- \n
- Adsorption<\/b> is a process that chemically (or physically) binds a molecule (liquid form) to a surface that is solid. People can use this process to get rid of a chemical in a liquid such as water.<\/li>\n
- Activated carbon<\/b> is carbon that is made up of small, black beads or a solid black sponge. The carbon is treated with oxygen. This makes the carbon really easy to pass through (porous).<\/li>\n
- GAC<\/b> stands for \u201cGranular Activated Carbons.\u201d Specifically, it is a water treatment that uses adsorption onto activated carbon media.<\/li>\n
- AIX<\/b> stands for \u201cAnion Exchange Resin.\u201d First, an anion is a negatively charged ion (molecule or atom with a negative charge). Second, resin is made up of organic polymers (substance made from a certain process with repeating chemical structures). In AIX, negative ions are attracted to a resin that is positively charged.<\/li>\n
- Long-chain PFAS<\/b> have 6 or more Carbon-Fluorine (C-F) bonds.<\/li>\n
- Short-chain PFAS<\/b> have 7 or less C-F bonds for certain types called carboxylates, and 5 or less for other types called perfluoroalkyl sulfonates.<\/li>\n<\/ul>\n
How Can We Remove PFAS From Drinking Water With PFAS Treatments?<\/h2>\n
In short, conventional water treatment technologies don\u2019t fully remove or destroy PFAS. However, many new technologies can. The chart below gives a general overview of the comparisons. Scientists continue to test all these technologies for their effectiveness in removing short-chain PFAS. To be sure, the most effective treatment for a particular situation depends on many factors, such as local regulations, management of waste removed from water, and the water\u2019s chemistry itself.<\/p>\n
![\"PFAS](\"http:\/\/savethewater.org\/wp-content\/uploads\/2020\/02\/image1.png\")
<\/a>Chart made using Canva free template<\/figcaption><\/figure>\n What You Can Do<\/h2>\n
In addition, researchers continue to look at other technologies for treating PFAS, including electrocoagulation, which is a process that treats water by adding metal ions from sacrificial anodes (negative electrode where an electrical current enters a charged device) to remove pollutants. You can find out more about electrocoagulation, also known as electroflocculation, here<\/a>. Stay updated by following Save The WaterTM on Twitter!<\/p>\n
References<\/h2>\n
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- American Water Works Association. August 12, 2019. \u201cPer and Polyfluoroalkyl Substances (PFAS) Treatment.\u201d<\/li>\n
- Dora Chiang, Ph.D., PE and Ji Im, PE. March 2019. \u201cPFAS Cleanup Approaches – GAC vs. Anion Exchange Resin.\u201d<\/li>\n
- Cheryl Hogue. August 24, 2019. \u201cShort-chain and long-chain PFAS show similar toxicity, US National Toxicology Program says.\u201d c&en Chemical & Engineering News. https:\/\/cen.acs.org\/environment\/persistent-pollutants\/Short-chain-long-chain-PFAS\/97\/i33<\/li>\n
- Anne Marie Helmenstine, PhD. July 11, 2019. \u201cActivated Charcoal and How it Works.\u201d ThoughtCo. https:\/\/www.thoughtco.com\/how-does-activated-charcoal-work-604294<\/a><\/li>\n
- chemistNate. January 13, 2013. What’s the Anode, Cathode, and Salt Bridge? YouTube. https:\/\/www.youtube.com\/watch?v=a2v7ph3kLXo<\/a><\/li>\n
- Vivian Robinson. January 1999. Electroflocculation in the Treatment of Polluted Water. Reseachgate.net. https:\/\/www.researchgate.net\/publication\/265990355_Electroflocculation_in_the_Treatment_of_Polluted_Water<\/li>\n
- Y. Artoli. 2008. \u201cAdsorption.\u201d Encyclopedia of Ecology. https:\/\/www.sciencedirect.com\/topics\/earth-and-planetary-sciences\/adsorption<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
Merriam-Webster Dictionary. Polymer. https:\/\/www.merriam-webster.com\/dictionary\/polymer<\/p>\n
- \n
- SAMCO. November 28, 2017. \u201cWhat Is Ion Exchange Resin and How Does It Work?\u201d https:\/\/www.samcotech.com\/ion-exchange-resin-work-process\/<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
By April Day, Publishing Director for Save The Water\u2122 | February 16, 2020 What Do I Need…<\/p>\n","protected":false},"author":12812,"featured_media":115051,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[],"yst_prominent_words":[769,2033,2058,2046,2050,2062,2057,2045,1822,2051,2054,2052,2070,2056,1705,2063,2048,1993,612,792],"_links":{"self":[{"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/posts\/111097"}],"collection":[{"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/users\/12812"}],"replies":[{"embeddable":true,"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/comments?post=111097"}],"version-history":[{"count":2,"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/posts\/111097\/revisions"}],"predecessor-version":[{"id":115052,"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/posts\/111097\/revisions\/115052"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/media\/115051"}],"wp:attachment":[{"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/media?parent=111097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/categories?post=111097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/tags?post=111097"},{"taxonomy":"yst_prominent_words","embeddable":true,"href":"https:\/\/savethewater.org\/wp-json\/wp\/v2\/yst_prominent_words?post=111097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- chemistNate. January 13, 2013. What’s the Anode, Cathode, and Salt Bridge? YouTube. https:\/\/www.youtube.com\/watch?v=a2v7ph3kLXo<\/a><\/li>\n
- Activated carbon<\/b> is carbon that is made up of small, black beads or a solid black sponge. The carbon is treated with oxygen. This makes the carbon really easy to pass through (porous).<\/li>\n