The ocean occupies most of our planet, and desalination has been used more and more widely over the past 20 years. How to pick the best one for your CTO or GAC? However, strong adsorption of GAC can perform perfectly in the same situation. The looser nature of GAC filters means that they provide a much higher flow rate, which essentially means that you can purify much more water in less time.ĬTO filter is full of fine holes, so its ability of decolorization is excellent, but it is easy to lead to a plug problem. Generally, CTO filters can filter more contaminants than GAC filters, due to their more compact structures. In contrast to the particles used in GAC filters, the carbon particles in a block filter are typically five to twenty times smaller. Filtration AccuracyĪlthough both the CTO and GAC filters use ground carbon, the CTO filter element’s carbon is typically processed into a considerably finer powder. After combining this powder with a food-safe binder, the mixture is heated up and squeezed to form a solid block. Instead, activated carbon is ground into a fine powder to create carbon block filters. The carbon used to make granule-activated carbon filters has been mashed up and is loosely held together inside a cartridge or another container. ![]() ![]() Granule Activated Carbon Filter Element vs Activated Carbon Block Filter Element Structure ![]() Adsorption means that contaminants are attracted to the surface of the activated carbon and held to it, much the same way a magnet attracts and holds iron filings. Some of the most common sources of carbon are bituminous coal, wood, and nutshell.Ĭarbon filters remove contaminants through adsorption. There are a variety of raw materials used to make carbon block filters. The carbon block filter compresses loose carbon blocks together to form a filter. In the carbon block filter, one pound of compressed activated carbon (the amount in a standard 10-inch filter cartridge) has a surface area equivalent to 160 acres of farm, making it one of the most absorbent materials known to man.
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