{"id":20641,"date":"2019-10-24T13:35:09","date_gmt":"2019-10-24T13:35:09","guid":{"rendered":"https:\/\/services.jacobi.net\/nickel-removal-from-water-with-ion-exchange-resins\/"},"modified":"2025-09-19T03:30:37","modified_gmt":"2025-09-19T03:30:37","slug":"nickel-avlagsnande-fran-vatten-med-jonbyte-hartser","status":"publish","type":"post","link":"https:\/\/services.jacobi.net\/sv\/nickel-avlagsnande-fran-vatten-med-jonbyte-hartser\/","title":{"rendered":"Nickel (Ni\u00b2\u207a) borttagning fr\u00e5n vatten med hj\u00e4lp av kelatiska resin."},"content":{"rendered":"\t\t
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Var kommer nickel ifr\u00e5n?<\/h3>

Ren nickel (Ni) \u00e4r en silvrig vit metall som s\u00e4llan finns som en ren metall i jordskorpan eftersom den kommer att oxidera n\u00e4r den kommer i kontakt med syre. Rent nickel finns i inre delar av st\u00f6rre nickel-j\u00e4rnmeteoriter som inte utsattes f\u00f6r syre utanf\u00f6r jordens atmosf\u00e4r eller i ultramafiska bergarter.<\/p>

Nickel bryts huvudsakligen fr\u00e5n tv\u00e5 grupper av malmfyndigheter. Den f\u00f6rsta gruppen malmavlagringar \u00e4r lateriterna s\u00e5som limonit (Fe, Ni) O (OH), en nickelbaserad blandning eller garnierit, en blandning av olika nickelrika silikater och vattenhaltigt nickel. Den andra gruppen \u00e4r sulfidmalmer d\u00e4r det huvudsakliga malmmineralet \u00e4r pentlandit [(FeNi) 9S8].<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Tabell 1: Vanliga nickelmalmer<\/em><\/p>

Lateriter<\/strong><\/p><\/td>

Sulfidmalmer<\/strong><\/p><\/td><\/tr>

Limonit\u00a0<\/strong><\/p><\/td>

Garnierit\u00a0<\/strong><\/p><\/td>

Pentlandit\u00a0<\/strong><\/p><\/td><\/tr>

\"\"<\/td>\"\"<\/td>\"\"<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Nickelmetall reagerar inte med luftens syre under omgivande f\u00f6rh\u00e5llanden. Nickelmetall anv\u00e4nds fr\u00e4mst f\u00f6r produktion av rostfritt st\u00e5l och nickellegeringar. Den vanligaste nickelkatjonen \u00e4r Ni 2+, men andra oxidationstillst\u00e5nd f\u00f6r nickel s\u00e5som Ni\u00b3+, Ni 4+ produceras ocks\u00e5 f\u00f6r olika till\u00e4mpningar.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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I vilken form finns nickel i grundvatten?<\/h3>

Pourbaix- eller potential \/ pH-diagrammet i figur 1 av nickel visar nickelspeciet i vatten. Omr\u00e5det mellan de orange prickade linjerna representerar stabilitetszonen f\u00f6r vatten. Diagrammet visar att nickelspeciet i vatten domineras av dess katjoniska element\u00e4ra Ni\u00b2-form.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Figur 1 Diagram Pourbaix eller potential \/ pH f\u00f6r nickelspecier<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Nickelkoncentrationen (Ni\u00b2?) i naturligt vatten \u00e4r vanligtvis under 20 ppb (\u00b5g \/ l), men ett f\u00f6rorenat omr\u00e5de kan inneh\u00e5lla grundvatten med en koncentration som \u00f6verskrider V\u00e4rldsh\u00e4lsoorganisationens (WHO) riktlinje p\u00e5 70 ppm (\u00b5g \/ l).<\/p>

Hur avl\u00e4gsnas nickel fr\u00e5n grundvattnet?<\/h3>

Den katjoniska element\u00e4ra formen av nickel (Ni 2+) kan effektivt f\u00e5ngas upp och avl\u00e4gsnas fr\u00e5n grundvatten med anv\u00e4ndning av ett selektivt kelateringsharts med en svag syrakatjon med en imino di-karboxylsyra grupp, s\u00e5som Resinex\u2122 CH-23.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Figur 2: Ett selektivt kelatiskt resin med en imino di-karboxylsyra grupp<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Nickel-resin\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Den genomsnittliga borttagningskapaciteten f\u00f6r katjoniskt nickel (Ni 2+) f\u00f6r Resinex\u2122 CH-23 \u00e4r 20 g Ni 2+ per liter resin men beror p\u00e5 vattnets sammans\u00e4ttning. Ofta inneh\u00e5ller vattnet andra katjoner som kommer att bidra till filterb\u00e4ddens m\u00e4ttnad; d\u00e4rf\u00f6r rekommenderas det alltid att du kontaktar v\u00e5ra tekniska experter f\u00f6r design av ett borttagningssystem f\u00f6r tungmetaller eftersom andra metallerjoner ocks\u00e5 p\u00e5verkar den uppskattade f\u00f6rbrukningen.<\/p>

Resinex\u2122 CH-23 \u00e4r ett kelatiskt resin som ocks\u00e5 effektivt avl\u00e4gsnar andra tungmetallkatjoner s\u00e5som kadmium (Cd\u00b2+), koppar (Cu\u00b2+), bly (Pb\u00b2+), vanadium (Va\u00b2+) och zink (Zn\u00b2+) i deras element\u00e4ra katjoniska form.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Rekommenderade driftsf\u00f6rh\u00e5llanden f\u00f6r borttagning av nickel (Ni\u00b2?)<\/h3>

Valet av driftsf\u00f6rh\u00e5llanden f\u00f6r ett nickelborttagningssystem beror p\u00e5:<\/p>

  • Minsta kontakttid som applikationen kr\u00e4ver<\/li>
  • Andra katjoniska specier i vattnet<\/li>
  • \u00d6nskad filter livsl\u00e4ngd<\/li>
  • Driftsf\u00f6rh\u00e5llanden (kontinuerligt, diskontinuerligt)<\/li><\/ul>

    Ett AquaFlow\u2122 filter kan anv\u00e4ndas f\u00f6r avl\u00e4gsnande av nickel (Ni\u00b2?) vid en kontakttid p\u00e5 minst sex minuter, men vanligtvis anv\u00e4nds tv\u00e5 AquaFlow\u2122 i serie, med en typisk fl\u00f6deshastighet per filter om : 10-20BV \/ h.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Hur man ber\u00e4knar borttagning av nickel (Ni\u00b2?) fr\u00e5n grundvatten<\/h3>

    Anta ett f\u00f6rorenat grundvatten med 0,3mg\/l nickel (Ni\u00b2?) som m\u00e5ste renas med f\u00f6ljande egenskaper:<\/p>

    • Genomsnittligt fl\u00f6de p\u00e5 30 m\u00b3 \/ h<\/li>
    • Kontinuerlig drift 24\/7<\/li><\/ul>

      Den \u00e5rliga nickelkapaciteten (Ni\u00b2+) ber\u00e4knas sedan enligt f\u00f6ljande:<\/p>

      • Nickel koncentration: 0.3mg\/l = 0.3g\/m\u00b3<\/li>
      • \u00c5rligen med nickel (Ni\u00b2+ volym) f\u00f6rorenad grundvattenvolym: 30 m\u00b3 \/ h x 8 600 hpa = 258 000 m\u00b3<\/li>
      • Den \u00e5rliga kapaciteten f\u00f6r nickel (Ni\u00b2?): 3g \/ m\u00b3 x 258.000 m\u00b3 = 77.400 g = 77.4 kg Ni\u00b2+<\/li><\/ul>

        Detta ger en genomsnittlig kapacitet p\u00e5 20 kg Ni\u00b2 \/ m\u00b3 Resinex\u2122 CH-23 en f\u00f6rbrukning p\u00e5 cirka 4 m\u00b3 per \u00e5r. Ett AquaFlow\u2122 \u2013 mobila filter kan v\u00e4ljas fr\u00e5n f\u00f6r att erh\u00e5lla \u00f6nskad bytesfrekvens.<\/p>

        Det rekommenderas alltid att du kontaktar v\u00e5r tekniska expert f\u00f6r design av ett system f\u00f6r borttagning av tungmetaller eftersom andra metalljoner kan st\u00f6ra den ber\u00e4knade f\u00f6rbrukningen.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

        Var kommer nickel ifr\u00e5n? Ren nickel (Ni) \u00e4r en silvrig vit metall som s\u00e4llan finns som en ren metall i jordskorpan eftersom den kommer att oxidera n\u00e4r den kommer i kontakt med syre. Rent nickel finns i inre delar av st\u00f6rre nickel-j\u00e4rnmeteoriter som inte utsattes f\u00f6r syre utanf\u00f6r jordens atmosf\u00e4r eller i ultramafiska bergarter. Nickel…<\/p>\n","protected":false},"author":32,"featured_media":39418,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3708],"tags":[],"class_list":["post-20641","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vattenbehandling-sv"],"acf":[],"yoast_head":"\nNickel (Ni\u00b2\u207a) borttagning fr\u00e5n vatten med hj\u00e4lp av kelatiska resin. | Jacobi Services<\/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:\/\/services.jacobi.net\/sv\/nickel-avlagsnande-fran-vatten-med-jonbyte-hartser\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nickel (Ni\u00b2\u207a) borttagning fr\u00e5n vatten med hj\u00e4lp av kelatiska resin.\" 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