Table 7 Comparison of the adsorption capacities of biochar produced using MAP and CP
Precursor Material | Method | Temperature (°C)/ Power (W) | Modified/ Pristine | Metal(s) Removed | Adsorbent Dose | qe (mg g−1) | References |
|---|---|---|---|---|---|---|---|
Bamboo Chopsticks | Microwave-Assisted Pyrolysis | 200 W | Pristine | Pb (II) | 2 g L−1 | 18 | This study |
450 W | 24 | ||||||
Conventional pyrolysis (Tube furnace) | 500 °C | Pristine | 23 | ||||
700 °C | 23 | ||||||
Empty Fruit Bunch (EFBB) | Conventional Pyrolysis | 250 °C | Course-EFBB | Pb(II) | 2.5 g L−1 | 55 | [25] |
Medium-EFBB | 58 | ||||||
Fine-EFBB | 103 | ||||||
Eupatorium adenophorum | Conventional Pyrolysis (Tube furnace) | 800 °C | Modified CEA-1 | Pb(II) | 0.5 g L−1 | 18 | [40] |
Modified CEA-2 | 98 | ||||||
Modified CEA-3 | 84 | ||||||
Canola (Brassica napus) | Microwave assisted pyrolysis | 500 °C | Pristine | Pb(II) | 1 g L−1 | 106 | [7] |
Manure Pellet | 60 | ||||||
Saw dust of white spruce (Picea glauca) | 7 | ||||||
Wheat (Triticum aestivum) | 59.2 | ||||||
Hemp | Microwave assisted pyrolysis | 600 °C, 2.7 kW | Magnetically Modified | Pb (II) | 0.5 g L−1 | 61 | [33] |
Unmodified/ Pristine | Â | Â | 27 | Â |