What specific substances in water can activated carbon adsorb?
The activated carbon used for water purification is mainly coconut shell activated carbon. The specific surface area of coconut shell activated carbon is 950-1200M2/g, and the larger the specific surface area, the better the actual adsorption effect.
Activated carbon can remove odors, saturation, permanganate index, colloidal solutions, organic compounds (metal cutting fluids, fertilizers, herbicides, insecticides, synthetic dyes, trihalomethanes gas, haloformic acid, endocrine disruptors such as phthalates PAES, etc.), heavy metals exceeding the standard (such as mercury, silver, cadmium, chromium, lead, nickel, etc.), radioactive elements, etc. It is the earliest and most commonly used water treatment material in water purifiers.
In household RO water purifiers, as well as most ultrafiltration membranes, porcelain, KDF, UV and other water purifiers, activated carbon is used.
Activated carbon is usually made from raw materials such as fruit pits, tree seeds, etc., heated at high temperatures under gas barrier conditions, and continuously introduced into water vapor to remove chemical substances such as wood gas and tar that dissolve due to heat. Its main component is charcoal, so it looks black and sticky.
And activated carbon is covered with tiny pores inside and outside, so its area is very large. According to calculations, the area of 1 gram of activated carbon has reached 500-1000 square meters. This promotes the strong adsorption ability of activated carbon.
Because activated carbon is physically adsorbed, has no environmental pollution, no side effects, and is of high quality and low cost, it is a common raw material for filter cartridges in water purifiers. Overall, activated carbon can adsorb permanganate index, odor, saturation, algae and plants, and kill bacteria in water.
Activated carbon, due to its loose structure and relatively large surface area, has strong adsorption properties, mainly for removing discoloration and odors.
In the process of cleaning drinking water, activated carbon adsorption cleaning is generally used after filtration At this point, the water obtained is already quite responsive, with small amounts of insoluble impurities, more soluble impurities (calcium and magnesium chemicals), odor, and color
【1】 Can adsorb small amounts of insoluble impurities remaining in water
【2】 Absorb the vast majority of soluble impurities
【3】 Absorb odors in water
【4】 Absorb the colors in the water, making it more transparent and responsive