Coconut shell activated carbon guidance: raw materials, production process, manufacturing process, use, quality control, purchase, storage. This article will introduce: What is coconut shell activated carbon? Coconut shell activated carbon type? What are the uses of coconut shell activated carbon? How to buy high quality coconut shell activated carbon?

 

Introduction

Heavy oil burner is a kind of high-quality activated carbon, which is widely used for its unique adsorption properties, this article will take you to have an in-depth understanding of the knowledge of coconut shell activated carbon raw materials, production process, quality control, storage and transportation, etc. A comprehensive understanding of coconut shell activated carbon can better realize its efficient application in different scenarios.

This Article Will Introduce:

If you are interested in the above questions, please continue reading this article

Coconut shell activated carbon is produced from coconut shell as raw material.
The types of Coconut shell activated carbon according to the shape can be divided into coconut shell granular activated carbon, coconut shell powder activated carbon, coconut shell pellet activated carbon.

 

 

 

Raw material

 

Coconut shell is the shell of coconut fruit, hard texture, rich in cellulose, lignin and other organic components, is an ideal raw material for preparing activated carbon.

 

What are the advantages of coconut shells?

1.Natural pore structure: Coconut shell is hard and compact, with a unique pore structure, which lays the foundation for the formation of a stable and rich pore structure of activated carbon. After processing, a well-developed pore network can be formed, which gives the activated carbon excellent adsorption properties.
2.High carbon content: Coconut shell is rich in carbon elements and has a high carbon content, which provides a sufficient carbon source for the preparation of activated carbon. At the same time, coconut shell contains a small amount of hydrogen, oxygen, nitrogen and other elements. During processing, other elements are removed in the form of volatiles, and the high carbon content provides a guarantee for the formation of a carbon skeleton of high-quality activated carbon, which helps to improve adsorption performance and chemical stability.
3.Renewable resources: Coconut shell is a by-product of the coconut processing industry, which is a renewable resource with a wide range of sources and low prices, in line with the concept of sustainable development.
4.High carbon content: Coconut shell is rich in carbon elements, natural pore structure: Coconut shell itself has a unique pore structure, which can form a developed pore network after processing, giving activated carbon excellent adsorption properties.

Coconut is mainly grown in tropical regions, such as Southeast Asia, India, the Philippines and other places, where abundant sunshine and abundant precipitation produce high-quality coconut shells.

 

How is Coconut Shell Activated Carbon Manufacturing?

Step1  Raw Material Sieving and Abstersion
Collection: Fresh coconut shells without mildew and impurities are collected from coconut production areas to ensure the stable quality of raw materials.
Pretreatment: First, screen out impurities and damaged coconut shells, and then wash away the surface soil, dust, and residual pulp. After that, the coconut shells can be crushed to an appropriate particle size to facilitate the uniform occurrence of subsequent carbonization and activation reactions.

 

Step2  Carbonization
The coconut shell particles are subjected to carbonization treatment under high temperature and oxygen-deficient conditions. The organic substances in them decompose upon heating, such as moisture, wood tar, and wood gas, etc., thus forming carbonized substances rich in fixed carbon, namely carbonized materials.
 Temperature control of carbonization equipment: Rotary kilns, Slep ovens, etc. The carbonization temperature is generally controlled within the range of 400 - 600 °C. Within this temperature range, the coconut shells can gradually remove other components while retaining the pore structure of the coconut shells. The carbonization time varies depending on different equipment and raw materials, generally ranging from several hours to more than ten hours.

 

Step3  Activation
The cooled carbonized substances are fed into the activation furnace and react with activating agents (such as water vapor, carbon dioxide, etc.) at a high temperature (800 - 1000 °C). This reaction further expands and perfects the pore structure, increases the specific surface area and pore volume of the activated carbon, and thus the activated carbon is obtained.

Step4  Further Processing (Optional)
Washing: There may be residues of activating agents or other impurities on the surface of the activated carbon after activation. It is necessary to wash it with a large amount of clean water to remove these impurities and ensure the purity and performance of the product. The pH value of the washed coconut shell activated carbon should be close to neutral.
Acid Washing: Immerse the activated carbon in an acidic solution (such as hydrochloric acid, sulfuric acid, or nitric acid) for several hours. Acid washing can effectively remove impurities such as metal ions and ash in the activated carbon, optimize the pore structure of the activated carbon, and enhance its adsorption capacity.

 

Step5  Dring 

The activated carbon after washing contains a large amount of water and needs to be dried by a drying device to reduce its water content to a certain extent, generally controlled at about 5% - 10%, for the convenience of storage and transportation.

 

Step6  Screening, Quality Testing, Packaging

According to different application needs, the dried activated carbon is screened according to the size requirements, and the products with different particle sizes are separated to meet the requirements of different industries for the particle size of activated carbon. After the production of coconut shell activated carbon, it is necessary to undergo quality testing to ensure that the product meets ASTM standards.
Then it is stored in sub-package,Coconut shell activated carbon itself has relatively stable chemical properties. Under proper storage conditions (dry and sealed), there is theoretically no strict shelf - life, meaning it can be stored for a long time (5 - 10 years). However, its adsorption performance may decline over time and due to changes in storage conditions. Generally speaking, for unopened coconut shell activated carbon stored properly, the decline of its main adsorption performance indicators is relatively small within 2 - 3 years. That is to say, its quality hardly changes, and it can meet the needs of most conventional applications. But for some special application scenarios with extremely high and strict requirements for adsorption performance, such as the pharmaceutical industry and the preparation of ultrapure water in the electronics industry, it is recommended to use it within 1 - 2 years.

 

Applications of Coconut Shell Activated Carbon

 

1. Water treatment

-Drinking water purification: It can effectively adsorb residual chlorine, organic substances, heavy - metal ions (such as lead, mercury, cadmium, etc.) and odor - causing substances. This helps to improve the taste and safety of drinking water and ensures that the water quality meets the standards.

- Sewage treatment: In industrial and domestic sewage treatment, it adsorbs organic pollutants, such as phenols, dyes, pesticide residues, etc. It reduces the chemical oxygen demand (COD) and biochemical oxygen demand (BOD) of wastewater, and assists in subsequent biological treatment or enables the wastewater to meet the discharge standards.

- Pure water production: In industries with strict water - quality requirements, such as electronics and pharmaceuticals, it serves as a material for pre - treatment or advanced treatment to remove trace impurities and organic substances, ensuring the quality of pure water.

 

2. Air purification

- Indoor air purification: It can adsorb harmful gases such as formaldehyde, benzene, and ammonia, as well as odors. This helps to improve indoor air quality and create a healthy living and working environment.

- Industrial waste gas treatment: In industries such as chemical engineering and printing, it is used for the adsorption treatment of organic waste gases, such as volatile organic compounds (VOCs). This reduces the pollution of waste gases to the atmospheric environment, and at the same time, enables the recovery and utilization of some organic substances.

 

3. Food and Beverage Industry

- Decolorization and Refinement: In the production of sugars, oils, and alcoholic beverages, coconut shell activated carbon can be used to remove pigments, impurities, and odors from products, thereby improving the purity and quality of products, making them clear in color and pure in taste.

- Preservation and Storage: The preservatives made from coconut shell activated carbon can adsorb moisture and oxygen. Placed in the storage environment of food or beverages, they can delay the oxidation and spoilage of food and extend the shelf - life.

4. Pharmaceutical Industry

- Drug purification: It can remove impurities, pigments, and pyrogens from drugs, improving the purity and quality of drugs and ensuring the safety and effectiveness of pharmaceutical products.

- Drug storage: It helps prevent moisture, mold, and adsorb odors, maintaining the stability of drugs.

5. Other Fields

- Catalyst support: Due to its large specific surface area and good chemical stability, coconut shell activated carbon can serve as a catalyst support, loading various active components. It is widely used in catalytic reactions in fields such as chemical synthesis and petrochemical industry.

- Gold extraction: In the process of gold mining and smelting, coconut shell activated carbon can be used to adsorb gold ions in the ore leaching solution, enabling the enrichment and separation of gold and improving the gold recovery rate.

 

 

 

How to buy high quality coconut shell activated carbon?

 

1. Iodine value, methylene blue adsorption value,. A higher iodine value indicates a stronger adsorption capacity of activated carbon for small - molecule substances, while the methylene blue adsorption value reflects its adsorption performance for larger - molecule organic compounds. According to the actual application scenarios, such as treating water or air containing different pollutants, select products with high corresponding adsorption performance indicators.

2. Particle size and shape: Choose the appropriate particle size and shape according to the usage mode and equipment. For fixed - bed adsorption equipment, granular or columnar activated carbon is more suitable as it is convenient for filling and fluid passage. For liquid decolorization, etc., powdered activated carbon has a better effect due to its large specific surface area and sufficient contact.

3. Ash content: Ash is the inorganic impurity in activated carbon. An excessively high ash content will affect the adsorption performance and purity. Especially in industries with high purity requirements such as food and pharmaceuticals, products with low ash content should be selected.

4. Moisture content: An excessively high moisture content not only increases the transportation cost but may also affect the performance of activated carbon. Generally, the moisture content should be controlled within a certain range. Check the product description when purchasing.

5.Manufacturer and brand: Select manufacturers and brands with good reputations, mature production processes, and strict quality control. The quality and reliability of products can be evaluated by checking the manufacturer's qualification certificates, customer reviews, and product test reports.

 

Conclusion

 

Coconut shell activated carbon, as an efficient and environmentally - friendly adsorption material, plays a crucial role in various fields. With the continuous advancement of technology, it is expected to be applied in more areas, creating a better life for humanity.

read again  to TOP