{"id":18688,"date":"2024-12-06T14:09:51","date_gmt":"2024-12-06T19:09:51","guid":{"rendered":"https:\/\/cwn-rce.ca\/?p=18688"},"modified":"2025-09-18T18:50:57","modified_gmt":"2025-09-18T22:50:57","slug":"mise-a-jour-de-la-recherche-internationale-sur-les-pfas","status":"publish","type":"post","link":"https:\/\/cwn-rce.ca\/fr\/2024\/12\/06\/mise-a-jour-de-la-recherche-internationale-sur-les-pfas\/","title":{"rendered":"Mise \u00e0 jour de la recherche internationale sur les PFAS"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1144px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p style=\"font-weight: 400;\">Les PFAS sont pr\u00e9occupants en raison de leur persistance, de leur mobilit\u00e9 et de leur toxicit\u00e9 en cas d&#8217;exposition g\u00e9n\u00e9ralis\u00e9e. L&#8217;exposition \u00e0 des concentrations \u00e9lev\u00e9es a \u00e9t\u00e9 li\u00e9e au cancer. Il existe \u00e9galement des preuves des effets de l&#8217;exposition in utero, pendant l&#8217;enfance et la petite enfance, notamment l&#8217;immunosuppression et la diminution de l&#8217;efficacit\u00e9 des vaccins, ainsi qu&#8217;un risque accru d&#8217;infections, d&#8217;allergies, d&#8217;asthme et de d\u00e9ficit de l&#8217;attention.<\/p>\n<p style=\"font-weight: 400;\">Lors d&#8217;un r\u00e9cent atelier organis\u00e9 par la Water Research Foundation (WRF) et la Global Water Research Coalition (GWRC), d&#8217;importants r\u00e9sultats de recherche concernant le transport, le traitement et le devenir des PFAS ont \u00e9t\u00e9 communiqu\u00e9s aux services de distribution d&#8217;eau.<\/p>\n<h2>Identification des sources<\/h2>\n<p style=\"font-weight: 400;\">La surveillance requise confirme les pr\u00e9visions selon lesquelles les PFAS sont largement r\u00e9pandus dans les eaux de surface aux \u00c9tats-Unis. La bonne nouvelle est que les concentrations de PFOS et de PFOA dans les eaux us\u00e9es ont diminu\u00e9 depuis 2000, lorsque 3M a volontairement commenc\u00e9 \u00e0 \u00e9liminer progressivement les PFAS \u00e0 longue cha\u00eene. Toutefois, les PFAS \u00e0 cha\u00eene courte sont en augmentation et sont plus mobiles que leurs homologues \u00e0 cha\u00eene longue, ce qui suscite des inqui\u00e9tudes quant \u00e0 l&#8217;\u00e9pandage de biosolides sur les terres agricoles.<br \/>\nDes recherches men\u00e9es aux \u00c9tats-Unis ont confirm\u00e9 que les sources les plus concentr\u00e9es de PFAS dans les eaux us\u00e9es provenaient de la formation au feu, du placage de m\u00e9taux, des a\u00e9roports, des lixiviats de d\u00e9charge et de la fabrication de textiles. Une d\u00e9couverte plus surprenante est que les\u00a0<em>eaux us\u00e9es domestiques<\/em>\u00a0sont celles qui contribuent le plus en termes de masse aux eaux us\u00e9es. La surveillance de la rivi\u00e8re Trinity au Texas a montr\u00e9 que 90 % des PFAS entrant dans la deuxi\u00e8me usine provenaient de sources domestiques, ce qui souligne la n\u00e9cessit\u00e9 d&#8217;\u00e9liminer les PFAS des produits de nettoyage m\u00e9nagers, des ustensiles de cuisine antiadh\u00e9sifs, des cosm\u00e9tiques, des produits de soins personnels et des emballages alimentaires.<\/p>\n<h2>Efficacit\u00e9 et co\u00fbt du traitement<\/h2>\n<p style=\"font-weight: 400;\">La recherche sur les m\u00e9thodes de traitement efficaces s&#8217;est concentr\u00e9e sur les membranes, les r\u00e9sines \u00e9changeuses d&#8217;ions (IEX), les r\u00e9sines (IEX), le charbon actif en grains (CAG) et le charbon actif en poudre (CAP). Toutes ces approches ont permis d&#8217;\u00e9liminer efficacement les PFAS, mais chaque option pr\u00e9sente des co\u00fbts op\u00e9rationnels et d&#8217;investissement diff\u00e9rents :<\/p>\n<ul>\n<li>Les membranes d&#8217;osmose inverse \u00e0 basse pression ont \u00e9t\u00e9 les plus efficaces (90 %), mais elles n\u00e9cessitent une gestion des co\u00fbts et des approches environnementales.<\/li>\n<li>Les membranes d&#8217;osmose inverse \u00e0 basse pression se sont r\u00e9v\u00e9l\u00e9es les plus efficaces (90 %), mais leur gestion n\u00e9cessite des co\u00fbts et des approches environnementales.<br \/>\n&#8211; L&#8217;Universit\u00e9 de Toronto a \u00e9valu\u00e9 le CAG dans deux stations d&#8217;\u00e9puration de l&#8217;Ontario. Leurs recherches ont montr\u00e9 que pour une installation de 50 MGD, l&#8217;\u00e9limination des PFAS co\u00fbterait 16 millions de dollars par an.<\/li>\n<li>Un projet a montr\u00e9 que la capture des a\u00e9rosols pendant l&#8217;a\u00e9ration est prometteuse pour l&#8217;\u00e9limination des PFOA \u00e0 longue cha\u00eene, \u00e9tant donn\u00e9 que les PFAS s&#8217;accumulent \u00e0 une concentration 3X plus \u00e9lev\u00e9e dans la mousse pendant l&#8217;a\u00e9ration que dans les eaux us\u00e9es.<\/li>\n<li>L&#8217;IEX a \u00e9galement \u00e9t\u00e9 consid\u00e9r\u00e9 comme une solution technique viable.<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">Une fois les PFAS captur\u00e9s, la question de leur destruction reste un probl\u00e8me majeur. Les m\u00e9thodes de destruction existantes, comme l&#8217;incin\u00e9ration, n&#8217;ont pas \u00e9t\u00e9 tr\u00e8s efficaces jusqu&#8217;\u00e0 pr\u00e9sent, en raison de leur co\u00fbt prohibitif et des pr\u00e9occupations li\u00e9es \u00e0 la contamination locale.<\/p>\n<p style=\"font-weight: 400;\">Pour plus d&#8217;informations :<\/p>\n<ul>\n<li>Fondation pour la recherche sur l&#8217;eau :\u00a0<a href=\"https:\/\/www.waterrf.org\/serve-file\/4949-PFAS.pdf\" target=\"_blank\" rel=\"noopener\">Per- and Polyfluoroalkyl Substances<\/a>\u00a0and\u00a0<a href=\"https:\/\/www.waterrf.org\/research\/projects\/investigation-alternative-management-strategies-prevent-pfas-entering-drinking\" target=\"_blank\" rel=\"noopener\">Investigation of Alternative Management Strategies to Prevent PFAS from Entering Drinking Water Supplies and Wastewater (en<\/a>\u00a0anglais\u00a0<a href=\"https:\/\/www.waterrf.org\/research\/projects\/investigation-alternative-management-strategies-prevent-pfas-entering-drinking\">)<\/a><\/li>\n<li>Note d&#8217;information du Bureau europ\u00e9en de l&#8217;environnement :<a href=\"https:\/\/eeb.org\/wp-content\/uploads\/2023\/10\/PFAS-in-drinking-water-briefing-final-1.pdf\" target=\"_blank\" rel=\"noopener\">PFAS-in-drinking-water-briefing (en anglais)<\/a><\/li>\n<li>Institut national n\u00e9erlandais pour la sant\u00e9 publique et l&#8217;environnement :<a href=\"https:\/\/www.rivm.nl\/en\/pfas\/current-information\">Informations actuelles sur les PFAS | RIVM<\/a><\/li>\n<li>KWR :<a href=\"https:\/\/www.kwrwater.nl\/en\/actueel\/pfas-an-ongoing-focus-in-the-water-sector\/\" target=\"_blank\" rel=\"noopener\">PFAS : an ongoing focus in the water sector (en<\/a>\u00a0anglais)<\/li>\n<li>Webinaire du RCE\/GWRC du 14 novembre 2024 :<a href=\"https:\/\/cwn-rce.ca\/fr\/evenements\/webinaires\/cwn-webinars\/\">Quelles strat\u00e9gies les services publics peuvent-ils utiliser pour communiquer sur les risques associ\u00e9s aux PFAS ?<\/a><\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Lors d&#8217;un r\u00e9cent atelier organis\u00e9 par la Water Research Foundation (WRF) et la Global Water Research Coalition (GWRC), d&#8217;importants r\u00e9sultats de recherche concernant le transport, le traitement et le devenir des SPFA ont \u00e9t\u00e9 pr\u00e9sent\u00e9s aux services publics d&#8217;eau.<\/p>\n","protected":false},"author":18,"featured_media":17887,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[861],"tags":[953],"class_list":["post-18688","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles-dinfo-source","tag-info-source-de-lhiver-2024"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mise \u00e0 jour de la recherche internationale sur les PFAS &#8211; 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