جداسازی و حذف گزینشی یون‌های فلزات سنگین سمّی از آب به‌وسیله نانوپلیمرهای نقش‌بستی یونی مغناطیسی

نوع مقاله: تالیفی

نویسندگان

دانشگاه صنعتی مالک اشتر

چکیده

یون‌های فلزات سنگین از آلاینده‌های اصلی محیط زیست و آب‌های آشامیدنی هستند که موجب بروز انواع بیماری‌ها در انسان می‌شوند. حذف این یون‌ها از پساب‌های صنایع و آب‌های آشامیدنی از چالش‌های اساسی در زمینه تصفیه آب است. جداسازی مغناطیسی یون به‌وسیله پلیمرهای نقش‌بستی یونی مغناطیسی، از روش‌های بسیار ساده، ارزان و گزینش‌پذیر برای این هدف به شمار می‌رود. در این روش، پس از پوشش‌دهی نانوذرات مغناطیسی با پلیمر، یون مدنظر در سطح آن‌ها نقش می‌بندد. با شویش این یون‌ها، حفره‌هایی با نقش‌بست آن یون ایجاد می‌شود که می‌تواند برای حذف انتخابی یون فلز به‌کار گرفته شود. در این مقاله، روش‌های سنتز پلیمرهای مغناطیسی نقش‌بستی یونی و کاربرد آن‌ها در حذف یون‌های فلزات سنگین مختلف مرور شده است. افزون بر این، اثر نوع گروه‌های عاملی و پارامترهای تجزیه‌ای بر مقدار جذب یون‌‌های فلزی و گزینش‌پذیری پلیمر سنتز شده برای یون مدنظر نیز بررسی شده است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Selective Separation and Removal of Toxic Heavy Metal Ions from Water by Magnetic Ion-imprinted Nano Polymers

نویسنده [English]

  • Hassan Fattahi
چکیده [English]

Heavy metal ions are one of the major living environment and water pollutants that may cause several diseases in humans. Removal of heavy metal ions from industrial wastewaters and drinking water is a serious challenge in industrial wastewater treatment. One of the simplest, cheapest, and most selective methods for removal of heavy metal ions is magnetic separation by magnetic ion-imprinted polymers (MIIPs). In this method, the surface of magnetic nanoparticles is coated by a polymer in order to target ions to imprint on nanoparticle surface. By eluting the imprinted ions, cavities with the exact template of these ions are created that can be used for selective removal of target ions. In this review article, the synthesis methods of magnetic ion-imprinted polymers and their application in removal of heavy metal ions are studied. The effect of different functional groups and analytical parameters on the adsorption capacity and the selectivity of the synthesized polymers for target metal ion are investigated.

کلیدواژه‌ها [English]

  • heavy metal ion
  • environmental pollutant
  • ion-imprinted polymer
  • magnetic iron oxide nanoparticles
  • selective removal
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