Table 4.
Zeta Potential of different biochar adsorbents under different pH conditions.
| pH | Adsorbents | Zeta Potential | Reference |
|---|---|---|---|
| 2 | Iron/zinc Biochar(Fe@Zn@HBC) | 42.9 | [12] |
| 2 | ZVI Magnetic Biochar(FeBC800) | ~23 | [18] |
| 2–4 | MPHC-HDA | >0 | [19] |
| 3 | Palm fiber biochar(BC) | ~5 | [39] |
| 3 | MBCO a | ~15 | [39] |
| Below 4.2 | N-doped magnetic agar biochar (ABF-N800) | >0 | [40] |
| 4.61 | Magnetic Biochar (SMBC2) | 45.7 | [17] |
| 7–11 | NiAl layered double oxides modified magnetic corncob biochar | <0 | [41] |
| 10.11 | Pennisetum hydridum biochar | −48.1 | [42] |
| 3 | biochar | 7.99 | This paper |
| 5 | biochar | 3.72 | This paper |
| 7–11 | biochar | <0 | This paper |
| 3 | m-biochar | 26.7 | This paper |
| 5 | m-biochar | 19.7 | This paper |
| 7–11 | m-biochar | <0 | This paper |
a The palm fibre biochar was oxidized by hydrogen peroxide (BCO) and loaded of Fe3O4 nano-particles.