Data/hora: 04/06/2024 21:49:58

Biblioteca(s): | Embrapa Solos.
Data corrente: | 12/05/2023
Data da última atualização: | 24/07/2023
Autoria: | VENEU, D. M.; SILVA, G. G. A.; NASCENTES, A. L.; MAUAD, C. R.; YOKOYAMA, L.; MONTE, M. B. de M.; CAMPOS, D. V. B. de.
Afiliação: | DIEGO MACEDO VENEU, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; GABRIEL GONÇALVES AMARAL SILVA, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DO RIO DE JANEIRO; ALEXANDRE LIOI NASCENTES, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; CRISTIANE RIBEIRO MAUAD, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DO RIO DE JANEIRO; LÍDIA YOKOYAMA, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; MARISA BEZERRA DE MELLO MONTE, CENTRO DE TECNOLOGIA MINERAL; DAVID VILAS BOAS DE CAMPOS, CNPS.
Título: | Phosphorus recovery from aqueous solutions using Bioclastic Granules (Lithothamnium calcareum).
Ano de publicação: | 2023
Fonte/Imprenta: | Environmental Science and Pollution Research, v. 30, p. 71270-71283, 2023.
DOI: | https://doi.org/10.1007/s11356-023-27365-8
Idioma: | Inglês
Conteúdo: | Against the growing world demand for food and the possibility of recovering some nutrients, this work focused on the evaluation of the use of Bioclastic Granules (BG) from the algae Lithothamnium calcareum as sorbent material for the removal/recovery of phosphorus from aqueous solutions. The main variables that affect the sorption process, pH, initial concentration of phosphate, and GB, as well as the contact time, were evaluated. The effect of pH was very significant, obtaining the best results of PO43- removal at pH 5. In the coarser granulometric fractions (+ 106 - 150 and + 210 - 300 um), the best removals were observed (around 75%). Regarding the initial PO43- concentration in the solutions, the highest removal (in the range of 74 to 78%) was observed in the lowest concentrations (5 to 70 mg L-1) and the best uptake (10 to 14 mg g-1) at higher concentrations (200 to 420 mg L-1). The PO43- sorption data fitted the Freundlich model well, with kF of 1.35 L mg-1 and n of 2.43. A qmax of 14.35 mg g-1 was obtained using the Langmuir model. Regarding the sorption data over time, a better fit to the pseudo-first-order kinetic model was observed, obtaining a calculated qeq of 6.56 mg g-1 and a k1 of 0.0073 min-1. The incorporation of PO43- ions in the GB structure was confirmed through the characterization results before and after the sorption experiments using X-ray fluorescence (FRX) and scanning electron microscopy (SEM) techniques.
Palavras-Chave: | Calcareous algae; Nutrient recovery; Sorption process.
Thesaurus Nal: | Wastewater treatment.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Solos (CNPS)
Exemplares: | CNPS - (21282-1) - UPC - AP - DD -  -  -  - DIS