Coconut Shell & Wood Activated Carbon


Sources of these contaminants might include solvents, pesticides, industrial wastes, or contaminants from leaking underground storage tanks.

Contaminants such as benzene, chlorobenzenes, trichloroethylene, carbon tetrachloride, methylene chloride, and vinyl chloride in drinking water may pose health risks if they are present in quantities above the EPA Health Advisory Level (HAL). Pesticides, such as Atrazine, also can pose a health risk if present in quantities above EPA guidelines. Activated carbon (AC) filtration can effectively reduce some of these organic chemicals as well as certain harmless taste and odour-producing compounds.

Some drinking water may be disinfected with chlorine or chloramines. During disinfection the reaction of chlorine with organic matter can produce compounds such as trihalomethanes (THMs) as byproducts. These disinfection byproducts may increase the risk of certain cancers. The EPA mandates that public systems have less than 80 parts per billion (ppb) of THMs in their treated water. Activated Carbon filtration can be effective in removing chlorine, chloramines, and some disinfection byproducts.

This granular activated carbon is used for water treatment applications in fixed bed media filters. It is used for removal of taste, odour, chlorine, and dissolved organic contaminants from potable and process water. It is also used in DM plant filters, Tap water filters, Desalination plants, and Aquariums.

Common carbon mesh sizes used for water purification are:

  • 8×16
  • 8×20
  • 8×30
  • 12×30
  • 12×40
  • 18×40


Our GAU series ECOBORN carbon products offers superior performance in terms of providing the highest gold adsorption capacity (K value), rate of adsorption (R value), superior hardness and abrasion resistance. Our Gold Carbon products provide our customers with exceptional value by maximizing yield while minimizing loss.

Activated carbon is a highly porous organic material comprised of a series of graphitic plates, which are interconnected by carbon-carbon bonds. This creates a highly porous structure and gives an extensive internal surface area, where “adsorption” occurs. Adsorption is a surface reaction that causes compounds to “stick” to the surface of the carbon. The phenomenon is the result of intermolecular attractions or forces inherent to the carbon surface.

In gold recovery applications, adsorption forces remove gold from solutions and adhere the metal complex to the carbon surface. Because the reaction occurs at the surface of the carbon, the adsorption process is relatively easy to reverse, a process called “desorption.” While it is important to maximize the adsorption of gold from the solution, it is equally as important to subsequently desorb the gold from the carbon. Any molecules that remain adsorbed after elution or stripping translate into gold that cannot be recovered. As a result, it is important to select an activated carbon that efficiently adsorbs and desorbs to maximize overall yield and profitability.

In physical adsorption, contaminants are adsorbed and held on the internal Activated Carbon Structure surface of activated carbon due to Van der Waals Forces of attraction between the carbon atom and the molecule. The force of attraction diminishes as the distance between the pore wall and the adsorbate molecule increases.

Gold alone is not soluble, and will not be readily adsorbed by activated carbon until it is cyanidated, forming a gold-cyanide coordination complex called dicyanoaurate. It is this gold-cyanide complex that is attracted to the tremendous surface area available on activated carbon, allowing for a variety of recovery techniques. One handful of activated carbon has a surface area equivalent to that of a football field. The massive surface area of activated carbon makes the material an ideal adsorbent.

Activated carbon can be produced from a variety of different precursors, including coal, coconut, wood, and lignite, which are the primary materials used to make commercial-scale activated carbon. The starting material dictates the pore size distribution of the final activated carbon product. Typically, coconut is the precursor for gold recovery applications because of its tight pore structure, high activity pores, and hardness.

Common carbon mesh sizes used for water purification are:

  • 6×12
  • 8×16


Contaminants absorb onto the surfaces of the activated carbon grains. The thermal processing of carbon, often from coconut shells, creates small porous particles with a large internal surface area. This processing activates the carbon. The activated carbon attracts and adsorbs organic molecules as well as certain metal and inorganic molecules. When the concentration of contaminants in the vapor exiting the vessels exceeds a certain level, the carbon must be replaced. Spent carbon can be regenerated in place; removed and regenerated at an off-site facility; or most commonly, removed and disposed.

Vapor Phase Carbon Adsorption Systems are designed to remove certain gaseous contaminants, including Dioxins/ Furans, Hydrogen Sulphide, Hydrogen Chloride, Ammonia and Mercaptans.

Rapid economic development and urban population growth have triggered a series of challenges to the endeavors of maintaining the clean air. Urban air is cause of public concern, largely as a result of instances of smog and health problems. New pollutants are being increasingly recognized. Air pollution sources have grown and so also the pollutants. Some of these have led to the emission of some hazardous air pollutants like Volatile Organic Compounds (VOC). VOCs are chemicals that have high vapor pressure exceeding 0.5 kPa at 25⁰ C, like benzene, toluene, xylene, formaldehyde, and methylene chloride. Major VOC emission sources are automobiles exhaust (45%) followed by industrial sites (41%) and remaining from solid waste disposal and from miscellaneous sources.

The acute and chronic effects of VOCs on health and environment include eye-nose-throat irritation, cancer, liver damage, and kidney damage. Hence, many VOCs have been identified as toxic and carcinogenic. Approximately 235 million tons of VOCs are released every year into the atmosphere by man-made sources. The subject has become important because of the impact on environment and human.

Common carbon mesh sizes used for Vapor Phase are:

  • 3x6
  • 4x8
  • 6x16


Wood carbons possess outstanding decolorizing attributes due to their particular unique porosimetry. Their high surface area seen as a significant percentage of mesopores and macropores generates a fairly low density along with an environmentally friendly and renewable supply of raw materials. Wood Based Powder Activated Carbon is used for decolorizing in sugar liquors, juices, soybean, and food industries.

Wood powder activated carbon is non-toxic, without taste and it has the appearance of a fine black powder. Offering a sizable surface area, and robust adsorption abilities, it is perfectly suited to water clarifying and purifying within the production of sugars, pharmaceuticals, beverages and also wines. It is also used around the globe for waste water treatment as well as in the decolorizing, refining, and purification of organic solvents.


The particle size of GFL filter series carbon has been selected to give maximum adsorption rates and reasonable pressure drop characteristics with liquors of relatively low viscosity.

It is made from a superior quality activated carbon with low ash, sulphur, and phosphorous content. It has a large surface area, high pore volume, high mechanical hardness and chemical stability, longer operating life, and it is easy to regenerate.

20×50 is a virgin granular activated carbon designed specifically for point-of-use water treatment applications where impurities are removed in drinking water filtering units with short contact times

Common activated carbon mesh sizes used in ECOBORN GFL series are:

  • 20×50
  • 20×60
  • 20×70