Activated carbon: I have a dream! / Activated carbon: Impurities? Don’t worry! I will solve it!
Activated carbon is specially processed from charcoal, various husks and coal, etc. It first appeared in different scenes. Humans tried to use activated carbon for various purposes a long time ago. Some are used to remove impurities in metal smelting to make bronze, some are used as antiseptics, some are used to purify water and even treat stomach problems, etc., but activated carbon first became famous when the First World War broke out.
A cannon rang in the sky, and the Activated Carbon was born!
“What should I do, can such a serious poisonous gas still win?”
“That’s right, brothers are dead and wounded. I don’t think there is any need to beat this stick. Just wait for death!”
In the dark, I heard some voices, and that was the first time I saw such a world. I heard from my predecessors that this world is green mountains and green waters, birds singing and flowers fragrant, but all I see is a piece of devastation, dilapidated, the whole sky is gray, and even the air is full of annoying impurities, let alone the water.
“Soldiers, don’t give up, we can always develop an “antidote”, so that our soldiers and our brothers will no longer be harmed by poisonous gas!”
I looked towards that voice, it was a man with a tired face, he was in a very bad state, as if he could fall down if the wind blows, but his eyes were full of energy, as if the next second It’s like rushing out.
After a few days, I finally knew why they were worried. They want to filter poisonous gas, and strong adsorption is my strong point!
It took me a long time to remind this group that our brother’s adsorption powers were used to remove impurities from smelted metals to make bronze as early as the Bronze Age.
On the battlefield, I desperately absorbed those harmful gases. At that time, I just wanted to prove my ability to them, but later, I saw such a bright smile on their tired faces, which was more dazzling than the sun I saw in the dark cave before.
At that moment, I wanted to protect such a smile, and I thought that no one in this world would be bothered by the inability to remove impurities.
Impurities are difficult to remove? Look at the “seventy-two changes” of activated carbon
I’ve been to a lot of other places since that war, and modern activated carbon air and water filters have been further developed because of me. By the end of the 20th century, I was in turn being used in a variety of modern medical devices, including wound dressings, kidney dialysis units, and treating drug overdose and anemia in cancer patients.
But I am not satisfied with this. While the technology is progressing, I can’t forget to upgrade my practice, so more types of activated carbon were born. Among them, the coconut shell activated carbon made of high-quality coconut shell as raw material and refined through a series of production processes has the best effect. The appearance of coconut shell activated carbon is black and granular. It has the advantages of developed pores, good adsorption performance, high strength, easy regeneration, economical and durable, and it is also the most widely used and most convenient form.
Different from the basic activated carbon, coconut shell activated carbon belongs to the category of nutshell activated carbon. Its main features are low density, light hand, and the weight in hand is obviously lighter than coal activated carbon. For the same weight of activated carbon, the volume of coconut shell activated carbon is usually larger than that of coal activated carbon.
Moreover, due to the low density, light weight and good hand feeling of coconut shell activated carbon, activated carbon can be put into water, and the carbon sinking of coal is generally faster, while coconut shell activated carbon can float in water for a longer time, because saturated Activated carbon absorbs water molecules, increasing its weight will gradually sink completely. When all the activated carbon sinks, you will see that each activated carbon is wrapped with a small bubble, sparkling translucent twitch, which is very interesting.
By the way, although coconut shell activated carbon has a small molecular pore structure, after the activated carbon enters the water, it absorbs water particles in the air and produces many small bubbles (only visible to the naked eye), which remain floating on the surface. It is the same as coal activated carbon. However, the shape of coconut shell activated carbon is generally broken granules, flakes, and form activated carbon. If it is cylindrical, spherical activated carbon is mostly coal. Don’t admit it wrong!
Wow, Activated Carbon can be used in this way!
Speaking of which, in fact, my strength is far more than that. How can I walk the rivers and lakes without any martial arts? Come and see my record!
1. Breath attachment. Usually, the airflow is passed through the activated carbon layer for adsorption. According to the state of the activated carbon layer in the adsorption device, there are several types of adsorption layers: fixed layer, moving layer and fluidized layer. However, in small adsorbers such as refrigerators and deodorizers in automobiles, adsorption relies on convection and diffusion of gas. In addition to granular activated carbon, activated carbon fibers and activated carbon shaped products are also increasingly widely used in gas phase adsorption.
2. The air in instrument rooms, air-conditioning rooms, basements and submarine facilities often contains body odor, smoking odor, cooking odor, oil, organic and inorganic sulfides, and corrosive components due to external pollution or the impact of crowd activities in a closed environment etc., causing corrosion of precision instruments or affecting human health. Activated carbon can be used for purification to remove impurities.
3. Coconut shell activated carbon can be used in the gas discharged from chemical plants, leather factories, paint factories and projects using various organic solvents, which contain various organic solvents, inorganic and organic sulfides, hydrocarbons, chlorine, oil, mercury and other components that are harmful to the environment can be adsorbed by activated carbon before being discharged. The gas discharged from atomic energy facilities contains radioactive krypton, xenon, iodine and other substances, which must be absorbed by activated carbon before being discharged. The flue gas generated by the combustion of coal and heavy oil contains sulfur dioxide and nitrogen oxides, which are harmful components that pollute the atmosphere and form acid rain. They can also be adsorbed and removed by activated carbon.
4. There are still many use cases of coconut shell activated carbon for refining gas, such as gas masks, cigarette filters, refrigerator deodorizers, automobile exhaust treatment devices, etc., all of which use the excellent adsorption performance of activated carbon to remove toxic components in the gas, which are harmful to the human body. ingredients or odorous ingredients removed. For example, after adding 100~120ng of activated carbon to the cigarette filter, a large part of the harmful components in the smoke can be removed.
5. Demercaptan activated carbon: used as the carrier of gasoline demercaptan (deodorization) catalyst in the catalytic unit of refinery.
6. Vinylon catalyst activated carbon: used in the chemical industry as a catalyst carrier, such as a vinyl acetate catalyst carrier.
7. Monosodium glutamate refined activated carbon: used for decolorization and refinement of mother liquor in the production process of monosodium glutamate, and can also be used for decolorization and refinement of fine chemical products.
8. Activated carbon for cigarette filters: used in cigarette filters in the cigarette industry to remove tar, nicotine and other toxic and harmful substances in cigarettes.
9. Activated carbon for citric acid: used for decolorization, refining and deodorization of citric acid, amino acid, cystine and other acids.
10. Activated carbon for direct drinking water treatment: Activated carbon is used for deep water purification of direct drinking water at home, water treatment in waterworks, and bottled water production.
In short, coconut shell activated carbon has been gradually recognized by people, and it has been dubbed “formaldehyde removal expert”, “air freshening product” and many other good names. With the improvement of living standards, more and more attention has been paid to the impact of air quality on the human body. At this time, people are paying more and more attention to healthy life, so the green product of activated carbon must also be Will become a necessity in people’s life, buy activated carbon will be regarded as a health investment.
I have been reporting my dream all these years, and Wit-Stone gives me this opportunity, I believe I can help you！
Ding dong, you have a letter from Activated Carbon to check!
Activated carbon is specially processed from charcoal, various husks and coal, etc. It first appeared in different scenes. Humans tried to use activated carbon for various purposes a long time ago. Some are used to remove impurities in metal smelting to make bronze, some are used as antiseptics, some are used to purify water and even treat stomach problems, etc., but activated carbon first became famous when the First World War broke out.
The birth of Activated Carbon
In 1915, during the First World War, the German army used a terrible new weapon to the British and French allied forces – the chemical poison gas chlorine, a full 180,000 kilograms! British and French soldiers were killed by poison gas, with as many as 5,000 dead and 15,000 injured! Faced with such a predicament, military scientists have invented anti-virus weapons against chlorine gas poisoning. But when they breathed a sigh of relief, the German army successively used dozens of different chemical weapons, including even the meson gas and hydrogen cyanide compounds that people are familiar with today. Therefore, it is imminent to find an “antidote” that can make any poisonous gas lose its power!
That’s when it occurred to someone that, as early as 400 BC, the ancient Hindus and Phoenicians discovered the healing properties of activated charcoal and began using it to purify water. More recently, in the 18th century, activated charcoal was found to control the odor of gangrenous ulcers, and as such, it has also been used to treat stomach ailments. That being the case, some people have asked whether it can also help people filter some poisonous gas?
Finally, a gas mask containing activated carbon was born, and it played a huge role in the battle between the German army and the British and French allied forces, and even during World War II! It can be seen that the adsorption function of activated carbon is absolutely beyond doubt!
In the days that followed, activated carbon entered human life and became the main contributor to sewage treatment plants, hospitals and other places.
The development of Activated Carbon
According to the shape of activated carbon, it is usually divided into two categories: powder and granular. Granular activated carbon is also available in cylindrical, spherical, hollow cylindrical and hollow spherical shapes, as well as irregularly shaped crushed carbon. With the development of modern industry and science and technology, many new varieties of activated carbon have emerged, such as carbon molecular sieves, microsphere carbon, activated carbon nanotubes, activated carbon fibers, etc.
Activated carbon has a crystal structure and a pore structure inside, and the surface of activated carbon also has a certain chemical structure. The adsorption performance of activated carbon depends not only on the physical (pore) structure of activated carbon, but also on the chemical structure of the activated carbon surface. During the preparation of activated carbon, the edge chemical bonds of aromatic sheets formed in the carbonization stage are broken to form edge carbon atoms with unpaired electrons. These edge carbon atoms have unsaturated chemical bonds and can react with heterocyclic atoms such as oxygen, hydrogen, nitrogen, and sulfur to form different surface groups, and the existence of these surface groups undoubtedly affects the adsorption performance of activated carbon. X-ray studies have shown that these heterocyclic atoms combine with carbon atoms at the edges of the aromatic sheets to produce oxygen-, hydrogen-, and nitrogen-containing surface compounds. These surface compounds modify the surface characteristics and surface properties of activated carbons when these edges become the main adsorption surfaces. Activated carbon surface groups are divided into three types: acidic, basic and neutral. The acidic surface functional groups include carbonyl, carboxyl, lactone, hydroxyl, ether, phenol, etc., which can promote the adsorption of alkaline substances by activated carbon; the basic surface functional groups mainly include pyrone (cyclic ketone) and its derivatives, which can promote the adsorption of activated carbon. Adsorption of acidic substances.
Activated carbon adsorption refers to the use of the solid surface of activated carbon to adsorb one or more substances in water to achieve the purpose of purifying water quality. The adsorption capacity of activated carbon is related to the pore size and structure of activated carbon. Generally speaking, the smaller the particles, the faster the pore diffusion rate, and the stronger the adsorption capacity of activated carbon.
After discovering this feature, people not only upgraded its production method, but also paid attention to its raw materials. Among them, coconut shell activated carbon is made of high-quality coconut shells and refined through a series of production processes. The appearance of coconut shell activated carbon is black and granular. It has the advantages of developed pores, good adsorption performance, high strength, easy regeneration, economical and durable, which is also one of the reasons why it has become the most commonly used activated carbon in daily life.
The use of coconut shell Activated Carbon
The products are mainly used for purification, decolorization, dechlorination, and deodorization of drinking water, pure water, wine making, beverages, and industrial sewage; they can also be used for sweetening alcohol in the oil refining industry, etc. Mainly divided into the following categories:
1. High quality coconut shell activated carbon
Coconut shell activated carbon is a high-quality activated carbon produced from coconut shell raw materials. It is a broken carbon with irregular particles. It has high strength and can be regenerated many times after saturation. Its outstanding features are high adsorption capacity and low resistance. This product is widely used For fixed bed or fluid bed, it is widely used in decolorization, deodorization, removal of organic matter and residual chlorine in central water purifiers, drinking water and industrial water.
Specifications and technical parameters
| project | technical indicators |
| Granularity (mesh) | 4-8, 6-12, 10-28, 12-20, 8-30, 12-30, 20-50 mesh |
| Filling density(g/ml) | 0.45-0.55 |
| Strength(%) | ≥95 |
| Ash(%) | ≤5 |
| Moisture(%) | ≤10 |
| Iodine adsorption value(mg/g) | 900-1250 |
| Adsorption value of methylene blue(mg/g) | 135-210 |
| PH | 7-11/6.5-7.5/7-8.5 |
| specific surface area(m2/g) | 950-1200 |
| Remarks (high standard water purification activated carbon) | Activated carbon used in water purifiers contains heavy metal requirements: arsenic ≤ 10ppb, aluminum ≤ 200ppb, iron ≤ 200ppb, manganese ≤ 200ppb, lead ≤ 201ppb |
2. Activated carbon for extracting gold
Activated carbon for gold extraction is made of high-quality coconut shells from Southeast Asia, and is refined and processed through carbonization, high-temperature activation, and pretreatment. The product has developed pore structure, large specific surface area, high wear resistance, fast adsorption speed, large adsorption capacity, easy desorption, and can be recycled repeatedly. It is widely used in the gold extraction process of carbon slurry method and heap leaching method. The activated carbon for gold uses a special process to carry out high-strength shaping on the activated carbon particles, and almost completely removes the needle-shaped, pointed, angular and other easy-to-grind parts of the particles. The particle shape is full and uniform, which greatly improves the wear resistance of the product. After entering the factory, there is no need for pre-grinding, and it can be used directly after washing with water.
Specifications and technical parameters
| project | technical indicators |
| Granularity (mesh) | 6-12/8-16 |
| Strength(%) | ≥99 |
| Ash(%) | ≤3 |
| Iodine adsorption value(mg/g) | ＞950-1000 |
3. LC-type free chlorine removal special activated carbon
LC-type activated carbon for water purification is a composite type of activated carbon produced by a special process, and the particles are not shaped. Generally, the particles are between 12-40 mesh, and can also be broken into shapes according to user requirements. LC-type free chlorine removal special activated carbon has a removal rate of 99-100% for free chlorine
Specifications and technical parameters
| project | technical indicators |
| Granularity (mesh) | 12-40 |
| Iodine adsorption value(mg/g) | 850-1000 |
| Methylene blue(mg/g) | 135-160 |
| Strength(%) | ≥94 |
| Moisture(%) | ≤10 |
| Ash(%) | ≤3 |
| Filling density(g/ml) | 0.4-0.5 |
| water extract(%) | ≤4 |
| heavy metal(%) | ≤100ppm |
| Half dechlorination value | ≤100px |
| ignition temperature | ≥450 |
4. RJ type special activated carbon for solvent recovery
RJ type solvent-specific activated carbon, which is a kind of columnar shaped activated carbon produced by using high-quality coconut shell raw materials through a special process, with a particle size of 6-8 mesh (φ3mm), can also be made into broken shape activated carbon according to user requirements. The main features of this activated carbon are: fast adsorption speed, less steam consumption for desorption, and the quality index is completely comparable to that of foreign products. It is mainly used for the recovery of solvents such as gasoline, acetone, methanol, ethanol, and toluene.
5. ZH-03 granular sugar charcoal (physical method)
High-performance physical method activated carbon made of high-quality raw materials and high-temperature activation (converter), used for decolorization of citric acid, sugar, and coking wastewater in the pharmaceutical industry. It can treat the chroma from 130 times to less than 8 times, COD from 300PPM to 50PPM, and the treatment cost per ton is about 10 yuan. This kind of activated carbon is granular and can be regenerated after adsorption saturation. The adsorption performance is close to that of chemical method powder carbon
Specifications and technical parameters
| project | technical indicators |
| Granularity (mesh) | 20-50 |
| Iodine adsorption value(mg/g) | 850-1000 |
| Strength(%) | ＞85-90 |
| Moisture(%) | ≤10 |
| Ash(%) | ≤5 |
| proportion(g/l) | 0.38-0.45 |
6. Silver-loaded activated carbon
Silver-loaded activated carbon is a new technology water purification product that exchanges silver ions into the pores of activated carbon and is specially fixed. It uses the powerful “Van der Waals” force of activated carbon to absorb a large amount of organic matter in the activated carbon filter and sterilize it, and reduces the growth of bacteria in the activated carbon, reducing the increase in the nitrite content of the activated carbon filter water.
No acid or alkali is added to the silver-loaded activated carbon process, and the silver-loaded activated carbon contains only silver ions instead of silver oxide, which really has the effect of purifying water.
Specifications and technical indicators
| project | technical indicators |
| Granularity (mesh) | 10-28/20-50 |
| Iodine adsorption value(mg/g) | ≥1000 |
| Strength(%) | ≥95 |
| Moisture(%) | ≤5 |
| Ash(%) | ≤3 |
| Silver loading | 1~10 |
7. Activated carbon for special monosodium glutamate decolorization
This product is made of hard shells such as high-quality coconut shells, apricot shells, and walnut shells, and is refined by physical methods. The product is in the shape of black amorphous granules, which has the advantages of large specific surface area, developed pore structure, strong adsorption capacity, fast decolorization speed, and easy regeneration.
Specifications and technical parameters
| project | technical indicators |
| Granularity (mesh) | 20-50 |
| Filling density(cm3/g) | 0.35-0.45 |
| Strength(%) | ≥85 |
| Moisture(%) | ≤10 |
| Iodine adsorption value(mg/g) | ＞1000-1200 |
| Adsorption value of methylene blue(mg/g) | 180-225 |
| PH | 8~11 |
| specific surface area(m2/g) | ＞1000-1250 |
8. ZH-05 Vinylon catalyst carrier activated carbon
ZH-05 type Vinylon catalyst carrier activated carbon is made of high-quality coconut shell carbon as raw material and refined by advanced equipment through carbonization, activation, selection, crushing, screening, pickling, drying and other processes. The product has an extremely developed microporous structure, large specific surface area, strong adsorption capacity, high mechanical strength, uniform and reasonable particle size distribution, and stable product quality.
Coconut shell activated carbon is refined from coconut shells. It is shaped as amorphous particles. It has the characteristics of high mechanical strength, developed pore structure, large specific surface area, fast adsorption speed, high adsorption capacity, easy regeneration, and durability. It is mainly used for deodorization of food, beverage, medicinal activated carbon, wine, air purification activated carbon and high-purity drinking water, removal of heavy metals in water, dechlorination and liquid decolorization. And it can be widely used in solvent recovery and gas separation in chemical industry.
Coconut shell activated carbon has a long service life and a complete range, including activated carbon for gold extraction, activated carbon for water treatment, refined carbon for monosodium glutamate, special carbon for petrochemical desulfurization, activated carbon for vinylon catalyst carrier, ethylene desalted water carbon, cigarette filter carbon, etc., widely used Used in food, medical, mining, metallurgy, petrochemical, steelmaking, tobacco, fine chemical and other industries.
Precautions for Activated Carbon
1. During transportation, coconut shell activated carbon should be prevented from being mixed with hard substances, and should not be trampled to prevent the carbon particles from being broken and affecting the quality.
2. Storage should be stored in porous adsorbent, so during transportation, storage and use, water immersion must be absolutely prevented, because after water immersion, a large amount of water will fill the active voids, making it useless.
3. Coconut shell activated carbon prevents tar substances from being brought into the activated carbon bed during use, so as not to block the pores of activated carbon and make it lose its adsorption effect. It is best to have decoking equipment to purify the gas.
4. When storing or transporting fire-resistant activated carbon, prevent direct contact with the fire source to prevent fire. Avoid oxygen intake and complete regeneration when activated carbon is regenerated. After regeneration, it must be cooled with steam to below 80°C, otherwise the temperature will be high. Activated carbon spontaneously ignites.
5. Even the best air-purifying activated carbon products should not be used in a closed room for too long, which will easily lead to some diseases. For users, it is necessary to always pay attention to opening windows for ventilation, and pay more attention to physical exercise.
6. Although the amount of coconut shell activated carbon is in principle, the more the better, the greater the amount of use, the more harmful gases will be absorbed, especially if there are elderly people or pregnant women and children at home! But don’t forget to consider the most suitable amount of air purification carbon from an economical point of view.
In short, coconut shell activated carbon has been gradually recognized by people, and it has been dubbed “formaldehyde removal expert”, “air freshening product” and many other good names. With the improvement of living standards, more and more attention has been paid to the impact of air quality on the human body. At this time, people are paying more and more attention to healthy life, so the green product of activated carbon must also be Will become a necessity in people’s life, buy activated carbon will be regarded as a health investment.
And Wit-Stone will provide you with the best quality coconut shell activated carbon, we guarantee the quality of products, the service are perfect and the price are valuable, looking forward to your inquiry!
Post time: Mar-21-2023