Porous oil absorption material and preparation and regeneration method thereof
A technology of oil-absorbing materials and porous materials, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the difficulties in advanced treatment of oily wastewater, short service life, and low deoiling rate of oil stains, etc. problems, to achieve the effect of fast material oil absorption rate, low cost of material modification, and simple material modification process
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Embodiment 1
[0017] A preparation process of a porous oil-absorbing material capable of advanced treatment of oily sewage, using Al with uniform pore size distribution 2 o 3 —SiO 2 Based on the self-prepared porous material as the matrix, the long carbon chain organic acid is used as the modifier, and alcohol and water are used as the solvent to perform modification. The modification steps include:
[0018] ①Wash the self-prepared porous ceramsite with a particle size of 0.5mm to 6mm with water to remove the dirt and dust on the surface, and dry it to obtain a spare porous material with a porosity of 40%;
[0019] ②Surface activation treatment: prepare an activation solution of 0.5% hydrogen peroxide and 0.5% nitric acid, immerse the spare material in the activation solution, control the constant temperature at 80°C for 1 hour, take it out after activation and dry it at 105°C to obtain an activated porous material;
[0020] ③ Preparation of modified solution: take 20V% ethanol, 5V% oleic...
Embodiment 2
[0030] A porous oil-absorbing material, the porous oil-absorbing material is a porous ceramic material with a pore size distribution in the range of 0.1um to 100um and uniform distribution, and a porosity of more than 40%. The porous ceramic material is made of Al 2 o 3 and SiO 2 The porous oil-absorbing material is subjected to surface activation treatment to enhance the hydrophilicity of the surface of the material, and the porous oil-absorbing material is soaked in a modifying solution to obtain super oil-absorbing capacity.
[0031] The preparation method of porous oil-absorbing material, comprises the following steps: (1) select by Al 2 o 3 and SiO 2 The ceramic material composed of porous ceramsite with a particle size of 0.5mm ~ 6mm is washed with water to remove the dirt and dust on the surface, and dried to obtain a spare porous material with a porosity of 40%; (2) Surface activation treatment of the porous material In order to enhance the hydrophilicity of the su...
Embodiment 3
[0038] A preparation process of a porous functional material capable of advanced treatment of oily sewage, using Al with uniform pore size distribution 2 o 3 —SiO 2 Based on the self-prepared porous material as the matrix, the modification steps include:
[0039] ① Wash the self-prepared porous material with a particle size of 0.5 mm to 6 mm with water to remove the dirt and dust on the surface, and dry it to obtain a spare porous material;
[0040] ② Preparation of modified solution: take 20V% ethanol, 5V% oleic acid, and 75V% water to obtain a modified solution;
[0041] ③Modification: immerse the spare porous material in the modification solution for 1 hour. After modification, take it out and keep it at a constant temperature of 150°C for 0.5 hour to obtain a porous oil-absorbing material with super oil-absorbing capacity.
[0042] After the material absorbs oil to saturation, the regeneration method of the embodiment 1 or embodiment 2 is used to realize the regeneratio...
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