Activated carbon surface adsorption and activated carbon strength related questions

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Activated carbon surface adsorption and activated carbon strength02021-09-06 18:55:02
Principle of activated carbon adsorptionwww.powdered-activated-carbon.com  activated carbon is a kind of very small granular has a large surface area, and more tiny holes in the granular - capillary. The capillary has very strong adsorption capacity, due to the granular surface area is large, so a good contact with with gas (impurities). When these gases (impurities) encounter capillary by adsorption, purification effect. Activated carbon surface area of the study is very important, only the BET specific surface area detecting data of active carbon method detected result is reliable, domestic at present there are many instruments can only make direct comparison method of detectionIn domestic has been eliminated. Specific surface area test unified the multi-point BET method at home and abroad, specific surface area measurement standards are developed at home and abroad is based on BET test method, please see our national standard (GB/T 19587-2004) - gas adsorption BET principle of solid material specific surface area measurement methods. Specific surface area testing is actually the more time-consuming jobs, as the adsorption capacity of sample is different, some sample testing may need to spend the whole dayTime, if the test process is not fully automated, the tester can not leave at any time, and should be highly focused, observe the dashboard, control the knob, a little careless will lead to the failure of the test process, which will waste a lot of valuable time of the tester.pelletized activated carbon   F - Sorb 2400 specific surface tester is really able to BET method detection instruments (both direct comparison method), the more important F - Sorb 2400 specific surface tester is by far the only specific surface area of the fully automated intelligent testing equipment, the test results with the international high consistency, the stability is very good also, at the same time reduce the human error, improve accuracy test results. The adsorption capacity of activated carbon on each gas (unit: mL /cm3):H2, O2, N2, CI2, CO2 4.5, 35, 11, 494, 97 The main factors affecting the adsorption of activated carbon ① the nature of activated carbon adsorbent The larger the surface area, the stronger the adsorption capacity; Activated carbon is a non-polar molecule, easy to adsorb non-polar or very low polarity adsorbent The size of the activated carbon adsorbent particle, the structure and distribution of the fine pore and the surface chemical properties also have a great influence on the adsorption. 
Specific surface adsorption of activated carbon02021-09-08 01:37:25
At present, China consumes 250 million MR of wood annually, and imports 3 billion US dollars of wood and forest products annually to make up for the shortage.In order to ensure the fundamental interests of China's forestry enterprises, extend the industrial chain of wood processing products, and promote the development of China's timber industry to the efficient utilization of wood based on the deep processing of products and the comprehensive utilization of raw materials, it has become the pursuit of China's forestry industryhttps://www.granular-activated-carbon.com  Water rice only previews downloaded documents in HD without watermarkcoal based granular activated carbon  The target of the.Yakeshi city junxi wood industry co., LTD. To meet the needs of market development, actively develop wood waste processing projects, has made the enterprise in technology, management, personnel with a strong development potential. 
The main surface adsorption of activated carbon02021-09-06 18:50:03
The purification efficiency of activated carbon adsorption method is 99.2%~99.3%. For the treatment of large air volume and low concentration of organic waste gas, it is agreed that this method is the most mature and reliable technology at home and abroad, but the T art process is too long, the operation cost is high, and it is often more difficult to need a stable steam source.coal based granular activated carbon   In view of these problems, combined with the characteristics of this graduation design and only body requirements, the use of activated carbon fixed bed adsorption system for industrial organic waste gas purification, the selection of honeycomb activated carbon as adsorbent.The process system is compact and integrated with adsorption and desorption. https://www.granular-activated-carbon.com  The waste gas produced in the production process, mainly of benzene, toluene, xylene, etc., according to the nature of benzene class, this scheme adopts the active carbon as adsorbent to absorb the waste gas, the adsorption bed configuration 2 sets of above commonly, use rotation, when one adsorption bed adsorption of organic adsorption amount of reach regulation, change to another Ⅰ adsorption bed for adsorption purification operation, at the same time to take off one in front of the adsorption bed with regeneration.Desorption is carried out by heating under the action of additional steam, and most of the hotgas released by the tail gas is used for desorption and regeneration of adsorbent in the adsorption bed to achieve the utilization of waste heat.The waste gas volatilized from production is sent to the adsorption tower by centrifugal fan with activated carbon as adsorbent. The gas in the tower is processed through the activated carbon filter layer from right to left and from bottom to top, and the purified gas is discharged into the atmosphere through the exhaust pipe.  Adsorption capacity refers to the amount of adsorbents adsorbed on the adsorbent per unit mass under certain conditions. It is usually expressed in terms of K adsorbents /kg of adsorbent or mass percentage, which is a sign of the adsorption capacity of the adsorbent. In industry, the amount of adsorption is called the activity of the adsorbent. The activity of the adsorbent can be expressed in two ways :(1) the static activity of the adsorbentUnder certain conditions, the equilibrium adsorption capacity of the adsorbent is its static activity.For a certain adsorption system, the static activity depends only on the adsorption temperature and the concentration or partial pressure of the adsorbed substance. Dynamic activity of adsorbents 
Activated carbon specific surface adsorption capacity02021-09-06 18:53:21
The background of the project and the necessity of investment constructioncoal based granular activated carbon  In recent years, with the continuous decrease of wood resources and the deterioration of ecological environment worldwide, environmental protection, the realization of sustainable development and comprehensive utilization of resources have become a common concern ofpeople and a problem that the international community is committed to solving.To further improve the level of comprehensive utilization of wood resources and the added value of products has become the main goal of the world wood processing industry.https://www.granular-activated-carbon.com  China has a large population and is short of forest resources. The per capita forest stock volume is 0.12m3, lower than the world average level of 0.65 m3.China's wood comprehensive utilization level is also low, only 40%, and advanced countries can reach 80%, and in the level of technology, product grade, production efficiency, market competitiveness and other aspects compared with the developed countries also have a big gap. 
The main surface of activated carbon adsorption and absorption02021-09-06 18:52:34
Increase the number of activated carbon mesh and millimeter corresponding table content and related websites. It's not advertising. It's a lot of help to consumers. Now activated carbon is in accordance with the eye, but we do not know that the eye can be changed into millimeters.pelletized activated carbon   Activated carbon is widely used in all aspects of industrial and agricultural production, such as the petrochemical industry without alkali deodorization (refined demercaptan), ethylene desalting water (refined filler), catalyst carrier (palladium, sales, men, etc.), water purification and sewage treatment; Water quality treatment and protection of power plants in the power industry; Chemical industry of chemical catalyst and carrier, gas purification, solvent recovery and oil and other decolorization, refining; Food industry beverage, wine, MSG mother liquor and food refining, decolorization; Gold extraction and tailings recovery in the gold industry; Environmental protection industry sewage treatment, waste gas and harmful gas treatment, gas purification; As well as related industries of cigarette filter, wood floor moistureproof, taste absorption, automobile gasoline evaporation pollution control, the preparation of various impregnation liquid, etc. Activated carbon in the future will have excellent development prospects and broad sales market. www.powdered-activated-carbon.com  Particle strength is also a main index of granular activated carbon. In order to improve the particle strength of granular activated carbon, usually take some special processing measures, such as adding some material help plasticizing and proper mechanical treatment 4 or control in the process of kneading kneading temperature and kneading time, can greatly improve the strength of granular activated carbon particles, making the strength of the granular activated carbon has reached the fruit shell carbon intensity index. apparatus. For the gas phase adsorption, the size of the gas molecules is usually less than 1. ONM, the use of microporous activated carbon; For liquid-phase decolorization refining, due to the large size of the liquid molecules, it is necessary to use activated carbon with developed mesopore. Activated carbon has a large specific surface area and a particularly developed micro-pore structure, which is the main reason for its strong adsorption capacity and large adsorption capacity. 
Pore structure and specific surface adsorption of activated carbon02021-09-08 01:32:57
The background of the project and the necessity of investment constructionhttps://www.granular-activated-carbon.com  In recent years, with the continuous decrease of wood resources and the deterioration of ecological environment worldwide, environmental protection, the realization of sustainable development and comprehensive utilization of resources have become a common concern ofpeople and a problem that the international community is committed to solving.To further improve the level of comprehensive utilization of wood resources and the added value of products has become the main goal of the world wood processing industry.coal based granular activated carbon  China has a large population and is short of forest resources. The per capita forest stock volume is 0.12m3, lower than the world average level of 0.65 m3.China's wood comprehensive utilization level is also low, only 40%, and advanced countries can reach 80%, and in the level of technology, product grade, production efficiency, market competitiveness and other aspects compared with the developed countries also have a big gap. 
Ding Xinda activated carbon purification and decomposition of specific surface area adsorption capacity0CLMnb2021-12-06 22:49:48
The preparation methods of activated carbon include physical method, chemical method, microwave radiation method, etc.(1) Physical method.activated carbon from china   Physical method is to use carbon dioxide, water vapor or the mixture of both as activator, the carbonized carbon material and gas in the activation furnace at 500~1200℃ for carbon activation reaction, so that the pore size of the carbonized material to expand, the formation of activated carbon with porous microcrystalline structure.Gas activation method mainly includes carbonization and activation engineering.The so-called carbonization, refers to the low temperature (about 500℃) is small, the volatile coal tar molecules in the material and the thermal decomposition and curing process of asphalt, that is, to remove the volatile in advance, made suitable for the next step of activation with carbonization.gold coconut shell activated carbon  When the temperature is below 600℃, the specific surface area of carbonized material increases with the increase of temperature.When 600~900℃, the specific surface area reaches a certain value: 250~300 m2/g; when above1000℃, the specific surface area shrinks rapidly. When the carbonization temperature is above 800℃, the reaction performance of carbonized compounds and activation gas gradually becomes weaker, so the carbonization temperature is generally below 1000℃. However, if the residual volatile content and thermal effect are taken into account, the most suitable temperature should be 600~700℃39]. The carbonized substance obtained from the carbonization process is placed in water vapor or a mixture of water vapor and combustion gas and heat treated at 800~1000℃, which is called the activation process. The commonly used activation gases are carbon dioxide, water vapor, oxygen, etc., due to the oxidation reaction of these gases on the surface of the carbonized substance, eroding the carbonized substance, thus producing a rich porous structure.(2) Chemical method. Chemical activation method is a method of preparing activated carbon by adding chemicals to the raw materials used or impregnation into the raw materials or carbonized materials, and then heating it at high temperature in inert gas.The chemicals used in chemical activation are generally dehydrating.The more commonly used activator is: inorganic acid varieties have phosphoric acid, sulfuric acid and boric acid, salt varieties have zinc chloride, calcium carbonate and potassium sulfate, alkali varieties have sodium hydroxide, potassium hydroxide, etc. 
Ding Xinda activated carbon carbon adsorption and carbon principle and adsorption price02021-11-29 22:43:36
Its adsorption is selective, and non-polar substances are easier to be adsorbed than polar substances.In the same series of substances, the higher the boiling point of the substance, the more tolerantEasy to be adsorbed, the greater the pressure,activated carbon from china  the lower the temperature, the greater the concentration, the greater the amount of adsorption.On the contrary, decompression and heating are beneficial to gas desorption.It is often used for gas adsorption,Separation and purification, recovery of solvents, decolorizing agents for sugar solution, grease, glycerin, medicine, deodorant for drinking water and refrigerators, filter agent for gas masks,It can also be used as a catalyst or metal salt catalyst carrier.Early production of activated carbon raw materials for wood, hard nut shell or animal bones, later mainly used coal, after dryingDistillation, activation treatment after the production of activated carbon methods are :① steam, gas activation method.Carbon is activated by water vapor or carbon dioxide at 850~900℃. gold coconut shell activated carbon activated carbon is a kind of very small granular has a large surface area, and more tiny holes in the granular - capillary. The capillary has very strong adsorption capacity, due to the granular surface area is large, so a good contact with with gas (impurities). When these gases (impurities) encounter capillary by adsorption, purification effect. Activated carbon surface area of the study is very important, only the BET specific surface area detecting data of active carbon method detected result is reliable, domestic at present there are many instruments can only make direct comparison method of detection, 
Ding Xinda activated carbon carbon adsorption and carbon principle and adsorption02021-11-29 22:42:41
With the rapid development of pharmaceutical preparation industry and primary molecular material industry, the microencapsulated activated carbon products coated with polymer materials have been successfully trial-produced in foreign countries, and applied in clinical practice, the medical care and treatment effect is very good, many of them have been put into the market, and have achieved good economic and social benefits. gold recovery activated carbon  It is worth noting that there is a shortage of activated carbon in China. For a long time, the production of drugs using activated carbon as raw materials has been kept in the laboratory, and no products have been marketed or used in clinical trials.coconut activated carbon factory  Experts said that with the continuous improvement of people's life quality and health care consciousness enhancement, as well as the rapid development of all kinds of industrial, environmental pollution has been increasingly serious, people an opportunity to contact with a variety of harmful material, activated carbon and activated carbon as the leading raw material to produce medicines and health products, medical market will become a major conventional leading consumer products, Market demand will be on the rise year by year, is a new economic growth point in the pharmaceutical and chemical market, its economic and social benefits will increase year by year. 
Combined Equations (5) and (10) can calculate the total amount of Pb and 21Bi atoms in activated carbon after adsorption for any length of time (i.e., the total number of activated carbon Y).Let n=0 in Equation (10), then the accumulation and attenuation 02022-01-14 22:57:28
Combined Equations (5) and (10) can calculate the total amount of Pb and 21Bi atoms in activated carbon after adsorption for any length of time (i.e., the total number of activated carbon Y).Let n=0 in Equation (10), then the accumulation and attenuation of total atomic amount of 2Pb and 2Bi (total number of activated carbon Y) after the removal of activated carbon can be calculated in Equation (10).In fact, if thin layer activated carbon is used, the value of N should be equal to the product of the adsorption coefficient of activated carbon and radon concentration, while the radon adsorption coefficient of activated carbon mainly depends on the type of activated carbon and is affected by temperature, humidity and other factors. gold adsorption onto activated carbon  When the radon adsorption coefficient of activated carbon is constant,n is proportional to the concentration of radon. In this case, Equation (10) represents the functional relationship among the total number of activated carbon V, radon concentration and adsorption (or exposure) time. Therefore, the concentration of radon in the environment can be calculated according to the total number of activated carbon and adsorption time.Simulation calculation and result analysis of total number of activated carbon According to Equations (5) and (10), a computer program can be written to calculate the relationship between the total number of Y in the process of radon adsorption on activated carbon and the relationship between the total number of Y after the removal of activated carbon and the change of time. activated carbon manufacturers uae  
Ding Xinda activated carbon carbon adsorption and carbon principle02021-11-29 22:41:57
② chemical activation method.Activated carbon can be obtained after high temperature treatment by using the gas released by the activator or soaking the raw material with the activator.Activated carbon has a micro product structure, the micro product arrangement is completely irregular, the product body has micropores (radius is less than 20[angstroms]=10-10 meters), through the hole (halfDiameter 20~1000), large hole (radius 1000~100000), so that it has a large inner surface, specific surface area of 500~1700 m 2/ g.This determines that activated carbon has good adsorption, can adsorb the metal ions in waste water and waste gas, harmful gases, organic pollutants, pigments and so on. gold coconut shell activated carbon  Industry should beActivated carbon also requires high mechanical strength, good wear resistance, its structure is stable, small energy required for adsorption, in order to be conducive to regeneration.Activated carbon for oilDecolorization, deodorization, gas separation, solvent recovery and air conditioning of fat, beverage, food and drinking water, used as catalyst or adsorbent for body and gas mask.Physical characteristics:Activated carbon is a kind of multi-aperture carbonization, has a very rich pore structure, has good adsorption characteristics, its adsorption by physical and chemicalAbsorbed from the force, the appearance of the color and lustre is black.Its composition in addition to the main carbon, but also contains a small amount of hydrogen, nitrogen, oxygen, its structure is shaped like a hexagon, due to the irregular hexagon structure, determine the characteristics of its body also incandescentand high surface area, each gram of activated carbon has the equivalent of 1000 square meters than the surface. 
Adsorption effect of nonpolar small molecules and carbon layer on activated carbon02021-09-14 01:10:33
Activated carbon adsorption, is the use of activated carbon on the solid surface of the water adsorption or a variety of substances, in order to achieve the role of water purification. The adsorption of activated carbon is produced in two aspects.One is that the molecules inside the activated carbon are subjected to equal forces in all directions while the molecules on the surface are subjected to uneven forces.This makes other points adsorbed on its surface, which is physical adsorption;The other is due to the chemical action between activated carbon and adsorbed substances, which is chemical adsorption.The adsorption of activated carbon is the result of the comprehensive action of the above two kinds of adsorption.activated charcoal pellets  When the adsorption speed and desorption speed of activated carbon in the solution is equal, that is, the number of activated carbon adsorption is equal to the number of desorption, the concentration of the adsorbed material in the solution and the concentration on the surface of activated carbon are no longer intermingled, that is, to achieve the balance, the dynamic balance at this time is called activated carbon adsorption balance. www.chinactivecarbon.com  

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