Preparation method of polydopamine modified basalt fiber carrier
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A technology of basalt fiber and polydopamine, which is applied in fiber treatment, chemical instruments and methods, textiles and papermaking, etc., to achieve the effects of good chemical and biological stability, large specific surface area and convenient operation
Inactive Publication Date: 2019-09-20
SOUTHEAST UNIV
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[0007] However, in the existing basalt fiber carrier modification methods, there is no re
Method used
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Embodiment 1
[0034] (1) Weigh 40g of basalt fiber and immerse it into 500ml of acetone solution, put it into an ultrasonic cleaner for cleaning for 3 hours, take it out, wash it repeatedly with deionized water, and dry it at 105°C for 4 hours;
[0035] (2) Prepare a 0.5mol / L NaOH solution, soak the basalt fiber in the NaOH solution, take it out after 2 hours, wash it with deionized water several times until neutral, and dry it for later use;
[0036] (3) Prepare a Tris-HCl buffer solution, weigh a certain amount of Tris solution to obtain a Tris solution with a concentration of 15 mmol / L, and then add HCl in an appropriate amount to adjust the pH to 8.0-8.5;
[0037] (4) prepare dopamine modification solution, take a certain amount of dopamine and ammonium persulfate and dissolve in Tris-HCl buffer solution, make the dopamine modification solution that initial concentration is 2mg / mL;
[0038] (5) Soak the basalt fiber in step (2) in the dopamine modification solution in step (4), place it...
Embodiment 2
[0040] (1) Weigh 40g of basalt fiber and immerse it into 500ml of acetone solution, put it into an ultrasonic cleaner for cleaning for 3 hours, take it out, wash it repeatedly with deionized water, and dry it at 105°C for 4 hours;
[0041] (2) Prepare a 0.5mol / L NaOH solution, soak the basalt fiber in the NaOH solution, take it out after 2 hours, wash it with deionized water several times until neutral, and dry it for later use;
[0042] (3) Prepare a Tris-HCl buffer solution, weigh a certain amount of Tris solution to obtain a Tris solution with a concentration of 15 mmol / L, and then add HCl in an appropriate amount to adjust the pH to 8.0-8.5;
[0043] (4) prepare dopamine modified solution, take a certain amount of dopamine and ammonium persulfate and dissolve in Tris-HCl buffer solution, and make the dopamine modified solution whose initial concentration is 4mg / mL;
[0044] (5) Soak the basalt fiber in step (2) in the dopamine modification solution in step (4), place it in...
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Abstract
The invention relates to a preparation method of a polydopamine modified basalt fiber carrier and belongs to the technical field of inorganic fiber material modification and the field of wastewater treatment. The preparation method specifically includes the steps of 1), alkali etch, namely immersing a basalt fiber bundle washed with an acetone solution in a NaOH solution for etching, washing the basalt fiber bundle with deionized water for multiple times after removal, and drying the basalt fiber bundle for standby use; 2), preparation of a Tris-HCl buffer solution, namely adjusting the pH value to 8.0-8.5; 3), preparation of a dopamine modified solution, namely dissolving the dopamine modified solution and ammonium peroxydisulfate in the Tris-HCl buffer solution to obtain 2-4mg/mL of the dopamine modified solution; 4), immersing etched and dried basalt fibers in the dopamine modified solution and placing the basalt fibers on a vibrating table at room temperature, and taking out the basalt fibers for drying after vibration. The preparation method has the advantages of simple process, convenient operation and green environmental friendliness; abundant surface functional groups and good biocompatibility and hydrophilicity are achieved, the adhesive of microorganisms on the surface is promoted, the amount of film hanging is increased, and the efficiency of sewage/wastewater treatment is improved.
Description
[0001] Field [0002] The invention relates to the technical field of modification of inorganic fiber materials and the field of waste water treatment, in particular to a preparation method of polydopamine-modified basalt fiber. Background technique [0003] The biofilm method has been widely used in urban sewage / wastewater treatment. It mainly grows by microorganisms attaching to the surface of the carrier filler, the sewage is in full contact with the microorganisms, and the metabolism of the microorganisms is used to complete the removal of pollutants in the membrane. thereby purifying the sewage. [0004] In the biofilm method, the carrier filler is the habitat for microorganisms, so the performance of the carrier is the key to this treatment method, which directly affects the water purification effect. The general requirements for carrier fillers are: easy to attach microorganisms, large specific surface area, good chemical stability, no secondary pollution, cheap and ea...
Claims
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