Does activated charcoal really work? How to distinguish the authenticity of activated carbon?

Activated carbon belongs to physical adsorption, which can effectively eliminate a part of formaldehyde, but activated carbon does not have the function of decomposing formaldehyde, so it is necessary to pay attention to regular drying when using, otherwise it will cause saturation and may bring secondary pollution.

1.Airy. As long as the local air quality meets the standard, other pollutants will not be introduced, and it is easy to use and low cost, but it needs to be insisted on for a long time, because the release life of formaldehyde is long, and it is easy to repeat the situation when the ventilation is not smooth.

2.Fresh air system.

The fresh air system can ensure that the home is in a ventilated state 24 hours a day, which can greatly increase the exchange of indoor air and the outside world, although the effect is very good, but the first time of this fresh air system is more expensive, and it is a better choice to install it before decoration.

<>4.Plant. The use of green plants to purify formaldehyde is a very promising way to remove formaldehyde, plants will adsorb a part of formaldehyde during photosynthesis, but the absorption is extremely small, and it is recommended as an auxiliary method when removing formaldehyde.

5.Air purifier.

Air purifier is once a relatively high-end product, was Wang Xie Tang Qianyan, and now it has also flown into the homes of ordinary people, although it is not small, but the air purifier that does not have the function of removing aldehyde, the purification ability of formaldehyde is negligible, and the product with the function of adsorbing formaldehyde also needs to be opened for a long time, and the aldehyde filter box needs to be replaced regularly to ensure the effect of aldehyde removal.

6.High temperature. High temperature and drying can accelerate the volatilization of formaldehyde and other harmful substances, so you can take out drawers, movable furniture, mattresses, etc., to the balcony for ventilation and drying, and furniture that can not be dried can be fumigated at high temperature, with garment steamer, steam engine mop, high temperature steam to speed up the volatilization of formaldehyde.

Activated carbon is an effective way to remove formaldehyde, but it is not recommended to use it for a long time, when using activated carbon, it needs to be dried or replaced regularly, and the removal of formaldehyde only with activated carbon This method is too single, if you want to move into a new house as soon as possible, it is recommended that you carry out a variety of methods at the same time, and then bring you several efficient and convenient methods

1. Wise Stone.

It is currently a relatively cost-effective formaldehyde removal product, its advantage is that it can be decomposed into water and carbon dioxide at the same time of absorbing formaldehyde and harmless substances to the human body, because of its decomposition characteristics, so that it will not appear adsorption saturation and indoor secondary pollution, and suitable for various types of environmental use. In addition, its removal rate is also dozens of times that of traditional adsorbent materials. When choosing, it is important to note that it is a gray ore with an irregular shape and is not a round particle.

2. Plants.

Plants can remove formaldehyde, although formaldehyde can be removed, but the amount of formaldehyde it absorbs is very limited, and when the indoor concentration is high, if the plant alone relies on formaldehyde adsorption, the amount is very large.

3. Wind fan.

We all know that the easiest way to remove formaldehyde is to ventilate, the room ventilation is not in a good state of the family, you can use the fan to accelerate the indoor and outdoor air flow, accelerate the discharge of formaldehyde-containing air, can effectively reduce the indoor pollutant concentration, but it can only treat the symptoms but not the root cause, and this method may not be very practical in the season when you need to keep warm.

Fourth, high temperature.

The release rate of formaldehyde mainly depends on two factors, one is temperature, the other is humidity, so we can use this characteristic of formaldehyde, use heaters, humidifiers, etc. to keep the room in a state of high temperature and high humidity, and then we can cooperate with ventilation or adsorption materials to absorb the formaldehyde that has been released at home, this method is mainly to treat the latent formaldehyde in the home, and the effect is very good.

5. Photocatalysts.

The main principle of photocatalyst is that the spray will adhere to the surface of the object to form a strong film, on the one hand, it will slow down the release of formaldehyde, on the other hand, it will contact with the film during the release process, and oxidize formaldehyde by using the photocatalytic performance of the photocatalyst. However, in daily life, the film may oxidize and wear, and the effect will be halved.

There are many types of activated carbon, including wood activated carbon, fruit shell activated carbon, coconut shell activated carbon, and coal activated carbon. Its raw materials, characteristics, functions, and industry uses are all different. It is necessary to choose the right activated carbon according to the industry use to solve the problems you encounter.

Today I list the following 4 points as a reference, I hope it will be helpful to you.

1. Iodine value: Iodine value is a performance difference of wood activated carbon, and the iodine value of activated carbon raw materials ranges from 800-1100mg g, and the adsorption capacity and cost are also different.

2. Weigh the weight by hand: the adsorption performance of wood activated carbon is related to its own voids, the more pores, the more crisp and loose the wood activated carbon, and the lighter the relative density, so the good wood activated carbon will feel lighter, and in the case of the same weight packaging, the wood activated carbon with good performance will be much larger than the inferior activated carbon.

3. Look at the bubbles: put a small handful of activated carbon into the water, due to the osmosis of the water, the water will gradually soak into the pore structure of the activated carbon, forcing the air in the pores to be discharged, thus producing a series of extremely fine bubbles, pulling out a small bubble line in the water, and at the same time will emit a slight bubble sound, which is very interesting. The more intense this phenomenon occurs and the longer it lasts, the better the adsorption of activated carbon.

4. Look at the decolorization ability: wood activated carbon has the magical ability to turn colored liquid into light or colorless, which is caused by the fact that wood activated carbon adsorbs the pigment molecules in the colored liquid.

Next, let's do a small experiment: prepare a bottle of colored liquid, take two transparent cups, pour the colored liquid into two cups respectively (one is used as a sample), put the wood activated carbon into the colored liquid used in the experiment, and let it stand for 15 minutes and compare it with the sample (another cup of colored liquid) and a cup of liquid, it is obvious that the liquid with wood activated carbon effectively removes impurities and gases, and the water becomes clear.

Activated carbon is generally used for filtration and decolorization, as a reducing agent and as an absorbing gas. According to its application field, the specific role of activated carbon is different. For example, during World War II, activated charcoal was used in gas masks; Tap water can be deodorized with activated carbon; Ye Guang mud is a new type of material, and activated carbon is different, activated carbon can only adsorb, with a period of time after the adsorption will be saturated, release harmful substances again, produce secondary pollution, Ye Guang mud is not only adsorption, is adsorption can decompose harmful substances, will not be released, do not need to be exposed to the sun, can be permanently decomposed, no secondary pollution.

The good and bad are distinguished as follows:

Look at the activated carbon index.

After determining whether it is a manufacturer, it is necessary to look at the carbon tetrachloride value of activated carbon, and the adsorption function of activated carbon depends on the carbon tetrachloride value, and the determination method is to adsorb carbon tetrachloride with activated carbon, and the measured result is the adsorption rate of activated carbon.

Activated carbon packaging is best sealed packaging.

Because the air is more or less permeated with a variety of organic macromolecular substances, especially in the newly renovated store or home storage cabinet in the phenolic concentration is very large, these substances will be adsorbed by activated carbon, over time, the adsorption performance of activated carbon will be reduced or even unusable because of the adsorption of these substances. Therefore, the higher the adsorption value of activated carbon, the more it should be sealed to prevent the performance of activated carbon from being interfered with by the outside world.

Look at the bubbles. When a small handful of activated carbon is thrown into the water, the water will gradually soak into the pore structure of the activated carbon due to the osmosis of the water, forcing the air in the pores to expel out, thus creating a series of extremely fine bubbles, and pulling a fine bubble line in the water, which is very interesting.

Activated carbon. It is only effective if used in a small area.

Don't be fooled, 99% of the manufacturers in the baby description are provided in the laboratory such as the most ideal, the most favorable environment for the test results measured data, this can refer to the manufacturers of activated carbon inspection report on the description of the testing space, either no description, or the range is very small (usually less than 1 cubic meter, some even less than cubic meters), why? Because the way activated carbon works determines that it does not work well in large areas of the room (normal home environment); And if you want to achieve the effect in the laboratory at home, the dosage will increase dozens of times than the manufacturer's advertisement.

Take the most popular aldehyde nano brand activated carbon sold on the ** as an example to illustrate the effect of activated carbon.

The test report provided by aldehyde sodium (the test report is ** searched by yourself, there are many in the description of the baby) describe that the test space is cubic, the dosage is 10 grams, and the purification is more than 90% in 2 hours, and the recommended use range is within 30 square meters.

Okay, let's calculate, 30 square meters, is 90 cubic meters, is 900 times the detection environment, within 2 hours to achieve the effect on the test report to 900 * 10 = 9000 grams, then how much, you calculate yourself.

Or another algorithm, 900 * 2 = 1800 hours, that is, 75 days, that is to say, it takes at least 75 days to achieve the effect with one pack of him, in fact, it is impossible in the case of continuous volatilization of formaldehyde.

The way they work with passive adsorption dictates their extremely limited effectiveness.

Activated carbon has a certain effect and can absorb harmful substances such as formaldehyde.

When measuring the data of formaldehyde absorption by activated carbon, a layer of activated carbon powder is used to spread a layer on the dish, the smaller the particles, the better the adsorption capacity. As for the surface area, micropores that are too small or too large have an impact on the absorption capacity of formaldehyde. The ability of activated carbon to solidify formaldehyde is limited, and its absorption capacity decreases with the increase of temperature.

If the external formaldehyde concentration is reduced, the activated carbon with the original absorption balance will also release formaldehyde as a sealed environment, which can be used to absorb formaldehyde is very good. However, generally activated carbon is easy to be saturated, and if it is used as a home environment, Ye Guang mud material can decompose the absorbed substances.

Some activated carbon manufacturers' waste carbon raw materials are not exactly the same, and there may be coconut shells, peach shells, walnut shells and coal carbon. These ** carbon particles are uneven, the thickness of the particles is not the same, the thickness of the peach shell charcoal is large, but there will be some pits on the surface that can be seen with the naked eye, if it is 20-40 mesh peach shell charcoal is a little difficult to identify.

1. From the point of view of the color of the particles, the surface of the regenerated activated carbon is gray and dark, and the cross-section of the particles is not bright, and you will see fine cracks if you look closely.

2. From the appearance, the edges and corners of the recycled carbon are not distinct and will be very smooth, which is mainly formed by the frequent friction between the particles when used, which is particularly obvious.

3. There are also some regenerated activated carbon that does not undergo high-temperature activation treatment, only some simple pickling, alkali washing, and water washing. During the treatment process, there will be a small amount of activated carbon particles with a dark yellow surface, and some will also have a small amount of quartz sand particles.

4. The hardness of primary carbon is relatively high, at most it will adsorb a little ash on the surface, and it will not be dirty after grasping, if it is recycled carbon, the hardness is not as high as the original carbon, and a large amount of fine powder will be produced by hand, and it is easy to dirty hands when grabbing a handful.

Introduction: Speaking of activated carbon, many people know that activated carbon can absorb harmful substances in the air to purify the air, but in fact, some people will also add activated carbon to food, so that the whole food becomes different, so activated carbon can really be eaten?

Activated charcoal can be used, but it must be food-grade activated carbon, which means that the activated charcoal has been processed accordingly so that it can be added to the food and can make a difference. And some businesses will use this as a gimmick to advertise, but the adsorption function of activated carbon is there, some people have found that when activated carbon enters the human body, it will absorb harmful substances in the human body, and can purify people's intestines and digestive tract. However, some scientists say that activated carbon does not have the ability to distinguish adsorbed things, which means that activated carbon can easily adsorb nutrients into the body.

Therefore, there is no need to be overly sought after for such an emerging food category as activated charcoal, if you consume too much, then the nutrients in the body will also be absorbed, so try to eat as little as possible in daily life. In this way, you can protect your health, and in addition, if you do not reach the food grade, you can't eat it.

In fact, many people want to make their intestines healthy in various ways, so that they can eat better and help themselves absorb nutrients. The protection of intestinal health is first to maintain the stability of one's intestinal flora, so that there will be more probiotics to help oneself absorb and make one's stomach and intestines more smooth. In addition, in terms of diet, it should not be too complicated, it must be light, and it is best to eat less processed foods and eat more normal meals when eating.

In this way, you can make your digestive burden not so heavy, and you can eat less and more meals at ordinary times, so that you can digest well at this time.