Magnetic Steel Slag Biochar for Ammonium Nitrogen Removal from Aqueous Solution

Magnetic Steel Slag Biochar for Ammonium Nitrogen Removal from Aqueous Solution

In this study, magnetic steel slag biochar (MSSB) was synthesized from low-cost steel slag waste to investigate the effectiveness of steel slag biochar composite for NH4-N removal and magnetic properties in aqueous solution. The maximum adsorption capacity of NH4-N by MSSB was 4.366 mg/g according t...

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Veröffentlicht in:Energies (Basel) 2021-05, Vol.14 (9), p.2682
Hauptverfasser: Kim, Gyuhyeon, Kim, Young, Kim, Su, Cho, Hyun, Park, Jong
Format: Artikel
Sprache:eng
Schlagworte:
Adsorbents
Adsorption
Ammonium
ammonium nitrogen
Aqueous solutions
Biomass
Charcoal
Crystal structure
Equilibrium
Fertilizers
magnetic biochar
Magnetic moments
Magnetic properties
Morphology
Nitrogen
Nitrogen removal
Pollutants
Slag
Spectrum analysis
Steel
steel slag
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Beschreibung
Zusammenfassung:In this study, magnetic steel slag biochar (MSSB) was synthesized from low-cost steel slag waste to investigate the effectiveness of steel slag biochar composite for NH4-N removal and magnetic properties in aqueous solution. The maximum adsorption capacity of NH4-N by MSSB was 4.366 mg/g according to the Langmuir model. The magnetic properties of MSSB indicated paramagnetic behavior and a saturation magnetic moment of 2.30 emu/g at 2 Tesla. The NH4-N adsorption process was well characterized by the pseudo-second order kinetic model and Temkin isotherm model. This study demonstrated the potential of magnetic biochar synthesized from steel slag waste for NH4-N removal in aqueous solution.
ISSN:1996-1073
1996-1073
DOI:10.3390/en14092682