Painted surfaces within the constructed environment may present a postponed environmental threat from hazardous per- and polyfluoroalkyl substances (PFAS) many years into the future, as indicated by a recent study. The researchers demonstrated that painted surfaces serve as a long-lasting reservoir, slowly discharging PFAS into the environment over their lifespan, which includes usage, renovation, demolition, and disposal, underscoring the necessity for a deeper understanding of this overlooked and delayed source of PFAS emissions to assist in informing policy, risk assessments, and mitigation strategies.<\/p>\n
PFAS, referred to as forever chemicals, are a category of highly stable fluorinated compounds utilized for their water- and stain-resistant characteristics in both industrial operations and consumer goods. However, due to their stability, they persist and bioaccumulate in the environment, with prolonged exposure connected to severe health issues.<\/p>\n
Prior research has predominantly concentrated on the direct emission of PFAS from products during manufacturing and initial usage. Yet, this does not consider emissions throughout their lifecycle, such as from paint within the built environment, which covers vast surface areas and endures for many years.<\/p>\n
Currently, Daqian Jiang at the University of Alabama, US, and colleagues have developed a model that quantifies PFAS retention and emissions related to architectural paints in the US, beginning in 2000 with forecasts extending to 2060. To construct the model, the team gathered and integrated diverse data, including PFAS measurements in both indoor and outdoor paint products, dynamics of building stock, patterns of paint consumption, emission kinetics, and the transport of waste to landfills.<\/p>\n
\u201cPaint is widely utilized and designed for long durability. This combination of extensive use and prolonged service life renders architectural paint an intriguing product category for comprehending PFAS movement through the built environment,\u201d Jiang states.<\/p>\n
The results indicated that in 2020, approximately 565 tonnes of PFAS were contained in in-use paint across the US, representing a PFAS reservoir that was 47 times the total annual emissions of these compounds from paint in the nation. By 2060, the model anticipated that around 486 tonnes of the retained PFAS would accumulate in landfill sites, emitting 25 times more PFAS into the environment compared to 2020, with hotspots driven by demolition activities and waste routing.<\/p>\n
\u201cWe anticipated that end-of-life accumulation would be significant, but we were surprised by how the end-of-life phase overshadowed the overall picture \u2013 it can emerge as a concern years or even decades after the product’s initial application,\u201d Jiang remarks.<\/p>\n
\u201cOne of the most remarkable findings is not just that paints contain PFAS, but that the vast majority of the PFAS mass is expected to remain stored within the buildings for many decades,\u201d states Patrick Byrne, who examines PFAS in the environment at Liverpool John Moores University, UK. \u201cThus, even if PFAS use in paints were decreased or eliminated today, considerable future emissions could still arise from the substantial quantities already present in existing structures.\u201d<\/p>\n
\u201cOnce we identify when and where PFAS releases are most likely to transpire, this type of analysis can assist in assessing mitigation strategies \u2013 for instance, modifications in product formulation, building renovation methods, waste management, or policy interventions,\u201d Jiang elaborates. Furthermore, he notes that this approach could be utilized for other consumer materials that likely exhibit the same mechanisms of PFAS accumulation through long-lasting products followed by delayed release, such as flooring, roofing, and insulation.<\/p>\n
\u201cFrom a broader environmental standpoint, the research emphasizes the necessity for improved identification of PFAS-containing materials prior to demolition so that their redistribution in the environment can be monitored and anticipated to aid in reducing future environmental releases,\u201d enhances Byrne.<\/p>\n","protected":false},"excerpt":{"rendered":"
Painted surfaces within the constructed environment may present a postponed environmental threat from hazardous per- and polyfluoroalkyl substances (PFAS) many years into the future, as indicated by a recent study. The researchers demonstrated that painted surfaces serve as a long-lasting reservoir, slowly discharging PFAS into the environment over their lifespan, which includes usage, renovation, demolition, […]<\/p>\n","protected":false},"author":2,"featured_media":373338,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[174],"class_list":["post-373337","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-source-chemistryworld-com"],"_links":{"self":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts\/373337","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=373337"}],"version-history":[{"count":0,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts\/373337\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/media\/373338"}],"wp:attachment":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=373337"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=373337"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=373337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}