Method for preparing functional blue-green algae biochar and applying functional blue-green algae biochar to intensifying anaerobic digestion
A technology of anaerobic digestion and biochar, which is applied in the field of solid waste resource treatment, can solve the problems of inability to function, the regulation of surface functional groups of difficult biochar materials, and the limited redox ability of primary cyanobacteria biochar, so as to improve oxidation Reduction ability, productivity enhancement effect, and maximum methane production rate enhancement effect
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[0037] The technological process of this embodiment, as figure 1 , wherein the surface oxidation modification method is hydrogen peroxide oxidation modification method.
[0038] Fresh cyanobacteria mud (water content 95%, w / w) was taken and freeze-dried to obtain cyanobacteria powder biomass (moisture content 15%, w / w; organic matter content 90%, w / w) after preliminary dehydration. After sieving to remove impurities, the cyanobacteria powder biomass is crushed, and the average particle size of the cyanobacteria powder biomass is controlled to be 1-5mm. The cyanobacteria powder biomass is prepared by slow pyrolysis under the protection of nitrogen. The heating rate is 10°C / min. The charcoal was sealed and stored at room temperature, and the primary cyanobacteria biochar was prepared. Hydrogen peroxide solution (30%, w / w) was added to the cyanobacterial biochar powder at a ratio of 20:1 (v / w). The mixture was heated to 60°C in a water bath and kept stirring for 12h. After th...
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