The Benefits of a Carbon Filter

A carbon filter removes contaminants that affect taste and odor, including chlorine and gaseous pollutants like benzene. Look for a filter that contains loose-fill activated carbon to get the best results.


Different types of carbon offer varying levels of effectiveness. Coconut shell carbon, for example, is great at removing trihalomethanes but not coliforms.


Volatile organic compounds (VOCs) are emitted by human activities such as painting, transportation, petroleum products, printing ink, and fossil fuel use. They are also emitted by plants and animals. Some VOCs are harmful to humans. They can irritate mucous membranes, cause eye and skin symptoms, and even lead to cancer in high concentrations. Long-term exposure can even affect the liver, kidneys and central nervous system.

Carbon filters can effectively remove VOCs from the air. This is because of their porous structure and pore size distribution. The VOCs are physically attracted to the activated carbon molecules and held by them. The adsorption process happens as the air moves through the filter, changing gaseous molecules into solid particles that are then trapped by the carbon.

The pore size of the carbon is important because it affects the performance of the filter. The smaller the pore size, the less the VOCs will be adsorbed by the carbon. In order to get the best performance out of a carbon filter, it is important to know the BP and MW of the chemicals you are trying to remove.

Benzene is one of the most common VOCs that can be found in homes. It is a chemical in many cleaning products, including glass cleaners and dish soap. Benzene can irritate the eyes and nose, cause nausea and headaches, and may cause cancer in high doses. This is why it is so important to keep the levels of this VOC low in your home.


Fluoride is an essential nutrient for strong teeth and bones. It is naturally found in some foods and added to many other products, including water. However, it can be harmful in large amounts, especially for children.

It is important to know the level of fluoride in your home’s drinking water. The United States Environmental Protection Agency (EPA) offers a free online tool to check your water’s fluoride levels.

The developed active carbon adsorbent NVNC effectively decreases the fluoride content in real groundwater samples below permissible limits under the optimum experimental conditions. The adsorption process is characterized by the FTIR and SEM-EDX techniques. The characterization of the activated carbon adsorbent revealed that the pore surface of the adsorbent is covered by functional groups such as oxygen, phenol, and carbonyl.

Activated carbon is a versatile filter that can reduce many types of contaminants. The type of activation used in the manufacturing process determines how well it is able to absorb different chemicals. Typically, the more basic the pore structure, the better it is at adsorbing ions. It is also important to change your carbon filters regularly. When the pores become full, they may begin to break down and allow harmful contaminants to pass through. Changing your filters every six months to one year ensures optimal performance. Adding a carbon filter can help your appliances, such as your tankless water heater, last longer by removing chlorine and disinfection by-products like trihalomethanes.

Pet Smells

Many people have pets that can leave behind lingering smells. This can be from their litter box or from an accident that may have occurred on the floor or furniture. These odors release volatile organic compounds (VOC) into the air. Carbon filters are designed to trap these molecules, reducing the odors. It is important to keep in mind that while a carbon filter can reduce these odors, it cannot eliminate them completely.

When choosing a carbon filter, look for one with a high-quality activated charcoal that has been pretreated to increase its surface area. This increases the number of pores and its ability to adsorb VOCs and odors. The thickness of the carbon also matters. Thicker carbon filters last longer than thinner ones.

Activated carbon is used in water and air purification, as well as in industrial gas processing. The carbon itself is produced from a variety of sources, including coconut shells, peat, and bituminous coal. It is then heated with steam to create millions of tiny pores.

When paired with other technologies, such as a chemisorbent, carbon can be effective at eliminating odors. Ozone generators can help with this, but it is important to note that ozone only masks odors rather than removing them entirely. This is why it is recommended to pair an ozone generator with a carbon air filter in order to get the best results for removing pet smells and other unpleasant odors from the air.


Although bacteria are often a major cause of illness and disease, a few species of bacteria are vitally important to life. Bacteria are microscopic, unicellular organisms that resemble single-celled plants. They are everywhere, and in fact, a single gram of soil contains millions of bacteria cells. They are known for their role in causing diseases such as tooth decay and the Black Plague, but also perform many beneficial functions such as breaking down organic materials in the environment, recycling nutrients to other organisms, helping ruminant animals digest plant cellulose, and fixing nitrogen from the air into a usable form.

Carbon filters remove chemicals and contaminants using a process called absorption, or adsorption. Water and contaminant molecules have polarity, meaning they stick to each other like Velcro. Carbon has a vast surface area, and it can absorb a wide range of chemicals and organic compounds including VOCs and bad tastes and odors.

Activated carbon has small pores, which make it very effective for removing VOCs and odors. However, a carbon filter’s effectiveness depends on the type of contaminants and the size of the pore openings.

The most common carbon filter is granular activated carbon (GAC), which has a much larger surface area and can treat a broader range of chemicals and organics, including chlorine and its by-products. Solid carbon block filters, on the other hand, are densely packed and have very tiny holes. These types of filters are most effective against bacterial contamination. They are the only type of filter that can remove cryptosporidium, a potentially deadly parasite that thrives in crowded conditions.