| Full text | |
| Author(s): |
Nunes, Renan S.
;
Xavier, Gabriela T. M.
;
Urzedo, Alessandro L.
;
Fadini, Pedro S.
;
Romeiro, Marcio
;
Carvalho, Wagner A.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | NEXT SUSTAINABILITY; v. 5, p. 10-pg., 2024-12-03. |
| Abstract | |
Phosphorus uptake and recovery from sanitary wastewater have been considered a promising approach to producing more sustainable fertilizers, in addition to reducing environmental damage caused by the discharge of this nutrient into water streams. In this study, the Phosphorus adsorption/desorption dynamics exhibited by a tailored SiO2@FeOOH adsorbent, produced using quartz sand waste and Fe derived from the acid dissolution of scrap iron, were examined. The adsorbent's behavior, robustness, and interaction with Ca2+ ions in simulated treated sanitary wastewater were systematically investigated. As a result, the behavior of the adsorbent under controlled conditions was successfully modeled, and relevant interactions between the material and Ca2+ ions were identified under simulated conditions. The performance of the adsorbent was not affected by the presence of nitrate, carbonate, sulfate, ammonium, fluoride, and humic substances in the simulated media. Additionally, the composite can adsorb humic substances and Phosphorus simultaneously, without interfering with its Phosphorus adsorption capacity. In simulated treated wastewater, the adsorption of the nutrient was enhanced in the presence of Ca2+; however, the formation of insoluble Ca/P deposits on the adsorbent surface significantly changed the adsorption dynamics and disturbed the recovery of Phosphorus using the usual alkaline desorption method. The adsorbent exhibited a robust Phosphorus adsorption capacity as high as 40 mg P/g in simulated treated wastewater, showing clear potential for Phosphorus uptake in Wastewater Treatment Plants. Based on the experimental evidence, future perspectives on the final disposal of the spent adsorbent were also discussed within a circular economy framework. (AU) | |
| FAPESP's process: | 23/17516-1 - Production of Selective Adsorbents for the Removal of Nutrients from Sewage Treatment Effluents with the Perspective of Reuse as Biofertilizer |
| Grantee: | Wagner Alves Carvalho |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 23/01634-5 - Metal-Organic Frameworks (MOFs) as catalysts for sustainable oxidation of hydrocarbons derived from petroleum (methane and other alkanes) and natural (terpenes) |
| Grantee: | Dalmo Mandelli |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products |
| Grantee: | José Maria Correa Bueno |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 23/13334-6 - Metal-organic frameworks (MOFs) as catalysts for sustainable oxidation of hydrocarbons derived from petroleum (methane and other alkanes) and natural (terpenes) |
| Grantee: | Gabriela Tuono Martins Xavier |
| Support Opportunities: | Scholarships in Brazil - Support Program for Fixating Young Doctors |