Table 1.
Physicochemical characteristics of activated carbon (AC) and biochar (BC). From left to right: pH, electrical conductivity (EC), total BET surface area (SBET), micro- (Smicro) and mesopore (Smeso) surface area, total pore (Vt), micropore (Vmicro)and mesopore (Vmeso) volumes, moisture, labile matter, resident matter and ash contents (in weight %), C and N mass content, and leachate carbon and nitrogen content.
| Sample | pH | EC μs/cm | SBET (cm2/g) | Smicro (cm3/g) | Smeso (cm3/g) | Vt (cm3/g) | Vmicro (cm3/g) | Vmeso (cm3/g) | Moisture w% | Labile OM w% | Resilient OM w% | Ash w% | C w% | N w% | leaching C (μg/g) | leaching N (μg/g) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AC | 9.2 | 316.8 | 508 | 239 | 269 | 0.417 | 0.096 | 0.321 | 8.7 ±0.2 | 5.6 ±0.7 | 77.6 ±0.5 | 8.1 ±0.2 | 82.8 | 0.61 | 52.5 ±5.8 | ≤LQ (1 μg/g) |
| BC | 9.9 | 454.6 | 4.85 | 2.34 | 2.51 | 0.0096 | 0.0022 | 0.0074 | 6.0 ±0.1 | 12.9 ±2.6 | 78.4 ±2.6 | 2.7 ±0.1 | 77.5 | 1.02 | 1091.7 ±38.2 | 20.2 ±1.6 |