| Autor: |
Koli, Amruta, Dhabbe, Rohant, Shen, Jian, Motkuri, Radha Kishan, Sabale, Sandip |
| Zdroj: |
Biomass Conversion & Biorefinery; Aug2024, Vol. 14 Issue 16, p18789-18801, 13p |
| Abstrakt: |
In the present work, we used an eco-friendly, simple, and selective nitrogen (N2) activation strategy for the preparation of hierarchical porous activated carbon (HPAC) derived from abundant and low-cost Terminalia catappa shell (TCS) agro-waste. The effect of N2 activation strategy compared to air activation is studied where the N2 activated carbon (HPAC) showed enhancement in the specific surface area (SSA) (616.04 m2 g−1) as compared to air activated carbon (HPC) which showed 243.97 m2 g−1. Both activated carbons were further explored for CO2 capture studies and showed a relatively high capacity (2.73 mmol g−1) for HPAC than HPC (1.70 mmol g−1) at 288 K. The low N2 capture capacity (0.22 mmol g−1) of HPAC suggests its selectivity toward CO2 (41.80 at 288 K) is useful for gas separation. Obtained HPAC was successfully applied for adsorption removal of methyl orange (MO) dye with detailed kinetics studies resulting in 99.50% removal efficiency. The optimized adsorption conditions were further used for adsorption removal studies of methylene blue (MB), malachite green (MG), and bromophenol blue (BPB) with 75.30, 82.88, and 52.40% removal efficiency respectively. The superior CO2 capture and potential dye removal property of obtained HPAC suggests its applicability in environmental remediation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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