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Generally speaking, waste activated carbon, that is, used activated carbon, has a unit, regenerated, if the use of unit regeneration, it is not suitable from the cost considerations, so it is sold to a specialized regeneration company without treatment, generally manufacturers, treatment into regenerated carbon, the adsorption capacity of regenerated carbon to decline a lot, and now there are too many domestic activated carbon.
In addition to the ability to regenerate, most of the used activated carbon is thrown away as waste residue, which sometimes pollutes the environment. At present, although the amount of activated carbon we use is not much, but because it is imported, it is very high, almost one with our products, I don't know if there is a simple regeneration technology, I don't know how everyone deals with it, I hope you will discuss it, how to deal with the best!!
Activated carbon has adsorption effect because there are many small pores in activated carbon, the size of the adsorption capacity is measured by the specific surface area, after adsorption, the pores of the activated carbon become smaller after adsorbing organic matter or other things, and the adsorption capacity will be regenerated if it decreases, and the regeneration uses steam to make the substances in the pores run out, so that the pores become larger again, and the regeneration process can not be 100% recovered. Therefore, the adsorption capacity of regenerated activated carbon will be reduced a lot.
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Decolorized activated carbon, that is, used activated carbon, is generally the manufacturer, and the adsorption capacity of regenerated carbon is reduced a lot.
In order to avoid contamination, there are generally three steps to avoid contamination
Mix violently so that the charcoal is quickly dispersed into the sewage;
Contact adsorption and oxidation, so that the carbon is suspended in sewage for suspension adsorption and oxidation;
Liquid-solid separation, which separates the carbon from the effluent and then regenerates it.
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1. The general operating temperature of activated carbon is 75-80 degrees.
2. The decolorization effect of activated carbon is the strongest in water, and the effect is also good in strong solvents, but the effect is poor in non-polar solvents.
3. In general, it is better to use under PH3-6 conditions.
4. Under normal circumstances, the amount added is one to three thousandths.
5. The decolorization time is generally 30-60min.
6. There are many types and models of activated carbon, such as carbon for sugar, carbon for oil, etc., so choose one that is suitable for your use.
7. Before adding activated carbon for decolorization, the temperature of the solution should have cooled down, and it is easy to burst when added at high temperature. After adding, boil for about 30min, and then filter.
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Summary. Useful. Cooling down after active mone decolorization can effectively inhibit the mone decolorization reaction, reduce the formation of mone decolorization products, and thus improve the quality of the product. In addition, cooling can also reduce reaction time, improve reaction efficiency, and save energy.
Useful. Cooling after reactive decolorization can effectively inhibit the decolorization reaction of Qi Shenmao, reduce the formation of decolorization products, and improve the quality of products. In addition, cooling can also reduce reaction time, improve reaction efficiency, and save energy.
Fellow, I really didn't understand, I can be more specific.
Cooling down after decolorization is useful because it reduces the oxidation of the reactive phenone, thus preventing the adverse effects of the oxidation of the reactive phenone. The oxidation reaction of reactive cone occurs due to the oxidation of reactive cone by an oxidant at high temperature. When the active cone is oxidized by an oxidant, it produces an organic substance called "cexone oxide", which will change the performance of the active cyanolite, thereby affecting the performance of the active cyanolite.
To solve this problem, cooling measures can be taken to reduce the oxidation reaction of the reactive cycton. Cooling can reduce the oxidation of the reactive mocuse by the oxidant, thereby preventing the adverse effects of the oxidation reaction of the reactive mozone. Personal Tips:
When using Reactive Socks, attention should be paid to cooling down to reduce the negative effects of the oxidative reaction of Active Socks and prevent the adverse effects of the oxidative reaction of Active Socks.
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Summary. Hello dear, glad to answer for you! Reasons for activated carbon decolorization and filtration while hot:
1.Under hot conditions, most solutes have a high solubility in solvents, making them completely dissolved. 2.
Under hot conditions, the viscosity of most solutions decreases, reducing the filtration resistance and speeding up the filtration speed. 3.For effective separation, to remove insoluble impurities (mostly mechanical), or to separate from depigmented substances (such as activated carbon), solute precipitation may occur at low temperatures, and the separation effect is not good.
Hello dear, glad to answer for you! Activated carbon decolorization while hot which Heng shed filtration reasons: 1
Under hot conditions, most solutes have a high solubility in solvents, making them completely dissolved. 2.Under hot conditions, the viscosity of most solutions decreases, reducing the filtration resistance and speeding up the filtration speed.
3.Carry out Li Ze effective separation, remove insoluble impurities (mostly mechanical), or to separate from decolorizers (such as activated carbon), there may be solute precipitation at low temperature, and the separation effect is not good.
Decolorization is the removal of impurities in compound samples by adsorption. When the sample (product) is solid, it is generally dissolved with an appropriate solvent, the adsorbent is added, and the impurities are adsorbed by the adsorbent after staying or stirring for a while. After filtration, the impurities attached to the suction file rock are left on the filter paper with the adsorbent and separated from the sample.
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Summary. Decolorization is the removal of impurities from compound samples by adsorption. When the sample (product) is solid, it is generally dissolved with an appropriate solvent first, the adsorbent is added, and the impurities are adsorbed by the adsorbent after staying or stirring for a while.
The adsorbed impurities are then filtered and left on the filter paper with the sorbent and separated from the sample.
What is the principle of activated carbon decolorization, and what is removed from decolorization?
Decolorization is to remove impurities in the chemical bumper sample by adsorption. When the sample (product) is solid, it is generally dissolved with an appropriate solvent, the adsorbent is added, and the impurities are adsorbed by the adsorbent for a while. The adsorbed impurities are then filtered and left on the filter paper with the sorbent and separated from the sample.
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Summary. Hello, the substance of activated carbon desorption depends on whether the adsorbed substance is a toxic and harmful chemical. If the adsorbed substance only contains three elements, carbon, hydrogen and oxygen, it can be used as fuel.
If it adsorbs toxic and harmful elements such as heavy metals, chlorine, and sulfur, it should be treated as hazardous waste.
Hello, the Qingliangbo substance of activated carbon desorption, to see whether the adsorbed residue is a toxic and harmful chemical. If the adsorbed substance only contains three elements, carbon, hydrogen and oxygen, it can be used as fuel. If it adsorbs toxic and harmful elements such as heavy metals, chlorine, and sulfur, it should be treated as hazardous waste.
I hope mine is helpful to you, and if you can, I hope to give it a thumbs up! [Bixin] [Bixin].
Of course. However, the effect and time of repeated use are greatly reduced. Because the activated carbon adsorbs other substances, it is difficult to remove it by general methods, especially the substances like filtered edibles, such as water, which are more difficult to do, and the industrial use is easier to deal with, because the method of processing activated carbon must use substances such as acid and alkali, if it is not cleaned after treatment, it is better not to use it more safely. >>>More
Activated carbon is a good adsorption material, black porous solid carbonaceous, mainly divided into coconut shell charcoal, fruit shell charcoal, wood. >>>More
The validity period of activated carbon is the life of activated carbon, and the life of activated carbon has two meanings: first, storage mission; Second, the service life. >>>More
Commonly used indicators of activated carbon, iodine value, carbon tetrachloride, methylene blue value, these three indicators are activated carbon for liquids, gases, decolorization, other like, moisture, strength, these are not too critical.
1. The strip cloth or standard cloth dyed with direct dyes has poor adhesion of the general color, and it is best to add a little salt to the water when washing, and soak the clothes in the solution for 10-15 minutes before washing, which can prevent or reduce fading. >>>More