{"id":3865,"date":"2015-02-12T18:27:30","date_gmt":"2015-02-12T17:27:30","guid":{"rendered":"https:\/\/aquihayquimica.iqs.edu\/2015\/02\/12\/quimica-que-da-agua\/"},"modified":"2019-11-12T16:09:44","modified_gmt":"2019-11-12T15:09:44","slug":"quimica-que-dona-aigua","status":"publish","type":"post","link":"https:\/\/aquihayquimica.iqs.edu\/ca\/2015\/02\/12\/quimica-que-dona-aigua\/","title":{"rendered":"Qu\u00edmica que d\u00f3na aigua"},"content":{"rendered":"<p><p class=\"p1\">Nivells d\u2019aigu\u0308es subterr\u00e0nies en descens,\u00a0lleres de rius secs, embassaments buits,\u00a0contaminaci\u00f3, malbaratament\u2026 L\u2019escassetat\u00a0d\u2019aigua potable ja no \u00e9s nom\u00e9s\u00a0un problema en pa\u00efsos propensos a la\u00a0sequera. Cada vegada s\u00f3n m\u00e9s els llocs\u00a0industrialitzats on el consum d\u2019aigua est\u00e0\u00a0augmentant m\u00e9s r\u00e0pidament del que els\u00a0recursos disponibles poden subministrar.\u00a0L\u2019aigua \u00e9s una qu\u0308esti. de seguretat i tamb\u00e9\u00a0motor econ\u00f2mic. D\u2019on trauran les ciutats\u00a0l\u2019aigua per beure, cuinar, rentar-nos i\u00a0mantenir la higiene d\u2019aqu\u00ed a cinquanta o\u00a0cent anys? Conjuntament amb la sensibilitzaci\u00f3\u00a0ciutadana i mesures puntuals, es\u00a0necessiten solucions globals i sostenibles\u00a0per abordar el problema.<\/p>\n<p class=\"p1\">Els mars i oceans s\u00f3n les majors reserves\u00a0d\u2019aigua a la Terra. Durant d\u00e8cades, la\u00a0destil\u00b7laci\u00f3 t\u00e8rmica d\u2019aigua salada s\u2019ha fet\u00a0servir per mantenir el subministrament en\u00a0zones costaneres independentment de les\u00a0condicions clim\u00e0tiques; per\u00f2 a costa d\u2019un\u00a0elevat cost energ\u00e8tic. La tecnologia actual\u00a0combina la neteja inicial de l\u2019aigua de mar\u00a0per ultrafiltraci\u00f3 amb l\u2019eliminaci\u00f3 real de\u00a0sals mitjan\u00e7ant osmosi inversa. Aquesta\u00a0combinaci\u00f3 ha perm\u00e8s la reducci\u00f3 de\u00a0costos i ha convertir la dessalinitzaci\u00f3 de\u00a0l\u2019aigua marina en una soluci\u00f3 atractiva\u00a0i efica\u00e7.<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nivells d\u2019aigu\u0308es subterr\u00e0nies en descens,\u00a0lleres de rius secs, embassaments buits,\u00a0contaminaci\u00f3, malbaratament\u2026 L\u2019escassetat\u00a0d\u2019aigua potable ja no \u00e9s nom\u00e9s\u00a0un problema en pa\u00efsos propensos a la\u00a0sequera. Cada vegada s\u00f3n m\u00e9s els llocs\u00a0industrialitzats on el consum d\u2019aigua est\u00e0\u00a0augmentant m\u00e9s r\u00e0pidament del que els\u00a0recursos disponibles poden subministrar.\u00a0L\u2019aigua \u00e9s una qu\u0308esti. de seguretat i tamb\u00e9\u00a0motor econ\u00f2mic. D\u2019on trauran les ciutats\u00a0l\u2019aigua per [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[37],"tags":[],"_links":{"self":[{"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/posts\/3865"}],"collection":[{"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/comments?post=3865"}],"version-history":[{"count":2,"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/posts\/3865\/revisions"}],"predecessor-version":[{"id":6429,"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/posts\/3865\/revisions\/6429"}],"wp:attachment":[{"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/media?parent=3865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/categories?post=3865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aquihayquimica.iqs.edu\/ca\/wp-json\/wp\/v2\/tags?post=3865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}