Modified superfine powdered activated carbon as well as preparation method and application thereof
A technology of powder activated carbon and ultra-fine powder, which is applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc. The amount of oxygen functional groups and other issues can increase the content and strengthen the adsorption capacity.
Active Publication Date: 2021-08-10
GUANGDONG UNIV OF TECH
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Problems solved by technology
[0004] The primary purpose of the present invention is to overcome the problem that the existing activated carbon modification method cannot increase the amount of oxygen-containing functional groups on the surface, resulting in weak adsorption capacity for hydrophilic organic micro-pollutants, and to provide a method for preparing modified ultrafine powder activated carbon
Method used
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Embodiment 1
[0030] A preparation method of modified ultrafine powder activated carbon, comprising the following steps:
[0031] According to the mass ratio of 1:1, the powdered activated carbon and the modified auxiliary agent are mixed and then placed in a dry ball mill to be ground into particles with a particle size of less than 10 μm to obtain ultrafine powdered activated carbon; The ingredients include potassium monopersulfate 72%, silicon dioxide 8%, sodium bicarbonate 10%, disodium hydrogen phosphate 10%.
Embodiment 2
[0033] The difference between this embodiment 2 and embodiment 1 is that, in terms of mass percentage, the composition of the modified auxiliary agent includes 65% of potassium monopersulfate, 10% of silicon dioxide, 12% of sodium bicarbonate, disodium hydrogen phosphate 13%.
Embodiment 3
[0035] The difference between this embodiment 3 and embodiment 1 is that, in terms of mass percentage, the composition of the modified auxiliary agent includes 58% of potassium hydrogen persulfate, 12% of silicon dioxide, 15% of sodium bicarbonate, disodium hydrogen phosphate 15%.
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Abstract
The invention discloses modified superfine powdered activated carbon and a preparation method and application thereof, and the preparation method comprises the following steps: mixing powdered activated carbon with the particle size of more than 0.1 mm and a modification additive according to a ratio, and grinding into particles with the particle size of less than 10 microns to obtain the modified superfine powdered activated carbon, wherein the performance additive comprises the following components in percentage by mass: 45%-85% of peroxymonosulfate, 5%-15% of silicon dioxide, 5%-20% of bicarbonate and 5%-20% of phosphate; and the mass ratio of the powdered activated carbon to the modification additive is 1: (0.01-2). By grinding and modifying the surface of the activated carbon, the amount of oxygen-containing functional groups on the surface of the activated carbon is increased, so that the adsorption capacity of the activated carbon is enhanced, and the activated carbon can be used for treating hydrophilic organic micropollutants in water; the modified ultrafine powdered activated carbon and sulfite are combined for further removal of manganese ions in water.
Description
technical field [0001] The invention relates to the technical field of water treatment, in particular to a modified ultrafine powder activated carbon and its preparation method and application. Background technique [0002] Organic micropollutants widely present in water pose a potential threat to the ecological environment and human health, among which hydrophilic organic micropollutants are one of the most frequently detected organic pollutants in the environment (such as contrast agents, antibiotics, etc.), and are subject to water pollution. Addresses widespread concerns within the industry. Most of the hydrophilic organic micro-pollutants have certain biological toxicity, which can have adverse effects on the growth and development of organisms and seriously threaten ecological security and human health. Due to the strong polarity and stable nature of hydrophilic organic micro-pollutants, it is difficult to remove them through conventional water treatment processes (su...
Claims
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IPC IPC(8): B01J20/20B01J20/30B01J20/28C02F1/28C02F101/20C02F101/34C02F101/38C02F101/36
CPCB01J20/20B01J20/28016C02F1/283C02F2101/206C02F2101/38C02F2101/34C02F2101/36
Inventor 周扬胡坚鹏高源江进郭钦潘汉平黄润付俊豪
Owner GUANGDONG UNIV OF TECH