**Transforming Chlorine Recovery: Repurposing Chlorine from Industrial Tail Gas Streams**<\/p>\n
Chlorine is essential in numerous industrial processes, particularly in Europe, where chloralkali electrolysis is crucial for generating about 8 million tonnes each year. Although effective recovery methods like low-temperature condensation exist, roughly 2-3% of chlorine still escapes as waste within tail gas streams. This not only leads to the loss of resources but also produces low-value by-products or causes inefficiencies in membrane-based recovery systems.<\/p>\n
A revolutionary advancement from German scientists presents an encouraging answer to this problem by utilizing a commercially available polystyrene-based ion exchange resin. This resin is treated with hydrochloric acid, converting it into a chloride form. This alteration enables it to selectively adsorb chlorine even from intricate gas mixtures common in chloralkali plant waste streams. The essence lies in the halogen bonding enabled by the resin\u2019s chloride ions, leading to unique trichloride species formation.<\/p>\n
The method is distinguished by its effectiveness and potential for effortless integration into current systems. Once the resin becomes saturated with chlorine, exposure to an 80\u00b0C environment for an hour can release 71% of the confined chlorine. This recovery cycle is ideal for industrial applications, particularly in systems that employ multiple columns in a swing-bed arrangement, as mentioned by Hongyuan Chuai from Hong Kong Polytechnic University.<\/p>\n
In addition to merely reclaiming chlorine, the research team demonstrated its capacity for repurposing the gas into valuable chemicals like 1,2-dichloroethane and phosgene. Gesa Dreyhsig from Freie Universit\u00e4t Berlin notes that halogenated bonds, such as those within trichlorides, display greater reactivity than that of pure chlorine gas.<\/p>\n
This innovation is recognized as a noteworthy proof-of-concept, with Chuai highlighting the process\u2019s dynamic implementation in flow configurations utilizing both 3D-printed and commercially standard components. Significantly, the utilization of a readily available material indicates that this technique could be quickly embraced throughout the industry. Nevertheless, Chuai emphasizes the importance of carefully controlling the system\u2019s thermal output to prevent heat-related hazards during the industrial scaling process.<\/p>\n
As the chemical industry increasingly focuses on sustainability and efficiency, such advancements signify a vital move towards reducing waste and optimizing resource use, potentially establishing a new benchmark for chlorine recovery and application on a global scale.<\/p>\n","protected":false},"excerpt":{"rendered":"
**Transforming Chlorine Recovery: Repurposing Chlorine from Industrial Tail Gas Streams** Chlorine is essential in numerous industrial processes, particularly in Europe, where chloralkali electrolysis is crucial for generating about 8 million tonnes each year. Although effective recovery methods like low-temperature condensation exist, roughly 2-3% of chlorine still escapes as waste within tail gas streams. This not […]<\/p>\n","protected":false},"author":2,"featured_media":375695,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[174],"class_list":["post-375694","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\/375694","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=375694"}],"version-history":[{"count":0,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/posts\/375694\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=\/wp\/v2\/media\/375695"}],"wp:attachment":[{"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=375694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=375694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wolfscientific.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=375694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}