| Title |
Phosphorus Recovery from Wastewater: Bioavailability of P Bound to Calcareous Material for Maize (Zea Mays L.) Growth |
| ID_Doc |
7244 |
| Authors |
Jensen, SM; Esposito, C; Konnerup, D; Brix, H; Arias, CA |
| Title |
Phosphorus Recovery from Wastewater: Bioavailability of P Bound to Calcareous Material for Maize (Zea Mays L.) Growth |
| Year |
2021 |
| Published |
Recycling, 6, 2 |
| DOI |
10.3390/recycling6020025 |
| Abstract |
(1) Phosphorus (P) is an essential plant nutrient, and P deficiency negatively affects plant growth and development. Furthermore, P is a finite and nonrenewable resource, and there is an urgent need to recover P from some of the important waste streams in society. Newly engineered calcareous materials (sol-gel coated cat litter (CATSAN(R))) can bind P from wastewater in decentralized treatment systems and potentially enable P recycling into agricultural production by direct addition of the P saturated material. (2) The effects of the addition of two P-enriched calcareous materials as fertilizers for maize (Zea mays L.) growth were investigated in a mesocosm experiment. We compared fertilization with the P-enriched materials at rates of 6, 12, 25, 50, 100 kg P ha(-1) yr(-1) with fertilization with commercial NPK fertilizer. (3) The P fertilization by the P-enriched materials had a significant positive effect on plant height, biomass, maximum light-saturated photosynthetic rate, respiration rate, and total P content in biomass. However, plants fertilized by the commercial NPK fertilizer performed significantly better in the majority of measured parameters at identical fertilization rates. (4) The bioavailability of the P bound to the calcareous material was very low. However, the studied material has the potential to be used as part of a decentralized treatment solution to remove and subsequently recover and recycle P from wastewater. |
| Author Keywords |
phosphorus recovery; P sorption; P bioavailability; calcareous material; circular economy; wastewater; treatment wetlands (TWs); constructed wetlands (CWs) |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Emerging Sources Citation Index (ESCI) |
| EID |
WOS:000722338900001 |
| WoS Category |
Green & Sustainable Science & Technology |
| Research Area |
Science & Technology - Other Topics |
| PDF |
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