Eawag, Swiss Federal Institute of Aquatic Science and Technology (PSI),Dübendorf,Switzerland;3.Paul Scherrer Institut,Villigen,Switzerland |
| |
Abstract: | Urine contains about 50 % of the phosphorus (P) and about 90 % of the nitrogen (N) excreted by humans and is therefore an interesting substrate for nutrient recovery. Source-separated urine can be used to precipitate struvite or, through a newly developed technology, nitrified urine fertilizer (NUF). In this study, we prepared 33P radioisotope- and stable 15N isotope-labeled synthetic NUF (SNUF) and struvite using synthetic urine and determined P and N uptake by greenhouse-grown ryegrass (Lolium multiflorum var. Gemini) fertilized with these products. The P and N in the urine-based fertilizers were as readily plant-available in a slightly acidic soil as the P and N in reference mineral fertilizers. The ryegrass crop recovered 26 % of P applied with both urine-based fertilizers and 72 and 75 % of N applied as struvite and SNUF, respectively. Thus, NUF and urine-derived struvite are valuable N and P recycling fertilizers. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|