| Autor: |
Jellali, Salah, Hadroug, Samar, Al-Wardy, Malik, Hamdi, Helmi, Al-Sabahi, Jamal, Zorpas, Antonis, Hamdi, Wissem, Al-Raeesi, Ahmed, Jeguirim, Mejdi |
| Zdroj: |
Biomass Conversion and Biorefinery; 20240101, Issue: Preprints p1-16, 16p |
| Abstrakt: |
In the current work, a Mg/Al-modified biochar from date palm wastes (Mg/Al-DPF-B) was synthesized, characterized, and applied for phosphorus (P) recovery from aqueous solutions in column mode. The P recovery was assessed for various P initial concentrations (25–100 mg L−1), feeding flow rates (9–27 mL min−1), and biochar masses (3–8 g). Biochar characterization shows that the structural, textural, and surface chemistry properties of the biochar were significantly enhanced due to the high-deposition loads of magnesium oxides (MgO), magnesium hydroxides (Mg(OH)2), and aluminum oxides (Al2O3) nanoparticles on its surface. The column experiment results indicate that the P breakthrough curve shape (BTCs) and performance are highly influenced by the biochar mass and the highest adsorbed amount (7.0 mg g−1) corresponds to a mass of 8 g. Moreover, the experimental BTCs align well with predictions by Thomas and Yoon-Nielson models. The P recovery process involves a combination of surface complexation and precipitation as magnesium and/or aluminum phosphates. The scale-up design considerations indicate that a large-scale column having a diameter and a height of 211 and 50 cm, respectively, can effectively treat 116 m3of real wastewater achieving a P recovery rate of more than 0.5 kg P day−1. |
| Databáze: |
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