Preparation method of biomass-based porous adsorption-catalytic material for waste gas treatment
A technology for porous adsorption and catalytic materials, applied in the field of preparation of biomass porous materials, can solve problems such as waste of resources, environment, pollution, etc., and achieve the effects of simple process, reduced environmental burden, and mild reaction conditions
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Embodiment example 1
[0024] (1) Wheat straw was first pulverized by a pulverizer, and then passed through an 80-mesh sieve; 10 g of pulverized wheat straw was taken, mixed with 85 mL of phosphoric acid and wheat straw powder, and treated under microwave power of 30 W for 1 h. Add 200 mL of deionized water to the pretreated wheat straw powder and mix well, then filter, collect the filtrate and filter cake, rinse the filter cake with deionized water repeatedly until neutral, and dry to obtain the wheat straw pretreatment raw material for use;
[0025] (2) Prepare a culture medium containing 17g of tryptone, 3g of soybean peptone, 100g of sodium chloride, and 2.5g of dipotassium hydrogen phosphate per 1000mL, adjust the pH to 7.3±0.2, and sterilize at 121°C for 20min to obtain a fermentation medium; Put 0.25g of the prepared Trichoderma and Fusarium bacteria solution into the fermentation medium, add 10g of pretreated wheat straw powder, and ferment for 10 days to obtain the hydrolyzed polysaccharide ...
Embodiment example 2
[0028] (1) Add 10g of wheat straw raw material that has passed through a 40-mesh sieve into 80mL of sodium hydroxide solution, in which the concentration of NaOH is 2%, and then treat it under the condition of microwave 120W for 30min. After treatment, cool to room temperature, use centrifugation to separate solid and liquid, wash once with sodium hydroxide solution, and then wash with deionized water until the pH of the filtrate reaches neutral. The filter residue obtained from solid-liquid separation was placed in an oven at 60 °C for 9 hours to obtain pretreated straw raw materials;
[0029] (2) Prepare the pretreated straw raw material into a solution with a mass fraction of 5%, adjust the pH value to 4.8, add 0.8% enzyme solution to the unit substrate, and place it in a constant temperature and humidity water bath at 48±1°C for 10 hours for hydrolysis , to obtain the hydrolyzed polysaccharide ligand (M=423);
[0030] (3) Dilute the hydrolyzed dextran (84.6g, 0.2mol) with...
Embodiment example 3
[0032] (1) Add 10g of wheat straw raw material passed through a 40-mesh sieve into 80mL of alkaline sodium sulfite solution, in which Na 2 SO 3 The concentration of NaOH is 2%, and the concentration of NaOH is 0.05%. Microwave auxiliary treatment is carried out, the microwave power is constant at 300W, in a single cycle, the microwave working time is 2min, the intermittent time is 1min, and the working time is 10 cycles, the total time is 30min. After microwave treatment, the solid-liquid separation is carried out by centrifugation. First, wash once with alkaline sodium sulfite solution, and then wash with deionized water until the pH of the filtrate reaches neutrality. The filter residue obtained by solid-liquid separation is placed in an oven at 60°C, and the drying time is 9 hours, and the pretreated straw is obtained;
[0033] (2) Weigh 1.5g of the pretreated straw sample and place it in a 100mL Erlenmeyer flask, add deionized water, adjust the pH value to about 5.0 with...
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