Porous separation material as well as preparation method and application thereof
A technology for separation of materials and time, applied in chemical instruments and methods, separation of immiscible liquids, and other chemical processes, etc., can solve the problem of insufficient contact between emulsion and biochar, high-efficiency separation of emulsion wastewater, and difficulty in infiltration and spreading of emulsion droplets. To achieve the effect of strengthening the wetting and spreading, overcoming the easy damage of the structure, and increasing the specific surface area and pore volume
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[0063] The second embodiment of the present invention provides a preparation method of a corrosion-resistant porous separation material with adjustable wettability, which includes the following steps: drying and crushing the discarded grains and then sieving to obtain pretreated discarded grains; Controlled pyrolysis and carbonization of the waste, cooling to room temperature to obtain the waste biochar; and water vapor activation treatment for the waste biochar to control its surface wettability and pore structure, and cooling to room temperature.
[0064] It should be noted that the corresponding process parameters in the second embodiment are the same as those in the first embodiment.
[0065] The third embodiment of the present invention provides the application of the porous separation material in emulsion separation.
[0066] The porous separation material of the present invention can perform demulsification on the emulsion and adsorb and store the demulsified oil phase ...
Embodiment 1
[0069] 1.1 Preparation of corrosion-resistant porous separation materials
[0070] The raw materials will be discarded (the actual photo is as figure 1 After drying, pulverize and sieve, and control the particle size to be between 80 mesh and 200 mesh; perform controllable pyrolysis carbonization treatment on the above pretreated waste, and the controllable pyrolysis carbonization treatment process is as follows: Afterwards, the obtained crumbs were heated (10 °C / min) to 300 °C in a nitrogen atmosphere and held for 1.0 h, then heated (10 °C / min) to 650 °C and held for 2.0 h, and then cooled to room temperature. The carbonized dregs biochar was heated (10 °C / min) to 750 °C in a nitrogen atmosphere and activated with water vapor for 2.0 h. The amount of deionized water used to generate water vapor during the activation process was controlled at 20 mL. Then cooled to room temperature to obtain a corrosion-resistant porous separation material. The actual photos are as follows f...
Embodiment 2
[0088] 2.1 Preparation of corrosion-resistant porous separation materials
[0089] After drying the discarded grains, the raw materials are pulverized and screened, and the particle size is controlled to be 80-200 meshes; the above-mentioned pretreated discarded grains are subjected to controllable pyrolysis and carbonization treatment. The controllable pyrolysis and carbonization treatment process is as follows: After the treatment, the obtained waste was heated (10 °C / min) to 300 °C in a nitrogen atmosphere and kept for 1.0 h, then heated (10 °C / min) to 750 °C and kept for 2.0 h, and then cooled to room temperature. The carbonized dregs biochar was heated (10 °C / min) to 750 °C in a nitrogen atmosphere and activated with water vapor for 2.0 h. The amount of deionized water used to generate water vapor during the activation process was controlled at 20 mL. It was then cooled to room temperature.
[0090] 2.2 Determination of water contact angle and oil contact angle
[0091] T...
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Abstract
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