Activated Carbon

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For many years, carbon has been used as an agent to remove impurities from air and water. Activated carbon is one of the most effective absorbents currently used. Activated carbon is carbon which has a positive charge added to it, which makes it much more effective at absorbing impurities and chemicals. An activated carbon filter works by the law of attraction. When water passes over the positively charged carbon, the impurities in the water which have a negative charge will be locked into the activated carbon filter.
Usually activated carbon filters use either granular activated carbon or powdered block carbon. Both types of filters are effective, however the powdered block carbon filters do tend to remove more impurities than its counterpart.

The efficiency of activated carbon filters are dependant on two factors. First, the amount of activated carbon which is contained in the filter and second, the amount of time the impurities stay in contact with the carbon. Of course the more carbon there is in the filter, the better it will do its job. Contact time of the impurities and the carbon can be affected by the flow rate of the water, thus slower running water is best.

The more carbon you have, the better your results will be. If you set your water to a lower flow rate, the carbon will have more time in contact with the water contaminants, enabling the carbon to absorb the contaminants much better.

When you purchase your activated carbon filter, keep in mind that they are rated based upon the average size of the particles they are able to remove, the most effective one being rated at 0.5 microns. The least effective activated carbon filter you can buy is rated at 50 microns.

Most counter top activated carbon filter systems contain between twelve and twenty-four ounces of actual carbon. There are three main carbon types that can be used for the purpose of water filtration: coconut shell, wood, and bituminous carbons. The most expensive of the three is the coconut shell carbon; however, it has been proven to be the best out of the three types.

Activated carbon is able to remove contaminants from your fish tank via two different methods, either through absorbing the contaminants, or through catalytic reduction, in which the negative ions contained in the contaminant are drawn to the positive ions that make up the carbon. Generally, organic particles can be removed via absorption, while chemical contaminants, such as chlorine, are removed by catalytic reduction.

Many home water purifying systems use activated carbon filtration. Activated carbon filtration helps to remove the chemical bad taste from your tap water, absorbs unpleasant odors, and takes out many of the chemicals used in the water treatment process, such as chlorine. It also helps to remove many organic water contaminants as well.

Activated carbon filters can also help remove many of the heavy metal compounds that are found in your tap water. Some more expensive activated carbon filters have been proven effective at removing some of the iron, hydrogen sulfide, and manganese that live in tap water.

There are some inorganic particles that cannot be absorbed by activated carbon filters, such as arsenic, asbestos, cadmium, chromium, copper, fluoride, thallium, and mercury. To remove these kinds of contaminants you have to have either a reverse osmosis filter system or a water distiller.

Adding a sediment filter can help make your activated carbon cartridge last much longer as it removes larger particles that can possibly cause a clog, limiting the effectiveness of your activated carbon. To remove large quantities of sediment, you should consider using a carbon block filter rather than an activated carbon filter.

The good thing is that you don’t have to do very much maintenance for your activated carbon filter, other than make certain it gets replaced as needed. To prevent your water quality from being effected, make sure that you change the filter promptly as recommended by the manufacturer.
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Activated Carbon

has been viewed times since June 30, 2009.