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  • What is granular activated carbon treatment?
  • Granular activated carbon or “GAC” is a material used to filter harmful chemicals from contaminated water or air. It is composed of granules of coal, wood, nutshells or other carbon-rich materials that have been heated to “activate” the surface of the granules.
  • What is granular activated carbon (GAC)?
  • Granular activated carbon (GAC) is mostly used in aqueous solutions and adsorption columns for water treatment. Commercial AC is not only costly, but also obtained from non-renewable sources. This has prompted the search for alternative renewable materials for AC production.
  • What is granular activated carbon adsorption?
  • 1. Introduction Granular activated carbon (GAC) adsorption has found wide application as a treatment process for the removal of natural organic matter, pesticides, taste and odour in water over many years.1 During operation, these contaminants are adsorbed within the pores of GAC, which gradually become saturated with time.
  • Which water pollutants can be removed by a granular activated carbon (GAC)?
  • Water pollutants that have exhibited a greater removal efficiency by AC included but not limited to heavy metals, pharmaceuticals, pesticides, natural organic matter, disinfection by-products, and microplastics. Granular activated carbon (GAC) is mostly used in aqueous solutions and adsorption columns for water treatment.