TY - JOUR
T1 - Sargassummacroalgae from Quintana Roo as raw material for the preparation of high-performance phosphate adsorbent from aqueous solutions
AU - Hernández-Navarro, Carolina
AU - Pérez, Sebastián
AU - Flórez, Elizabeth
AU - Acelas, Nancy
AU - Muñoz-Saldaña, Juan
N1 - Funding Information:
Sebastián Pérez thanks the Mexican National Council for Humanities Science and Technology (CONAHCYT) for his Ph.D. scholarship with the number 1182859. C. Hernández-Navarro thanks CONACYT for the Postdoctoral Research Fellowship for the completion of this work. This project was carried out at CENAPROT National Laboratory. The authors are grateful for the facilities granted in the use of LIDTRA infrastructure, through the projects: LN295261, LN254119, and LN299082 as well as of CIDESI- Queretaro. Technical assistance in scanning electron microscopy of Liliana Naranjo and José Eleazar Urbina Álvarez; as well as to Orlando Cortázar-Martínez and Joaquín Raboño Borbolla for their technical assistance in XPS measures is highly appreciated. Nancy Acelas and Elizabeth Flórez thank Universidad de Medellín for the continuous support via internal projects.
Funding Information:
Sebastián Pérez thanks the Mexican National Council for Humanities Science and Technology ( CONAHCYT ) for his Ph.D. scholarship with the number 1182859 . C. Hernández-Navarro thanks CONACYT for the Postdoctoral Research Fellowship for the completion of this work. This project was carried out at CENAPROT National Laboratory. The authors are grateful for the facilities granted in the use of LIDTRA infrastructure, through the projects: LN295261, LN254119, and LN299082 as well as of CIDESI- Queretaro. Technical assistance in scanning electron microscopy of Liliana Naranjo and José Eleazar Urbina Álvarez; as well as to Orlando Cortázar-Martínez and Joaquín Raboño Borbolla for their technical assistance in XPS measures is highly appreciated. Nancy Acelas and Elizabeth Flórez thank Universidad de Medellín for the continuous support via internal projects.
Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/9/15
Y1 - 2023/9/15
N2 - Currently, the large volumes of Sargassum biomass (Sgs) arriving on Caribbean coasts are a problem that must be solved quickly. One alternative is to obtain value-added products from Sgs. In this work, Sgs is demonstrated to be a high-performance Ca - bioadsorbent for phosphate removal by a heat pretreatment at 800 °C that produces biochar. According to XRD analysis, calcined Sgs (CSgs) have a composition of 43.68%, 40.51%, and 8.69% of Ca(OH)2, CaCO3, and CaO, making CSgs a promising material for phosphate removal and recovery. Results demonstrated that CSgs have a high capacity to adsorb P over a wide range of concentrations (25–1000 mg P/L). After P removal, at low P concentration, the adsorbent material is rich in apatite (Ca5(PO4)3OH), and at high P concentration, brushite (CaHPO4•2H2O) was the main P compound. The CSg reached a Qmax of 224.58 mg P/g, which is higher than other high-performance adsorbents reported in the literature. The phosphate adsorption mechanism was dominated by chemisorption, followed by precipitation according to the pseudo-second-order kinetic model. The solubility of P (74.5 wt%) in formic acid solution and the water-soluble P (24.8 wt%) for CSgs after P adsorption indicated that the final product presents the potential to be used as fertilizer for acid soils. This biomass's processability and high phosphate adsorption performance for P removal make CSgs a potential material for wastewater treatment, and subsequent use of these residues as fertilizer offers a circular economy solution to this problem.
AB - Currently, the large volumes of Sargassum biomass (Sgs) arriving on Caribbean coasts are a problem that must be solved quickly. One alternative is to obtain value-added products from Sgs. In this work, Sgs is demonstrated to be a high-performance Ca - bioadsorbent for phosphate removal by a heat pretreatment at 800 °C that produces biochar. According to XRD analysis, calcined Sgs (CSgs) have a composition of 43.68%, 40.51%, and 8.69% of Ca(OH)2, CaCO3, and CaO, making CSgs a promising material for phosphate removal and recovery. Results demonstrated that CSgs have a high capacity to adsorb P over a wide range of concentrations (25–1000 mg P/L). After P removal, at low P concentration, the adsorbent material is rich in apatite (Ca5(PO4)3OH), and at high P concentration, brushite (CaHPO4•2H2O) was the main P compound. The CSg reached a Qmax of 224.58 mg P/g, which is higher than other high-performance adsorbents reported in the literature. The phosphate adsorption mechanism was dominated by chemisorption, followed by precipitation according to the pseudo-second-order kinetic model. The solubility of P (74.5 wt%) in formic acid solution and the water-soluble P (24.8 wt%) for CSgs after P adsorption indicated that the final product presents the potential to be used as fertilizer for acid soils. This biomass's processability and high phosphate adsorption performance for P removal make CSgs a potential material for wastewater treatment, and subsequent use of these residues as fertilizer offers a circular economy solution to this problem.
KW - Adsorption
KW - Calcium phosphate
KW - Circular economy
KW - Sargassum macroalgae
KW - Wastewater
UR - http://www.scopus.com/inward/record.url?scp=85160730778&partnerID=8YFLogxK
U2 - 10.1016/j.jenvman.2023.118312
DO - 10.1016/j.jenvman.2023.118312
M3 - Artículo
AN - SCOPUS:85160730778
SN - 0301-4797
VL - 342
JO - Journal of Environmental Management
JF - Journal of Environmental Management
M1 - 118312
ER -
