{"id":8138,"date":"2023-04-17T18:59:41","date_gmt":"2023-04-17T22:59:41","guid":{"rendered":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/?p=8138"},"modified":"2023-04-18T22:56:03","modified_gmt":"2023-04-19T02:56:03","slug":"c47-evaluation-of-breakthrough-curves-perfluorooctanoic-acid-adsorption-on-activated-carbon","status":"publish","type":"post","link":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/c47-evaluation-of-breakthrough-curves-perfluorooctanoic-acid-adsorption-on-activated-carbon\/","title":{"rendered":"C47: Evaluation of Breakthrough Curves: Perfluorooctanoic Acid Adsorption on Activated Carbon"},"content":{"rendered":"\n

Perfluorooctanoic acid (PFOA), an organic pollutant linked with various cancers, is a “forever” chemical, as it has the ability to linger in the environment almost indefinitely without breaking down. As a result of the danger it poses, it is necessary to explore the effectiveness of various methods of removing PFOA from drinking water. The goal of the paper is to examine the effectiveness of activated carbon prepared from avocado stones as adsorbents to remove PFOA from water. Specifically, we investigated the rate of PFOA adsorption on activated carbon using dynamic column studies. The rate of adsorption of PFOA from water as a function of the mass of activated carbon in a sand bed was assessed. <\/p>\n\n\n\n

Sand beds were prepared using fine sand and varying masses of activated carbon, and PFOA solution (~100 ppm) was continuously passed through the sand beds. The effluent water was collected, and after every 25 cm3 of collection, the PFOA concentration was measured until the sand beds were fully contaminated. PFOA concentrations in the filtrate were measured indirectly using conductivity. A standard calibration curve for conductivity against PFOA concentration was used. <\/p>\n\n\n\n

The results of the experiment were plotted to obtain breakthrough curves, and the Yoon Nelson model was used to model the experimental data. From this model, the rate constant, kYN, and the time required for 50% adsorbate breakthrough, T, were determined for each experimental trial. The results showed a positive correlation between mass of activated carbon and T, and a negative correlation between mass of activated carbon and kYN. From these results, it was concluded that the sand bed took longer to get contaminated as the mass of activated carbon increased. These results hold importance since activated carbon can serve as a low-cost method of water purification compared to more expensive methods such as reverse osmosis.<\/p>\n\n\n\n

Author(s): Kevin Nettey, Mechanical Engineering Major <\/p>\n\n\n\n

Advisor(s): Catherine Almquist, Department of Chemical, Paper and Biomedical Engineering<\/p>\n\n\n\n

\"C47:<\/figure>\n","protected":false},"excerpt":{"rendered":"

Perfluorooctanoic acid (PFOA), an organic pollutant linked with various cancers, is a “forever” chemical, as it has the ability to linger in the environment almost indefinitely without breaking down. As a result of the danger it poses, it is necessary to explore the effectiveness of various methods of removing PFOA from drinking water. The goal […]<\/p>\n","protected":false},"author":301,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1300,1,1316,26],"tags":[896,1508,89],"class_list":["post-8138","post","type-post","status-publish","format-standard","hentry","category-2023-posters","category-projects","category-c41-50","category-chemical-paper-biomedical-engineering","tag-chemical-engineering","tag-pfoa","tag-stem"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pbRpLx-27g","jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/wp-json\/wp\/v2\/posts\/8138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/wp-json\/wp\/v2\/users\/301"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/wp-json\/wp\/v2\/comments?post=8138"}],"version-history":[{"count":0,"href":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/wp-json\/wp\/v2\/posts\/8138\/revisions"}],"wp:attachment":[{"href":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/wp-json\/wp\/v2\/media?parent=8138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/wp-json\/wp\/v2\/categories?post=8138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.miamioh.edu\/undergraduate-research-forum\/wp-json\/wp\/v2\/tags?post=8138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}