| Title |
Fertilization with Municipal Wastewater Phosphorus Adsorbed to Alginate Beads: Results from a Pot Experiment with Italian Ryegrass |
| ID_Doc |
9635 |
| Authors |
Pawelec, K; Siwek, H; Kitczak, T; Wlodarczyk, M |
| Title |
Fertilization with Municipal Wastewater Phosphorus Adsorbed to Alginate Beads: Results from a Pot Experiment with Italian Ryegrass |
| Year |
2021 |
| Published |
Agronomy-Basel, 11.0, 11 |
| DOI |
10.3390/agronomy11112142 |
| Abstract |
The global increase in the demand for fertilizers and thus phosphorus (P) contributes to the depletion of P reserves and the need to recycle this element. This paper presents the results of a pilot-scale experiment on the possibility of using a fertilizer preparation containing alginate, Fe and P (AFP) obtained in the process of P adsorption from sludge water on a hydrogel alginate adsorbent cross-linked with iron (III) ions. The influence of AFP on the growth of a model plant of the Italian ryegrass (Lolium perenne cv. Turtetra) was examined in comparison with differentiated mineral fertilization (MF) under the conditions of a pot experiment. The two fertilizers produced similar crop yields of the tested plant and had similar plant and soil macro- and micro-elements, except for the content of Fe and Cu in ryegrass, which was significantly higher with AFP fertilization. Further research on the use of the proposed sorbent for large-scale P recycling in an uncontrolled field environment should include acceptable limits for multivalent metal concentrations in wastewater, the mechanical/thermal stability, and the effectiveness of AFP under field conditions and a cost competitiveness. AFP has the potential to compete with mineral fertilizers for P fertilization, and this technology is in line with the EU circular economy vision. |
| Author Keywords |
phosphorus removal; wastewater; alginate adsorbents; fertilizer formulation; multivalent metals |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000725784600001 |
| WoS Category |
Agronomy; Plant Sciences |
| Research Area |
Agriculture; Plant Sciences |
| PDF |
https://www.mdpi.com/2073-4395/11/11/2142/pdf?version=1635244663
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