{"id":1679,"date":"2011-11-10T10:27:20","date_gmt":"2011-11-10T10:27:20","guid":{"rendered":"http:\/\/www.joswassink.nl\/insight\/?p=1679"},"modified":"2011-11-10T10:27:20","modified_gmt":"2011-11-10T10:27:20","slug":"dow-awards-separation-by-freezing","status":"publish","type":"post","link":"https:\/\/www.joswassink.nl\/insight\/?p=1679","title":{"rendered":"DOW awards separation by freezing"},"content":{"rendered":"<p><strong><\/p>\n<div id=\"attachment_1680\" style=\"width: 310px\" class=\"wp-caption alignright\"><a rel=\"attachment wp-att-1680\" href=\"http:\/\/www.joswassink.nl\/insight\/?attachment_id=1680\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1680\" class=\"size-thumbnail wp-image-1680\" title=\"scwitkamp_548x365\" src=\"http:\/\/www.joswassink.nl\/insight\/wp-content\/uploads\/2011\/11\/scwitkamp_548x365-300x199.jpg\" alt=\"\" width=\"300\" height=\"199\" \/><\/a><p id=\"caption-attachment-1680\" class=\"wp-caption-text\">Prof. Witkamp has been awarded the prize for having set in motion the first steps towards a new industrial ecology - Photo: Tomas van Dijk<\/p><\/div>\n<p>Professor Geert-Jan Witkamp will receive the DOW Energy Prize on   Thursday. His separation technology based on freezing uses only 15   percent of the energy needed for evaporation.<\/strong><\/p>\n<p>About a quarter of all the world\u2019s energy is used for industrial   separation processes, Professor Geert-Jan Witkamp (3mE) estimates. Back   in 1995, when the professor came across the accidental effect of salt   being separated from a freezing solution, he decided to use the   phenomenon as the foundation for a new separation process called   \u2018eutectic freezing crystallisation\u2019, or EFC for short. Prof. Witkamp   discovered that when lowering the temperature of ice slurry, one   encounters the crystallisation point (eutectic point) of the salt   solution. The salt, which typically sinks to the bottom of the   crystallisator, may then be retrieved in pure crystals, while pure water   ice drifts on top of it. Although many in the industry regarded   freezing as a cumbersome and expensive technology, Prof. Witkamp   demonstrated his technology at various sites using a mobile installation   on the back of a truck. He showed the energy used for purification   could be reduced by some 90 percent.<!--more--><\/p>\n<p>Fifteen years on, EFC has been demonstrated in mining, the chemical   industry, and in manure treatment. Larger installations are now under   design. EFC separation, a TU-owned company, tests the technology for   Shell, Umicore, BASF and others. \u201cAll over the world, Witkamp\u2019s ideas   are gaining influence,\u201d said jury chairman, Professor Wim Van Swaaij.<\/p>\n<p>The  jury of the DOW Energy Prize also noted that the development of   eutectic freezing crystallisation has proved to be a fertile ground for   MSc and PhD students: two PhD students graduated with honours, another   was awarded the DOW thesis award, and yet another was honored as the   best TU Delft graduate. Van Swaaij: \u201cQuality breeds quality.\u201d<\/p>\n<p>Meanwhile,  Prof. Witkamp is developing other innovations in process  technology. He  believes that by combining reverse osmosis to  concentrate process  streams, with eutectic freezing for separation, a  foundation can be laid  for creating industrial processes that produce  no waste. In Prof.  Witkamp\u2019s vision, we will derive our energy from  sunlight, harvest  organic raw materials from biological processes, and  recycle the  inorganic materials.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Professor Geert-Jan Witkamp will receive the DOW Energy Prize on Thursday. His separation technology based on freezing uses only 15 percent of the energy needed for evaporation. About a quarter of all the world\u2019s energy is used for industrial separation processes, Professor Geert-Jan Witkamp (3mE) estimates. Back in 1995, when the professor came across the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,6],"tags":[133,146,156,183,382,471],"class_list":["post-1679","post","type-post","status-publish","format-standard","hentry","category-articles","category-delta","tag-dow","tag-efc","tag-energy","tag-freezing","tag-separation","tag-witkamp"],"_links":{"self":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/posts\/1679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1679"}],"version-history":[{"count":0,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=\/wp\/v2\/posts\/1679\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.joswassink.nl\/insight\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}