{"id":64072,"date":"2022-04-20T10:34:49","date_gmt":"2022-04-20T14:34:49","guid":{"rendered":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/?p=64072"},"modified":"2022-09-12T10:57:56","modified_gmt":"2022-09-12T14:57:56","slug":"feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream","status":"publish","type":"post","link":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/","title":{"rendered":"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Team<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Anjana Seshadri<\/li><li>Hailey Baker<\/li><li>Preston Hollopeter<\/li><li>Daphna Yaffe&nbsp;<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Mentors<\/h2>\n\n\n\n<p>Chris Wolfe and Professor Matthew Yates<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Abstract<\/h2>\n\n\n\n<p>A process developed by Xerox results in a waste stream of heptane and polydimethylsiloxane (PDMS), 7:1 by mass. Process scale up and complete separation of PDMS from heptane is desired. Previously, Team Nimbus (2021) had successfully designed a batch system to extract heptane from PDMS. As a comparison, a semi-continuous process was built and further investigated.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Introduction<\/h2>\n\n\n\n<p>The PDMS used by Xerox to create other desired polymer products has a viscosity like molasses (at 25\u00b0C). PDMS easily dissolves in nonpolar solvents, such as heptane, which greatly reduces its viscosity.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-163-1024x238.png\" alt=\"\" class=\"wp-image-101062\" width=\"412\" height=\"95\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-163-1024x238.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-163-300x70.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-163-768x179.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-163.png 1048w\" sizes=\"auto, (max-width: 412px) 100vw, 412px\" \/><figcaption><strong><em>Figure 1:&nbsp;<\/em><\/strong><em>PDMS and heptane structures<\/em> [1]<br><\/figcaption><\/figure>\n\n\n\n<p>Supercritical CO<sub>2<\/sub>&nbsp;extraction is commonly used to separate binary mixtures for high purity through solvation. The solvent capabilities of CO<sub>2<\/sub>&nbsp;depends on its density, which can be manipulated by pressure and temperature. Team Nimbus demonstrated that CO<sub>2<\/sub>&nbsp;can&nbsp;solvate&nbsp;heptane at&nbsp;<strong>1300 psi and 34 C<\/strong>, resulting in a purified polymer [1].&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-164.png\" alt=\"\" class=\"wp-image-101082\" width=\"316\" height=\"316\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-164.png 744w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-164-300x300.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-164-150x150.png 150w\" sizes=\"auto, (max-width: 316px) 100vw, 316px\" \/><figcaption><strong><em>Figure 2:&nbsp;<\/em><\/strong><em>Supercritical CO2 Properties [1]<\/em><\/figcaption><\/figure>\n\n\n\n<p>Purity of PDMS was measured by viscosity. Rheology is a highly precise method for viscosity measurements. The calibration curve for varying mass ratios of Heptane:PDMS is shown in Figure 3.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-165.png\" alt=\"\" class=\"wp-image-101102\" width=\"363\" height=\"281\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-165.png 840w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-165-300x233.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-165-768x596.png 768w\" sizes=\"auto, (max-width: 363px) 100vw, 363px\" \/><figcaption><strong><em>Figure 3:&nbsp;<\/em><\/strong><em>Viscosity Calibration Curve<\/em><br><\/figcaption><\/figure>\n\n\n\n<p>Last year, Team Nimbus created a batch system that successfully extracts heptane from PDMS and results in a polymer that is&nbsp;<strong>99.09%&nbsp;<\/strong>pure.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"401\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-166-1024x401.png\" alt=\"\" class=\"wp-image-101112\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-166-1024x401.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-166-300x118.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-166-768x301.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-166-1536x602.png 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-166-1200x470.png 1200w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-166.png 1582w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption><strong><em>Figure 4:&nbsp;<\/em><\/strong><em>Batch System P&amp;ID<\/em> [1]<\/figcaption><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Hypothesis&nbsp;<\/strong><\/h4>\n\n\n\n<p>A&nbsp;semi-continuous flow of CO<sub>2<\/sub>&nbsp;and an increased interfacial surface area between CO<sub>2<\/sub>&nbsp;and the sample will create a larger driving force for the mass transfer from the PDMS phase to the CO<sub>2<\/sub> phase than in the batch system.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Methods: Semi-continuous system<\/h2>\n\n\n\n<p>The semi-continuous system design was heavily influenced by the batch extractor, with modifications to allow for semi-continuous operation&nbsp;(Figures 5,6).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"297\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-169-1024x297.png\" alt=\"\" class=\"wp-image-101152\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-169-1024x297.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-169-300x87.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-169-768x223.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-169-1536x446.png 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-169-2048x594.png 2048w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-169-1200x348.png 1200w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-169-1980x574.png 1980w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption><strong><em>Figure 5:&nbsp;<\/em><\/strong><em>Semi-Continuous System P&amp;ID<\/em><br><\/figcaption><\/figure>\n\n\n\n<p><strong>System Overview:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Back&nbsp;pressure regulator and&nbsp;syringe pump to pressurize the system while allowing for good control over both pressure and flow rate of liquid CO<sub>2<\/sub><\/li><li>Temperature-controlled water bath to maintain the extraction vessel temperature<\/li><li>A 1:8 heptane:PDMS sample was loaded into the extraction vessel and flushed with supercritical CO<sub>2<\/sub><\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"630\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/labelled_diagram-1024x630.png\" alt=\"\" class=\"wp-image-101392\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/labelled_diagram-1024x630.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/labelled_diagram-300x185.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/labelled_diagram-768x472.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/labelled_diagram-1536x945.png 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/labelled_diagram-2048x1260.png 2048w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/labelled_diagram-1200x738.png 1200w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/labelled_diagram-1980x1218.png 1980w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption><strong><em>Figure 6:&nbsp;<\/em><\/strong><em>Semi-Continuous System<\/em><\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\"><li>A&nbsp;metal mesh&nbsp;was inserted into the entry fitting of the vessel to act as a sparger for the CO<sub>2&nbsp;<\/sub>(Figure 7)<\/li><li>The separation of heptane and CO<sub>2<\/sub> occurred in the condenser, where low temperatures decreased the solvent capabilities of CO<sub>2<\/sub><\/li><li>The purified PDMS was collected from the extraction vessel<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-11.jpeg\" alt=\"\" class=\"wp-image-101192\" width=\"171\" height=\"180\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-11.jpeg 578w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-11-286x300.jpeg 286w\" sizes=\"auto, (max-width: 171px) 100vw, 171px\" \/><figcaption><strong><em>Figure 7:&nbsp;<\/em><\/strong><em>Mesh Insert<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Methods: Batch System<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Team Nimbus&#8217; batch system was used to test the hypothesis that the soak time and flush rate impacted the resulting purity of the PDMS-heptane mixture&nbsp;<\/li><li>Conducted a Design&nbsp;Of Experiment (DOE) to analyze the effects of soak time and flush rate on purity<\/li><li>Trials also supported the hypothesis that PDMS and CO<sub>2<\/sub>&nbsp;were miscible under supercritical conditions (Figure 8)<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-12.jpeg\" alt=\"\" class=\"wp-image-101232\" width=\"289\" height=\"248\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-12.jpeg 914w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-12-300x258.jpeg 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-12-768x660.jpeg 768w\" sizes=\"auto, (max-width: 289px) 100vw, 289px\" \/><figcaption><strong><em>Figure 8:&nbsp;<\/em><\/strong><em>CO<sub>2<\/sub>&nbsp;bubbles in the PDMS Sample<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Results and Discussion<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Results for the DOEs performed on the semi-continuous and batch systems are shown in Tables 1 and 2, respectively.<\/li><\/ul>\n\n\n\n<p>Table 1. Semi-continuous system DOE results<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-173-1024x407.png\" alt=\"\" class=\"wp-image-101632\" width=\"556\" height=\"221\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-173-1024x407.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-173-300x119.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-173-768x305.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-173-1536x611.png 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-173-1200x477.png 1200w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-173-1980x787.png 1980w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-173.png 2022w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/><\/figure>\n\n\n\n<p>Table 2. Batch system DOE results<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-174-1024x440.png\" alt=\"\" class=\"wp-image-101642\" width=\"556\" height=\"239\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-174-1024x440.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-174-300x129.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-174-768x330.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-174-1536x659.png 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-174-1200x515.png 1200w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/image-174.png 1752w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\"><li>A semi-continuous setup with a mesh insert to increase the interfacial surface area between CO<sub>2<\/sub>&nbsp;and the sample did yield a greater mass transfer from the PDMS phase to the CO<sub>2<\/sub>&nbsp;phase per volume of CO<sub>2<\/sub>&nbsp;used.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusions and Future Work<\/h2>\n\n\n\n<p>The semi-continuous system <strong>successfully extracted<\/strong> heptane from the 1:8&nbsp;Heptane:PDMS&nbsp;mixture and yielded a higher purity product than the batch system per volume of CO<sub>2<\/sub>&nbsp;used. The addition of a mesh to the vessel likely increased the extraction of heptane. Due to low yield and poor pressure control, however, the current semi-continuous system is not viable for scale up until these factors have been addressed.&nbsp;<\/p>\n\n\n\n<p>Possibilities for <strong>future work<\/strong> include:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Further investigation of the semi-continuous system to find optimal extraction conditions<\/li><li>Investigation of other parameters&nbsp;(temperature, vessel diameter and length)<\/li><li>Exploring a wider range of operating pressures and flow rates<\/li><li>Incorporating a static mixer into the vessel<\/li><li>Investigate&nbsp;ways to increase the lifetime of the system, reduce loss of sample, and prevent clogging of the valves and pipes with PDMS<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Acknowledgements<\/h2>\n\n\n\n<p>The team would like to thank our sponsor, Chris Wolfe from Xerox, our faculty advisor, Professor Yates, and Professor Lawton, Professor Kelley, Professor Juba, Clair Cunningham, Mason Garlatti, Jeffrey Lefler, Quinton Dang, and Mark Volkin for their support, encouragement, and assistance with this project. We would also like to thank Team Nimbus (2021) for their careful documentation of their work on this project last year.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">References<\/h2>\n\n\n\n<p>1. Team Nimbus, 2021, University of Rochester Department of Chemical Engineering<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A process developed by Xerox results in a waste stream of heptane and polydimethylsiloxane (PDMS). The team built and tested a semi-continuous extraction system to separate heptane and PDMS.<\/p>\n","protected":false},"author":6242,"featured_media":101792,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[76],"tags":[],"coauthors":[8612],"class_list":["post-64072","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-che-archive"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream - Senior Design Day<\/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:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream - Senior Design Day\" \/>\n<meta property=\"og:description\" content=\"A process developed by Xerox results in a waste stream of heptane and polydimethylsiloxane (PDMS). The team built and tested a semi-continuous extraction system to separate heptane and PDMS.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/\" \/>\n<meta property=\"og:site_name\" content=\"Senior Design Day\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-20T14:34:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-09-12T14:57:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Picture1-10.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"841\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#\\\/schema\\\/person\\\/351018fbcf84ed8cac6d8072ba5b347c\"},\"headline\":\"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream\",\"datePublished\":\"2022-04-20T14:34:49+00:00\",\"dateModified\":\"2022-09-12T14:57:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/\"},\"wordCount\":798,\"image\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/wp-content\\\/uploads\\\/2022\\\/04\\\/Picture1-10.jpg\",\"articleSection\":[\"CHE Archive\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/\",\"url\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/\",\"name\":\"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream - Senior Design Day\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/wp-content\\\/uploads\\\/2022\\\/04\\\/Picture1-10.jpg\",\"datePublished\":\"2022-04-20T14:34:49+00:00\",\"dateModified\":\"2022-09-12T14:57:56+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#\\\/schema\\\/person\\\/351018fbcf84ed8cac6d8072ba5b347c\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/wp-content\\\/uploads\\\/2022\\\/04\\\/Picture1-10.jpg\",\"contentUrl\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/wp-content\\\/uploads\\\/2022\\\/04\\\/Picture1-10.jpg\",\"width\":1220,\"height\":914},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#website\",\"url\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/\",\"name\":\"Senior Design Day\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#\\\/schema\\\/person\\\/351018fbcf84ed8cac6d8072ba5b347c\",\"name\":\"admin\",\"url\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/author\\\/seniordesign\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream - Senior Design Day","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/","og_locale":"en_US","og_type":"article","og_title":"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream - Senior Design Day","og_description":"A process developed by Xerox results in a waste stream of heptane and polydimethylsiloxane (PDMS). The team built and tested a semi-continuous extraction system to separate heptane and PDMS.","og_url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/","og_site_name":"Senior Design Day","article_published_time":"2022-04-20T14:34:49+00:00","article_modified_time":"2022-09-12T14:57:56+00:00","og_image":[{"url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Picture1-10.jpg","width":841,"height":630,"type":"image\/jpeg"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/#article","isPartOf":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/"},"author":{"name":"admin","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#\/schema\/person\/351018fbcf84ed8cac6d8072ba5b347c"},"headline":"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream","datePublished":"2022-04-20T14:34:49+00:00","dateModified":"2022-09-12T14:57:56+00:00","mainEntityOfPage":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/"},"wordCount":798,"image":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/#primaryimage"},"thumbnailUrl":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Picture1-10.jpg","articleSection":["CHE Archive"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/","url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/","name":"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream - Senior Design Day","isPartOf":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/#primaryimage"},"image":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/#primaryimage"},"thumbnailUrl":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Picture1-10.jpg","datePublished":"2022-04-20T14:34:49+00:00","dateModified":"2022-09-12T14:57:56+00:00","author":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#\/schema\/person\/351018fbcf84ed8cac6d8072ba5b347c"},"breadcrumb":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/#primaryimage","url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Picture1-10.jpg","contentUrl":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2022\/04\/Picture1-10.jpg","width":1220,"height":914},{"@type":"BreadcrumbList","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/feasibility-analysis-of-a-semi-continuous-supercritical-co2-extraction-of-heptane-from-pdms-waste-stream\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/"},{"@type":"ListItem","position":2,"name":"Feasibility Analysis of a Semi-Continuous Supercritical CO2 Extraction of Heptane from PDMS Waste Stream"}]},{"@type":"WebSite","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#website","url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/","name":"Senior Design Day","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#\/schema\/person\/351018fbcf84ed8cac6d8072ba5b347c","name":"admin","url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/author\/seniordesign\/"}]}},"_links":{"self":[{"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/posts\/64072","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/users\/6242"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/comments?post=64072"}],"version-history":[{"count":22,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/posts\/64072\/revisions"}],"predecessor-version":[{"id":102422,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/posts\/64072\/revisions\/102422"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/media\/101792"}],"wp:attachment":[{"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/media?parent=64072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/categories?post=64072"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/tags?post=64072"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/coauthors?post=64072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}