{"id":27412,"date":"2022-10-04T10:06:00","date_gmt":"2022-10-04T08:06:00","guid":{"rendered":"https:\/\/hifi-filter.com\/tout-savoir-sur-le-charbon-actif\/"},"modified":"2022-10-04T11:18:02","modified_gmt":"2022-10-04T09:18:02","slug":"all-about-activated-carbon","status":"publish","type":"post","link":"https:\/\/hifi-filter.com\/en\/all-about-activated-carbon\/","title":{"rendered":"All about activated carbon"},"content":{"rendered":"
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Activated carbon is a porous material with multiple benefits that has been tested and approved over the centuries. Obtained by carbonising and then activating a vegetable organic material, activated carbon is an adsorbent<\/strong>. Adsorption<\/strong> (different from absorption) is a physical phenomenon where a porous surface attracts and then captures polluting molecules in its pores. <\/div>\r\n<\/div>\r\n\r\n\n\n
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Once upon a time, activated carbon<\/h2>
Activated charcoal was already known and used in ancient Egypt, Greek Antiquity and by the Maya in Latin America for water filtration and medicine. It has been used throughout the ages, including during the First and Second World Wars, when it was incorporated into gas masks to protect soldiers from toxic gases.\r\n\r\nToday, technological innovations have made it possible to optimise the adsorption capacities of activated vegetable carbon to make it a high-performance filtration method<\/strong>, particularly in water and air filtration<\/strong>. <\/div>\r\n<\/div>\r\n\r\n\n\n
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How is activated carbon made?<\/h2>
Produced in powder, granule or fibre form, activated carbon follows a precise manufacturing method<\/strong>:\r\n\r\nCarbonization<\/strong>\r\n\r\nIn an oxygen-free environment, selected organic plant material (wood bark, bamboo, coconut shells, olive pits, etc.) is calcined at high temperatures. During this process, particles of carbonised material evaporate and create pores in the charcoal. The material has become porous<\/strong>.\r\n\r\nActivation<\/strong>\r\n\r\nActivation removes the tar still trapped in the pores of the material. This process increases the porosity of the activated carbon and thus increases its capacity to adsorb contaminants. Thanks to this step, the adsorption surface can be between 500 and 2500m\u00b2\/g<\/strong>! There are two methods for this: one physical and one chemical.\r\n