Coconut shell activated carbon exhibits unique advantages in water treatment applications, primarily stemming from its raw material characteristics, physicochemical properties, and optimized processing.

High Adsorption Performance and Selectivity: Coconut shell activated carbon possesses a well-developed pore structure and a high specific surface area (typically 590-1500 m²/g). Its iodine adsorption value can reach 700-1250 mg/g, and its methylene blue adsorption value 100-210 mg/g. This gives it a strong adsorption capacity for organic pollutants, pigments, and odor substances in water. For example, in water purifiers, its removal rate of free chlorine can reach 99-100%, and its specific surface area and pore structure are superior to coal-based activated carbon, resulting in higher adsorption efficiency. Excellent Mechanical Strength and Stability: Coconut shell activated carbon generally has an abrasion resistance of ≥80-95%, with some high-standard products reaching 99%. Its uniform and full particle structure makes it resistant to breakage, ensuring long-term stability under water flow impact, reducing filter media wear and replacement frequency, and making it suitable for high-pressure applications such as filter columns.

Low Density and Ease of Handling: With a bulk density of 0.35-0.55 g/ml, it is lightweight, floats for a long time, and is easy to transport, store, and fill. The low density also means more adsorption sites per unit volume, improving treatment efficiency per unit volume.

Safety and Environmental Compliance: The heavy metal content of coconut shell activated carbon is strictly controlled (e.g., arsenic ≤10 ppb, lead ≤200 ppb), ash content ≤5%, and pH value is neutral (6.5-11), meeting drinking water safety standards. It is non-toxic and has no side effects, making it suitable for direct drinking water treatment. The silver-impregnated activated carbon version also inhibits bacterial growth and reduces the risk of nitrite formation.

Multifunctionality and adaptability: In addition to conventional purification, coconut shell activated carbon can be modified to efficiently remove trace amounts of harmful substances such as benzene, formaldehyde, and TVOCs. It can also be used for industrial wastewater decolorization, solvent recovery, and gas separation. Its strong regeneration capacity allows for repeated use, reducing long-term treatment costs.