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Forward osmosis (FO) is a promising technology for efficient water reclamation at low operating costs. It has shown potential in producing fresh water from seawater; however, the regeneration of the diluted draw solution (DS) still holds back further development. Thermo-responsive polymers, especially polyalkylene glycol (PAG) based copolymers with hydrophilic ethylene oxide and hydrophobic propylene oxide units, have shown suitability as DSs in FO using low-temperature waste heat to regenerate the DS. In this study, we explored five commercially available copolymers: Pluronic\u00ae PE 6400, Pluronic\u00ae L-35, Pluronic\u00ae RPE 1740, Unilube\u00ae 50 MB-26, and Polycerin\u00ae 55GI-2601 as DSs in a laboratory FO setup, with DI water as the feed solution (FS). The water
flux and reverse solute flux varied from 1.5 to 2.0 L\u22c5m\udbc0\udc00 2\u22c5h\udbc0\udc00 1 and from 0.04 to 0.4 g\u22c5m\udbc0\udc00 2\u22c5h\udbc0\udc00 1, respectively.<\/p>\n
Furthermore, all polymer solutions showed the ability to be recovered and reused using temperatures below 100\u25e6C. Therefore, the tested PAGs turned out to be promising as draw solutions for FO systems that utilize low-grade waste heat. The re-usage in FO was shown for regenerated Pluronic\u00ae L-35 through a three-step experiment where its recovery was 91.1 %, 93.1 %, and 91.9 % for each FO cycle, respectively.<\/p>\n
Keywords<\/strong>: Forward osmosis, Draw solution, Osmotic pressure, Polyalkylene glycols, Lower critical, solution temperature, Reuse of polymer.<\/p>\n Authors<\/strong>: Irena Petrinic, Natalija Jancic, Ross D. Jansen van Vuuren, and Hermina Buksek.<\/p>\n [\/et_pb_text][et_pb_image src=”https:\/\/desolination.eu\/wp-content\/uploads\/2024\/06\/poster-MEMDES-2023-Spain_page-0001-scaled.jpg” _builder_version=”4.25.1″ _module_preset=”default” title_text=”poster MEMDES 2023, Spain_page-0001″ hover_enabled=”0″ sticky_enabled=”0″][\/et_pb_image][et_pb_button button_url=”https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S001191642400287X?via%3Dihub” url_new_window=”on” button_text=”Read the publication” _builder_version=”4.25.1″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_button][et_pb_button button_url=”https:\/\/desolination.eu\/wp-content\/uploads\/2024\/05\/2024_UM_Petrinic-et-al_Commercial-thermo-responsive-polyalkylene-glycols-as-draw-agents.pdf” url_new_window=”on” button_text=”Download the publication” _builder_version=”4.25.1″ _module_preset=”default” button_bg_color=”#000000″ global_colors_info=”{}”][\/et_pb_button][et_pb_image src=”https:\/\/desolination.eu\/wp-content\/uploads\/2024\/06\/poster-SKD-2022-Slovenia_page-0001-scaled.jpg” _builder_version=”4.25.1″ _module_preset=”default” title_text=”poster SKD 2022, Slovenia_page-0001″ hover_enabled=”0″ sticky_enabled=”0″][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.25.1″ _module_preset=”default” width=”100%” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.25.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_post_nav prev_text=”Previous publication” next_text=”Next publication” _builder_version=”4.25.1″ _module_preset=”default” title_font_size=”18px” global_colors_info=”{}”][\/et_pb_post_nav][dsm_blog_carousel include_categories=”11″ use_thumbnail=”off” use_excerpt=”off” use_author=”off” use_readmore=”on” _builder_version=”4.25.1″ _module_preset=”default” global_colors_info=”{}”][\/dsm_blog_carousel][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":" Forward osmosis (FO) is a promising technology for efficient water reclamation at low operating costs. It has shown potential in producing fresh water from seawater; however, the regeneration of the diluted draw solution (DS) still holds back further development. Thermo-responsive polymers, especially polyalkylene glycol (PAG) based copolymers with hydrophilic ethylene oxide and hydrophobic propylene oxide units, have shown suitability as DSs in FO using low-temperature waste heat to regenerate the DS. In this study, we explored five commercially available copolymers: Pluronic\u00ae PE 6400, Pluronic\u00ae L-35, Pluronic\u00ae RPE 1740, Unilube\u00ae 50 MB-26, and Polycerin\u00ae 55GI-2601 as DSs in a laboratory FO setup, with DI water as the feed solution (FS). The waterflux and reverse solute flux varied from 1.5 to 2.0 L\u22c5m\udbc0\udc00 2\u22c5h\udbc0\udc00 1 and from 0.04 to 0.4 g\u22c5m\udbc0\udc00 2\u22c5h\udbc0\udc00 1, respectively. Furthermore, all polymer solutions showed the ability to be recovered and reused using temperatures below 100\u25e6C. Therefore, the tested PAGs turned out to be promising as draw solutions for FO systems that utilize low-grade waste heat. The re-usage in FO was shown for regenerated Pluronic\u00ae L-35 through a three-step experiment where its recovery was 91.1 %, 93.1 %, and 91.9 % for each FO cycle, respectively. Keywords: Forward […]<\/p>\n","protected":false},"author":3,"featured_media":9635,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[11,70],"tags":[],"class_list":["post-6473","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publications","category-draw-solution"],"_links":{"self":[{"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/posts\/6473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/comments?post=6473"}],"version-history":[{"count":2,"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/posts\/6473\/revisions"}],"predecessor-version":[{"id":9763,"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/posts\/6473\/revisions\/9763"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/media\/9635"}],"wp:attachment":[{"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/media?parent=6473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/categories?post=6473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/desolination.eu\/da\/wp-json\/wp\/v2\/tags?post=6473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}