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Outline
The development of photothermal materials derived from coal slime, a solid waste from coal mining, offers a promising approach for the resource utilization of both coal waste and highly mineralized mine water. Coal slime was processed into coal-based carbon material (MC) through calcination and pickling processes. The MC exhibited excellent light absorption (~95.0% in the 200~2500nm) and photothermal performance, with the surface temperature reaching 55.1℃ within 180s of illumination. A spherical evaporator with high-salinity resistance and self-suspension was prepared by incorporating sodium alginate into MC and crosslinking it with calcium chloride, using sodium bicarbonate as a pore-forming agent and polyvinyl alcohol as a foam stabilizer, via the dropwise method. The optimized composite (SA2/1-MC2) showed strong photothermal performance, achieving evaporation rates of 0.97kg/(m2·h) for 20.0wt% NaCl solution and 0.99kg/(m2·h) for reverse osmosis concentrated mine water, with stable operation over 10h. These results demonstrate that SA2/1-MC2 is an effective material for treating highly mineralized mine water.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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