Category Archives: activated alumina

peroxide Removal from THF using activated alumina balls
December 4, 2017

Chemical compounds when stored for a prolonged period and later when exposed to air and light undergo slow oxidation and lead to the formation of Peroxide, which can be visualized in the form of Crystals. The Peroxide thus, formed get detonated on combining with other compounds or when disturbed due to fiction or heat resulting in an explosion. This is because of the Chemicals or Chemical compounds having oxidation and reduction center within the same molecule. Thus, such chemical compounds are instable and undergo auto-decomposition even on exposure to Sunlight. The Presence of peroxides can be detected by using Peroxide test strips. The change in the colour of the strips indicates the presence of Peroxide.

peroxide Removal from THF

Peroxide forming chemicals include Di-isopropyl ether, Di-vinyl acetylene, Sodium amide, Vinylidiene Chloride, Dioxane, Diethyl ether, Tetra hydro Furan. Among these Tetra hydro Furan(C4H8O) also known as Oxolone, is a solvent which is most often used in manufacturing of Rubber, Plastics, Dyes, PVC pies and even in food storage and Packaging material.

THF(Tetra Hydro Furan) PeroxideTest:

Presence of Peroxide indicates the formation of Tetrahydrofuran peroxide formation in the solvent, which can be established by performing THF peroxide Test which gives the concentration of peroxide level in THF solvent. In this test Peroxide test strip is placed in the solvent for 1 second, and then removed. If the strip turns deep blue, green or brown it indicates high peroxide levels in the solvent. The gradations on the color scale 0,5,60,250 and 500ppm indicates the concetation of the peroxide level in THF.

THF peroxide test

Therefore, proper handling of THF{Tetra hydro Furan)Mfg is necessary as it stimulates  the rate of peroxide formation within a short time. By following the guidelines by EH&S, which are given below not only slows down the rate of peroxide formation but also prevents the peroxide contamination.


Best Guidelines for removal of peroxide from THF (Tetra Hydro Furan)

  • Identification: Based on peroxide formation, Identify the Chemical, which are classified into

Class A: Severe Peroxide Hazard, which need to be disposed off within 3 months if opened.

Class B: Concentration Hazard, need to be disposed off within 6 months if opened.

Class C: Shock and Heat Sensitive, need to be disposed off within 6 months if opened.

Class D: Potential Peroxide forming Chemicals need to be disposed off only if peroxide crystals      are Present.

Therefore, THF (Tetra Hydro Furan)Mfg is considered as a Class C, Chemical as it is Shock and Heat Sensitive.

  • Handling: Handle the peroxide forming chemicals, such as THF (Tetra Hydro Furan)Mfg only when labeled with Date received and Date opened .
  • Storage: Do not store, Peroxide forming Chemicals such as THF (Tetra Hydro Furan)Mfg in direct sunlight as it accelerates peroxide Formation. Store in a tightly closed, air-impermeable, light resistant containers.
  • Disposal: Peroxide forming Chemicals, such as THF (Tetra Hydro Furan)Mfg must be disposed off, even if unopened within a time frame of 1year.

Procedures for the Removal of Peroxides in THF (Tetrahydrofuran) Mfg:  

Procedures for the Removal of Peroxides in THF (Tetrahydrofuran)

Removal of peroxides is performed by various methods, in which absorption by Activated Alumina is considered as an efficient process. Removal of Peroxides is possible only if the concentration of peroxide, in parts per million is low, such as-

  • If the concentration of Peroxide level is less than 30ppm, it is considered has Hazardous. Thus formed peroxide is removed either by Distillation Process or by Evaporation process or by Chromatography process.
  • But if the concentration of Peroxide level is greater than 30ppm, it is considered has deadly Hazardous and need to be disposed off  carefully using a suitable procedure.


Distillation process is employed for the THF(Tetrahydrfuran)mfg containing only 0ppm of Peroxide. In this process the THF fraction of vapour steam is absorbed by the Activated Alumina Balls after which a multi-stage distillation is run which gives a peroxide free THF.Since, Distillation eliminates the inhibitor if present , enhancing peroxide formation, it is a less often used procedure.

Evaporation :

Evaporation process requires a significant amount of heat, which is why employed for removal of low level of Peroxides. Since this evaporation process is performed in a rotary evaporator containing round bottomed flask, only low level peroxides which possess less hazard are said to be subjected to Evaporation. Hence it is considered as the safe procedure only for low Volumes of THF(Tetrahydrfuran)Mfg.


Column Chromatography which consists of a glass tube with bottom portion of the column packed with glass wool or cotton wool, above which the absorbent, Activated Alumina powder slurred is poured and a paper disc is placed above it. Then peroxide contamiated THF(Tetrahydrfuran)Mfg solvent is added to the column, which slowly passes through the packed column and gets eluted on removing the glass wool which is collected in a brown glass bottle . The Peroxide free THF(Tetrahydrfuran) thus obtained is filled with an inert gas to prevent reformation of Peroxide on contact with Oxygen. The peroxide absorbed by the Activated Alumina in the Column is then flushed with suitable dilute acids such as Potassium Iodide or Ferrous Sulfate in order to remove the peroxide that is absorbed.

peroxide Removal from THF using activated alumina power via chromatography

THF(Tetrahydrfuran) being a water-misscible organic solvent, is passed on through Activated Alumina,in  the Column , which absorbs the peroxides present in the Solvent .In Chromatography, Absorbent plays a main role in peroxide removal . On the other hand Activated Alumina being available in Activated Alumina powder form and Alumina Ball form absorbs the peroxides at a faster rate.


Activated Alumina being porous in nature with a high surface area absorbs Peroxide by intermolecular attraction force, until equilibrium is attained between the Solvent and the Solute in the Column. As the Activated Alumina can be slurred it act as a best Absorbent to yield high efficient peroxide free THF(Tetrahydrfuran).


Alumina under heat or pressure gets molded into a solid mass material and is referred to as Alumina Balls. Alumina Balls act as a Catalyst better than absorbent because of uniform and regular shape increase the distribution of the THF solvent, thereby holding the contaminant, i.e, Peroxide .


Alumina under heat or pressure gets molded into a solid mass material and is referred to as Alumina Balls. These are white in color, spherical in shape and they are available in a size ranging from 25mm to70mm.Activated Alumina Balls which act as Catalyst in Hydrogen peroxide production is also used to trap the peroxides when the THF (Tetrahydrfuran) peroxide solvent is run through the Vertical Columns containing Activated Alumina Balls.

Activated Alumina price hike seems to be inevitable with the growing need at Industrial level as well as for new technologies and researches.

activated alumina balls

Uses Of Activated Alumina:

  • Commercially available techniques for water purification such as Ultra filtration, Membrane separation, Reverse Osmosis , Adsorption and many more rely on the sorbent – Activated Alumina.
  • Activated Alumina is also used for Hydrogen Purification, Feedstock drying, Solvent Purification.
  • Drying CO2 in Breweries, inert gas drying, Removal of H2S from natural gas , Polymer Purification is also performed by Activated Alumina.
  • LPG sweetening, Propane Sweetening, LNG sweetening is also achieved through Activated Alumina.
  • TBC removal from Styrene, Butadiene during Polymerization is also carried on by Activated Aumina.

December 13, 2016

What are Activated Alumina Balls?


Activated Alumina BallsActivated Alumina Balls are a commonly used desiccant. They are in demand mainly for two reasons- large surface area and high absorption qualities. Other properties of Activated Alumina Balls, which add to its popularity are 1) its insolubility in water 2) easily dissolving in acids and alkalies. Both these properties make it the best desiccant for absorbing toxins and harmful substances from the surroundings.


Main Features of Activated Alumina Balls


Activated Alumina Balls have many distinct features. Some of the main ones are listed below:


1) Highly recommended for removing moisture from gases.

2) High degrees of porosity and more surface area.

3) Best suited for compressed air drying systems.

4) Remains physically and chemically intact during high temperatures.

5) Can remove many fluoride molecules from drinking water.


Different Uses of Activated Alumina Balls

Air Drying Desiccants

Activated Alumina Balls have uses across various industries. These include water purification, thermal swing adsorption process, oil filtration, air and gas drying, heated and heat less drying process. Among all the uses, the main use of Activated Alumina balls is in purification of drinking water. In this process, the Activated Alumina balls are first placed in the water that has to be purified. As the pH and alkaline levels of the water is low, more fluoride molecules will be attracted to the Activated Alumina desiccant. In this way, the water meant for drinking and household purposes is purified and freed from impurities and harmful substances.


The biggest advantage of using Activated Alumina balls in water purification is that as the desiccant has numerous pores, it can attract more fluoride molecules over a larger surface area. This translates into more impurities being taken in over more areas. The water meant for purification usually contains 2ppm (parts per million) fluoride levels before filtration. This water is then passed through Activated Alumina filters. After purification, the water is found to contain fluoride levels less than .1ppm. This shows how effective Activated Alumina balls are as a desiccant.


Suppliers of Activated Alumina Balls


With so much demand for Activated Alumina balls, it is important to ensure that the supply of these desiccants is done in a proper and efficient manner. One of the most well-known suppliers of Activated Alumina Balls in the country is Sorbead India. The company is committed to bring to its clients reasonable wholesale Activated Alumina Prices. The Activated Alumina prices being offered by Sorbead India are at par with any of our competitors. Keeping all these factors in mind, it is a good idea to buy Activated Alumina from Sorbead India. The company was set up in 1996 and today is one of the leading suppliers and distributors of Desiccants and Adsorbents in the country.

April 8, 2016

In spite of having so many gas drying desiccants out there in the market, there has a strong significance why people (those who need to use these desiccants) are fond of activated alumina when it comes to dry out a warm gas appropriately. One of the prime reasons is that these balls are formulated with aluminum oxide which is highly porous and possess a tremendous surface area which let them soak up the gas and water molecules on a large scale. The surface normally ranges from 345-415 square meter/gm and this wide surface makes this element adsorb more gas, moisture, water vapor and humidity, even more than silica gel as well. For having such a higher capacity of gas consumption at an elevated temperature as well, it is an obvious choice for the various industrial purposes like; purification, isolations etc.

The alumina has a resistant power from thermal shock and abrasion, more so, they don’t get shrink, swell, soften and not even they disintegrate when completely saturated into gas. The element is formulated with aluminum hydroxide and the process is called dehydroxylation. Successful accomplishment of the process results in production of highly porous material with a huge surface area. It is made of aluminum oxide (Al2O3) and exhibits a high surface area compare to its weight and because of these, it has lots of small pores which run throughout it.


This Gas drying activated alumina is generally used for warm gases like hydrogen sulphide, sulfur oxide etc. including air as well because it has higher water absorption capacity even at a high temperature. This chemical substance doesn’t make so much of physical changes after getting immersed into gas molecules. Despite being used as an adsorbent, the activated form of alumina also possess catalyst applications in the form of alumina balls which includes the absorption of catalyst in the production of polyethylene. The utilization of activated alumina AD101 ranges from the purification (mainly removing metallic traces, TBC and HF compounds) of gases and liquids, drying out organic liquids such as LPG, propylene, butane etc.


The desiccation of gases includes steam cracked gases, catalytic reforming gases, synthesis gases, methyl chloride and natural gases etc. and it also dry out oxygen, nitrogen, hydrogen, CO2. The most enchanting fact is that this form of alumina can be regenerated when it is entirely drenched with gas molecules by heating up the alumina at around 2000C as it releases the gas molecules at then.

April 7, 2016

You must have come across few products that highly vulnerable when come into the contract with moisture and or water vapor. What should you do to keep these products free from these damaging aspects? The best way would be to use an activated form of alumina that is available in the form of small balls in order to prevent the damages. These balls are highly efficient to absorb the moistures and water-vapors from those applications where purifying the air is of much importance to obtain a clear product.

Generally, these balls are manufactured by heating the aluminum oxide at a very high temperature. To talk about the some characteristics of these balls, these are odorless, non-toxic, and insoluble in water and doesn’t contain any taste and these features together make the desiccants a quintessential choice for those several applications that generally take place in petrochemical and acid industry. These balls are helpful for drying out the cracked gas, ethylene, propylene, hydrogen and few other components as well. Furthermore, these desiccants have the ability to soak up the polluted materials as well such as hydrogen sulphide, sulfur oxide, hydrogen fluoride etc.


These activated alumina balls work mostly as desiccants. The process, through which these balls are manufactured, is called as dehydroxylation from aluminum hydroxide. The balls are available in a number of sizes and shapes which provide the flexibility of selecting the alumina balls as per the requirements of the particular application and the moisture capacity. Practically, these balls are perfectly alright desiccants for different applications where high absorption quality is required. The powerful activity of these drying balls is really appreciated for various industrial purposes.

Arcinic-Removal (1)

The activated alumina F200 is a powerful air drying desiccant which has its applications extended for separation and purification of a number of industrial applications. The industries where the utilization of these desiccant balls are mostly observed are chemical, petrochemical, air & gas, fertilizer etc. and these balls do not have the tendency to shrink, swell or become soften when they absorb water and not then as well when they are completely drenched with moisture. The effectiveness of these balls includes the uses as preservations as well. These activated alumina balls preserve the products from the damaging effects of humidity, mold, and constructional flows leakage etc.

The utilization of these activated desiccant balls includes the applications in compressed air dryer system, drinking water defluorination, desicator and purifying agent and air drying with PSA and TSA process.

April 7, 2016

A tremendous growth in the industrial area all over the world has been witnessed over the last few decades. The growth of any industry is directly proportional to its products and successful manufacturing of those products depends on various other elements. There are a number of natural effects that can cause significant impact on any industry and to its products as well. Water or moisture in the air is one such reason that may cause damage to the products related to chemical industry, pharmaceutical industry, food industry, electrical industry etc. In order to keep the products safe from moisture and water, various adsorbents or desiccants are used.

Now what are these desiccants? A desiccant is a substance that is used to remove water or moisture or for the purpose of purification of any particular product and any mixture of different substances. Different kinds of desiccants are used for different purposes. Some of those desiccants are silica gel, alumina oxide, zeolite, etc. The application of alumina oxide as a desiccant is largely seen in the industrial sectors. The best part of these desiccants is they don’t create any sort of reaction with any compound. These adsorbents (desiccants) are tasteless, odorless and are normally available in different forms other than solid one.


Talking about the desiccants, the name activated alumina is bound to arise since it is one of the most effective and well-known adsorbents, used in various industrial areas. It is basically a form of aluminium oxide and is widely used to keep important industrial products away from the effects of moisture and water. Alumina is vastly used for the purification of different complex mixture of compounds and for dehydration of compounds. There are lots of structural differences between alumina and silica gel which makes alumina a comparatively effective adsorbent for purification or dehydration.


Activated alumina is used for warm gas drying activated alumina because of its capability to work absolutely fine as a water adsorbent in higher temperature as well. This alumina is available in different sizes and in different specifications. Depending on the purpose and the nature of the substances need to be separated those specifications are applied. When it comes to adsorbing water from organic liquids such as LPG, Propylene, gasoline, steam etc, alumina is considered as the most preferred choice. Some of the features of these alumina balls are they are highly resistant to thermal shock, the surface area is excellent. They never shrink or swell in the water, they work completely fine at higher temperature.
Alumina is vastly available through online now. Numerous reputable adsorbents manufacturing companies are now offering their products through online now for the convenience of the industries.

February 23, 2016

Activated alumina ball is used for a wide range of adsorbent & catalyst application. Activated alumina balls grade is used in PET Drying, Polyester Chips Drying, manufacturing process of hydrogen peroxide. Activated Alumina Ball is a selective adsorbent for removal of impurities like arsenics and fluoride from drinking water.

Activated Alumina Balls grade is used for drying of air, gases, and liquids. Purification and conditioning of insulating oil and Industrial oils.

Activated Alumina Ball is highly efficient with large porosity and high surface area as high as 345-415 m2/gram. Activated Alumina Balls is very stable, physically and chemically in higher temperature and environment. For air drying and achieving better dew point alumina ball is widely used.

Activated Alumina Ball is widely used in gaseous and liquid desiccation in petrochemical industries. Activated Alumina Balls grade used in the Dryer in Textile industry, Pharmaceutical Industry and Pneumatic Operations.

Activated Alumina Ball will remove Total Acid Number from transformer oil, lubricating oils and refrigerants degradation’s acid up to use.

Activated Alumina Balls for instrumental air drying and for liquid and gas drying.

Activated Alumina Ball is having an excellent air drying capacity for a wide variety of liquids and gases.

High adsorption capacities of Activated Alumina Balls are due to high surface area and uniform pore distribution. Activated alumina ball can offer better dew point as high as -40 °C with proper design and effective regeneration. Uniform ball size of activated alumina ball is especially useful in high pressure gas drying and thus minimizing pressure drop. Low attrition rates of Activated Alumina Balls ensures less dusting during transport and service life which reduces pressure drops and minimizes outlet valve chocking and filter chocking. Activated Alumina Balls are the best suitable for drying of acid containing gases and liquids like CO2.