High capacity aqueous phosphate reclamation using Fe/Mg - layered double hydroxide (LDH) dispersed on biochar
Phosphate is a primary plant nutrient, serving integral role in environmental stability. Excessive phosphate in water causes eutrophication; hence, phosphate ions need to be harvested from soil nutrient levels and water and used efficiently. Fe-Mg (1:2) layered double hydroxides (LDH) were chemicall...
| Otros Autores: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2021rahman.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 024 | |a 10.1016/j.jcis.2021.03.114 | ||
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| 245 | 1 | |a High capacity aqueous phosphate reclamation using Fe/Mg - layered double hydroxide (LDH) dispersed on biochar | |
| 520 | |a Phosphate is a primary plant nutrient, serving integral role in environmental stability. Excessive phosphate in water causes eutrophication; hence, phosphate ions need to be harvested from soil nutrient levels and water and used efficiently. Fe-Mg (1:2) layered double hydroxides (LDH) were chemically co-precipitated and widely dispersed on a cheap, commercial Douglas fir biochar (695 m2 /g surface area and 0.26 cm3 /g pore volume) byproduct from syn gas production. This hybrid multiphase LDH dispersed on biochar (LDHBC) robustly adsorbed (~5h equilibrium) phosphate from aqueous solutions in exceptional sorption capacities and no pH dependence between pH 1–11. High phosphate Langmuir sorption capacities were found for both LDH (154 to 241 mg/g) and LDH-modified biochar (117 to 1589 mg/g). LDHBC was able to provide excellent sorption performance in the presence of nine competitive anion contaminants (CO 2/3- , As 3/4- , SeO2/4- , NO-3,Cr2O2/7, CI-F and Mo2/4) and also upon remediating natural eutrophic water samples. Regeneration was demonstrated by stripping with aqueous 1 M NaOH. No dramatic performance drop was observed over 3 sorption-stripping cycles for low concentrations (5 ppm). The adsorbents and phosphate - laden adsorbents were characterized using Elemental analysis, BET, PZC, TGA, DSC, XRD, SEM, TEM, and XPS. The primary sorption mechanism is ion-exchange from low to moderate concentrations (10–500 ppm). Chemisorption and stoichiometric phosphate compound formation were also considered at higher phosphate concentrations (>500 ppm) and at 40 C. This work advances the state of the art for environmentally friendly phosphate reclamation. These phosphate - laden adsorbents also have potential to be used as a slow - release phosphate fertilizer. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a LAYERED DOUBLE HYDROXIDE | ||
| 653 | |a PHOSPHATE | ||
| 653 | |a EUTROPHICATION | ||
| 653 | |a BIOCHAR | ||
| 653 | |a ADSORPTION | ||
| 700 | 1 | |a Rahman, M. Shafiur |u Mississippi State University. Department of Chemistry. Mississippi State, USA. |9 22237 | |
| 700 | 1 | |9 73848 |a Navarathna, Chanaka M. |u Mississippi State University. Department of Chemistry. Mississippi State, USA. | |
| 700 | 1 | |a Das, Naba Krishna |u Mississippi State University. Department of Chemistry. Mississippi State, USA. |9 73849 | |
| 700 | 1 | |9 37868 |a Alchouron, Jacinta |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Botánica General. Buenos Aires, Argentina. | |
| 700 | 1 | |a Reneau, Parker |u Louisiana Tech University. Department of Chemical Engineering. Ruston, USA. |9 73850 | |
| 700 | 1 | |a Stokes, Sean |u Mississippi State University. Department of Chemistry. Mississippi State, USA. |9 73851 | |
| 700 | 1 | |a Thirumalai, Rooban V. K. G. |u Mississippi State University. Institute of Imaging and Analytic Technology. Mississippi State, USA. |9 73852 | |
| 700 | 1 | |9 73853 |a Pérez, Felio |u University of Memphis. Material Science Lab. Integrated Microscopy Center. Memphis, USA. | |
| 773 | |t Journal of colloid and interface science |g Vol.597 (2021), p.182-195, il., tbls., fot. | ||
| 856 | |f 2021rahman |i en reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2021rahman.pdf |x ARTI202206 | ||
| 856 | |u https://www.elsevier.com/ |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||