- Tytuł:
- Removal of Ni(II) ions from aqueous solutions using manganese oxide nanoparticles from buffelgrass, Cenchrus ciliaris L., as green adsorbent. Kinetics and thermodynamic studies
- Autorzy:
-
Kiruba, Dunston Angeline
Muthukumaran, Karpagasundaram
Thamarai, Perumal - Powiązania:
- https://bibliotekanauki.pl/articles/2057616.pdf
- Data publikacji:
- 2022
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
Cenchrus ciliaris L.
ecosystem
Langmuir isotherm
Freundlich isotherm
heavy metals
ekosystem
izoterma Langmuira
izoterma Freundlicha
metale ciężkie - Opis:
- Manganese oxide nanoparticles (MnONPs) synthesized from buffelgrass, Cenchrus ciliaris (L.), an invasive weed posing threats to ecosystems, are used in this study to remove nickel(II) ions from aqueous solutions. As a biosorbent, the synthesized MnONPs were put to the test. MnONPs were studied for their surface morphology and functional properties. A variety of adsorbent dosages and contact times were tested in batch experiments to see how they affected adsorption rates. At pH 6.0 and room temperature, MnONPs had an 87.1% removal efficiency for Ni(II) ions. Pseudo-second order correlations had a higher R2 value (0.988). In the Langmuir plot, a maximum adsorption capacity of 4.78 mg/g was observed. However, the experimental data fitted well with both Langmuir and Freundlich isotherm models (R2 = 0.99). Spontaneous and exothermic was the nature of the adsorption process. To remove heavy metal ions contaminants from aqueous solutions, these results suggested that MnONPs synthesized from buffelgrass extract could be used.
- Źródło:
-
Environment Protection Engineering; 2022, 48, 1; 135--149
0324-8828 - Pojawia się w:
- Environment Protection Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł