{"id":4603,"date":"2026-01-29T16:53:34","date_gmt":"2026-01-29T15:53:34","guid":{"rendered":"https:\/\/gws-industries.com\/?p=4603"},"modified":"2026-01-29T18:41:41","modified_gmt":"2026-01-29T17:41:41","slug":"charbon-actif-eau-filtre","status":"publish","type":"post","link":"https:\/\/gws-industries.com\/fr\/2026\/01\/29\/charbon-actif-eau-filtre\/","title":{"rendered":"Pourquoi le charbon est-il dit \u00ab actif \u00bb ? Tout le monde ne sait pas que.."},"content":{"rendered":"\n
Le charbon actif est un mat\u00e9riau poreux dot\u00e9 de propri\u00e9t\u00e9s adsorbantes.<\/p>\n\n\n\n
L’adsorption (\u00e0 ne pas confondre avec l’absorption) est un ph\u00e9nom\u00e8ne par lequel une surface attire et capture des mol\u00e9cules qui adh\u00e8rent \u00e0 cette surface par une liaison chimique. Plus la surface de contact est grande, plus l’efficacit\u00e9 d’adsorption est \u00e9lev\u00e9e \u00e0 masse \u00e9gale. L’absorption, en revanche, implique que la mati\u00e8re absorb\u00e9e se diffuse \u00e0 l’int\u00e9rieur de la masse absorbante. La capacit\u00e9 d’adsorption du charbon actif d\u00e9pend donc de la taille et de la surface interne de la myriade de canaux, pores et poches o\u00f9 les substances gazeuses ou dissoutes pr\u00e9sentes dans l’eau forment des liaisons physiques et y adh\u00e8rent.<\/p>\n\n\n\n
Pourquoi parle-t-on de charbon actif ?<\/h3>\n\n\n\n
Pour augmenter la surface poreuse, le charbon est activ\u00e9 afin d’atteindre une surface d’adsorption comprise entre 500 et 2500 m\u00e8tres carr\u00e9s par gramme<\/p>\n\n\n\n
L’activation s’effectue par choc thermique avec un flux d’air ou avec des agents chimiques qui sont ensuite rinc\u00e9s. Cette derni\u00e8re technique d’activation est celle qui g\u00e9n\u00e8re des charbons avec une porosit\u00e9 plus \u00e9lev\u00e9e.<\/p>\n\n\n\n
Certains filtres \u00e0 charbon actif d’origine v\u00e9g\u00e9tale portent la mention \u00ab lav\u00e9 \u00e0 l’acide \u00bb (acid wash). Il s’agit d’un traitement suppl\u00e9mentaire visant \u00e0 \u00e9liminer les cendres de combustion et les mati\u00e8res organiques \u00e9ventuellement pr\u00e9sentes.<\/p>\n\n\n\n
Que retient le charbon actif ?<\/h3>\n\n\n\n
Les filtres \u00e0 eau sont principalement compos\u00e9s de charbon actif sous diff\u00e9rentes formes, granulaire, en poudre ou solide (Carbon Block) : leur surface poreuse est capable de capturer les diff\u00e9rents compos\u00e9s organiques polluants pr\u00e9sents. En particulier, le charbon actif adsorbe le chlore utilis\u00e9 pour la d\u00e9sinfection, neutralise \u00e9galement les mauvaises odeurs et am\u00e9liore le go\u00fbt de l’eau.<\/p>\n\n\n\n
Il existe bien s\u00fbr diff\u00e9rents types de charbon, avec des capacit\u00e9s et une efficacit\u00e9 variables, qui agissent sur les pesticides, les PFAS et les compos\u00e9s organiques et halog\u00e9n\u00e9s contenant des m\u00e9taux lourds tels que le plomb.<\/p>\n\n\n\n
\n
\n<\/figure>\n<\/div>\n<\/div>\n\n\n\n
La litt\u00e9rature scientifique ne suffit pas pour vanter l’efficacit\u00e9 d’un filtre \u00e0 charbon actif, il faut un test qui d\u00e9montre sa capacit\u00e9 de filtration r\u00e9elle.<\/h3>\n\n\n\n
Les filtres Waterpro \u00e9liminent le chlore et r\u00e9duisent les PFAS-PFOA, comment pouvons-nous l’affirmer ? C’est simple, nous avons charg\u00e9 le TUV de tester les performances de nos filtres pendant la dur\u00e9e indiqu\u00e9e sur la plaque signal\u00e9tique. Volume total en litres et d\u00e9bit en litres par minute (le temps de contact est important)<\/p>\n\n\n\n
Pour le chlore, aucun probl\u00e8me : l’\u00e9limination totale est assur\u00e9e bien au-del\u00e0 des donn\u00e9es indiqu\u00e9es, tandis que pour les PFAS et les PFOA, nous avons une courbe qui part de valeurs \u00e9lev\u00e9es sup\u00e9rieures \u00e0 90 % et se stabilise autour de 50 % en fin de vie. Nous pouvons donc indiquer sur nos \u00e9tiquettes que nos filtres \u00e9liminent le chlore libre et r\u00e9duisent consid\u00e9rablement les PFAS et les PFOA, ainsi que le plomb et d’autres m\u00e9taux.<\/p>\n\n\n\n
Comment agit l’argent ionique dans le charbon actif ?<\/h3>\n\n\n\n
Du nitrate d’argent, qui a un pouvoir bact\u00e9riostatique, peut \u00eatre ajout\u00e9 au charbon actif : l’argent est en effet un agent naturel qui inhibe la prolif\u00e9ration bact\u00e9rienne \u00e0 l’int\u00e9rieur du filtre lui-m\u00eame, emp\u00eachant ainsi la formation d’algues et de moisissures. Lorsque le charbon est compact\u00e9 dans une structure tr\u00e8s dense, il oblige chaque mol\u00e9cule d’eau \u00e0 passer \u00e0 travers ses pores microscopiques. L’argent combat les microbes de trois mani\u00e8res :<\/p>\n\n\n\n
\n
en interrompant le m\u00e9tabolisme cellulaire,<\/li>\n\n\n\n
en inhibant les processus de transport dans la membrane<\/li>\n\n\n\n
en emp\u00eachant la multiplication des cellules.<\/li>\n<\/ul>\n\n\n\n
Ce m\u00e9canisme d’action de l’argent r\u00e9duit consid\u00e9rablement le risque de formation de biofilm en aval du filtre et jusqu’\u00e0 la buse de distribution.<\/p>\n","protected":false},"excerpt":{"rendered":"
Le charbon actif est un mat\u00e9riau poreux dot\u00e9 de propri\u00e9t\u00e9s adsorbantes. L’adsorption (\u00e0 ne pas confondre avec l’absorption) est un ph\u00e9nom\u00e8ne par lequel une surface attire et capture des mol\u00e9cules qui adh\u00e8rent \u00e0 cette surface par une liaison chimique. Plus la surface de contact est grande, plus l’efficacit\u00e9 d’adsorption est \u00e9lev\u00e9e \u00e0 masse \u00e9gale.L’absorption, en […]<\/p>\n","protected":false},"author":1,"featured_media":4608,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-4603","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-fr"],"yoast_head":"\n
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