{"id":28669,"date":"2020-09-02T14:49:08","date_gmt":"2020-09-02T12:49:08","guid":{"rendered":"https:\/\/oneearth-oneocean.com\/2020\/09\/02\/desorption-modeling-of-hydrophobic-organic-chemicals-from-plastic-sheets-using-experimentally-determined-diffusion-coefficients-in-plastics\/"},"modified":"2023-07-05T08:00:26","modified_gmt":"2023-07-05T06:00:26","slug":"desorption-modeling-of-hydrophobic-organic-chemicals-from-plastic-sheets-using-experimentally-determined-diffusion-coefficients-in-plastics","status":"publish","type":"post","link":"https:\/\/oneearth-oneocean.com\/en\/international-marine-litter-database-en-2\/2020\/desorption-modeling-of-hydrophobic-organic-chemicals-from-plastic-sheets-using-experimentally-determined-diffusion-coefficients-in-plastics\/","title":{"rendered":"Desorption modeling of hydrophobic organic chemicals from plastic sheets  using experimentally determined diffusion coefficients in plastics"},"content":{"rendered":"<p>Hwang Lee, Da-Eun Byun, Ju Min Kim, Jung-Hwan Kwon,<\/p>\n<p>Marine Pollution Bulletin, Volume 126, 2018, Pages 312-317, ISSN 0025-326X,<\/p>\n<p>Abstract:<\/p>\n<p>To evaluate rate of migration from plastic debris, desorption of model hydrophobic organic chemicals (HOCs) from polyethylene<br \/>\n(PE)\/polypropylene (PP) films to water was measured using PE\/PP films homogeneously loaded with the HOCs. The HOCs fractions remaining in the PE\/PP films were compared with those predicted using a model characterized by the mass transfer Biot number. The experimental data agreed with the model simulation, indicating that HOCs desorption from plastic particles can generally be described by the model.<br \/>\nFor hexachlorocyclohexanes with lower plastic-water partition coefficients, desorption was dominated by diffusion in the plastic film, whereas desorption of chlorinated benzenes with higher partition coefficients was determined by diffusion in the aqueous boundary layer.<\/p>\n<p>Evaluation of the fraction of HOCs remaining in plastic films with respect to film thickness and desorption time showed that the partition coefficient between plastic and water is the most important parameter influencing the desorption half-life.<\/p>\n<p>https:\/\/doi.org\/10.1016\/j.marpolbul.2017.11.032.(http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0025326X1730989X)<\/p>\n<p><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0025326X1730989X\/pdfft?md5=f5ebb209e983577bbc4953f1a01c24cc&amp;pid=1-s2.0-S0025326X1730989X-main.pdf\">https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0025326X1730989X\/pdfft?md5=f5ebb209e983577bbc4953f1a01c24cc&amp;pid=1-s2.0-S0025326X1730989X-main.pdf<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hwang Lee, Da-Eun Byun, Ju Min Kim, Jung-Hwan Kwon, Marine Pollution Bulletin, Volume 126, 2018, Pages 312-317, ISSN 0025-326X, Abstract: To evaluate rate of migration from plastic debris, desorption of model hydrophobic organic chemicals (HOCs) from polyethylene (PE)\/polypropylene (PP) films to water was measured using PE\/PP films homogeneously loaded with the HOCs. The HOCs fractions remaining in the PE\/PP films were compared with those predicted using a model characterized by the mass transfer Biot number. The experimental data agreed with the model simulation, indicating that HOCs desorption from plastic particles can generally be described by the model. For hexachlorocyclohexanes with lower plastic-water partition coefficients, desorption was dominated by diffusion in the plastic film, whereas desorption of chlorinated benzenes with higher partition coefficients was determined by diffusion in the aqueous boundary layer. Evaluation of the fraction of HOCs remaining in plastic films with respect to film thickness and desorption time showed that the partition coefficient between plastic and water is the most important parameter influencing the desorption half-life. https:\/\/doi.org\/10.1016\/j.marpolbul.2017.11.032.(http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0025326X1730989X) https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0025326X1730989X\/pdfft?md5=f5ebb209e983577bbc4953f1a01c24cc&amp;pid=1-s2.0-S0025326X1730989X-main.pdf<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2221],"tags":[3008,3009,3010,3011,2290,3012],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Desorption modeling of hydrophobic organic chemicals from plastic sheets using experimentally determined diffusion coefficients in plastics - One Earth - One Ocean e. V.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/oneearth-oneocean.com\/en\/international-marine-litter-database-en-2\/2020\/desorption-modeling-of-hydrophobic-organic-chemicals-from-plastic-sheets-using-experimentally-determined-diffusion-coefficients-in-plastics\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Desorption modeling of hydrophobic organic chemicals from plastic sheets using experimentally determined diffusion coefficients in plastics - One Earth - One Ocean e. V.\" \/>\n<meta property=\"og:description\" content=\"Hwang Lee, Da-Eun Byun, Ju Min Kim, Jung-Hwan Kwon, Marine Pollution Bulletin, Volume 126, 2018, Pages 312-317, ISSN 0025-326X, Abstract: To evaluate rate of migration from plastic debris, desorption of model hydrophobic organic chemicals (HOCs) from polyethylene (PE)\/polypropylene (PP) films to water was measured using PE\/PP films homogeneously loaded with the HOCs. The HOCs fractions remaining in the PE\/PP films were compared with those predicted using a model characterized by the mass transfer Biot number. The experimental data agreed with the model simulation, indicating that HOCs desorption from plastic particles can generally be described by the model. For hexachlorocyclohexanes with lower plastic-water partition coefficients, desorption was dominated by diffusion in the plastic film, whereas desorption of chlorinated benzenes with higher partition coefficients was determined by diffusion in the aqueous boundary layer. Evaluation of the fraction of HOCs remaining in plastic films with respect to film thickness and desorption time showed that the partition coefficient between plastic and water is the most important parameter influencing the desorption half-life. https:\/\/doi.org\/10.1016\/j.marpolbul.2017.11.032.(http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0025326X1730989X) https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0025326X1730989X\/pdfft?md5=f5ebb209e983577bbc4953f1a01c24cc&amp;pid=1-s2.0-S0025326X1730989X-main.pdf\" \/>\n<meta property=\"og:url\" content=\"https:\/\/oneearth-oneocean.com\/en\/international-marine-litter-database-en-2\/2020\/desorption-modeling-of-hydrophobic-organic-chemicals-from-plastic-sheets-using-experimentally-determined-diffusion-coefficients-in-plastics\/\" \/>\n<meta property=\"og:site_name\" content=\"One Earth - One Ocean e. 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