| Title |
Single-stage production of miscanthus hydrochar at low severity conditions and application as adsorbent of copper and ammonium ions |
| ID_Doc |
8118 |
| Authors |
Georgiou, E; Mihajlovic, M; Petrovic, J; Anastopoulos, I; Dosche, C; Pashalidis, I; Kalderis, D |
| Title |
Single-stage production of miscanthus hydrochar at low severity conditions and application as adsorbent of copper and ammonium ions |
| Year |
2021 |
| Published |
|
| DOI |
10.1016/j.biortech.2021.125458 |
| Abstract |
In the framework of bio-circular economy, miscanthus biomass was valorized through a single-stage, low severity hydrothermal carbonization process. The produced hydrochars were characterized using elemental and spectroscopic methodologies. It was determined that as the temperature increased so did the C content (47.9 and 68.9% for the samples prepared at 180 and 260 degrees C, respectively), whereas the O content decreased (from 44.2 to 25.5%, respectively). The adsorption behaviour of the hydrochars was investigated in the adsorption of Cu2+ and NH4+ and MIS-180 was determined as the optimum sample, achieving qmax values of 310 and 71 mg g-1, respectively. Isotherm and kinetic analysis indicated the higher number of O-containing functional groups of MIS-180 as the main reason for its higher adsorption capacities. Furthermore, Cu2+ adsorption followed the 2ndorder kinetic model, whereas NH4+ adsorption followed the 1st-order kinetic model, due to the different mechanisms involved, inner-sphere and outer-sphere complex formation, respectively. |
| Author Keywords |
Miscanthus; Hydrothermal carbonization; Ammonium; Copper; Adsorption |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000677955700009 |
| WoS Category |
Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels |
| Research Area |
Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels |
| PDF |
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