Özgecan MADENLİ, Ece Ümmü DEVECİ, Çağdaş GÖNEN

Ağır Metal Gideriminde Grafen Uygulamaları: Adsorpsiyon Teknolojisi

Dünyada artan nüfus ile endüstrilerde aşırı üretim ve tüketim doğmuştur. Bu durum endüstriyelleşmenin hızla gelişmesine ve beraberinde endüstriyel atıksuların içeriklerinin değişmesine neden olmaktadır. Endüstriyel üretimler sırasında toksik madde içerikli atık su oluşmakta ve bu suların doğaya verilmesi ekosistem için ciddi bir tehdit oluşturmaktadır. Bu amaçla verimli bir şekilde atıksuların geri kazanılması veya doğayı tehdit etmeyecek şekilde arıtılarak deşarj edilmesi oldukça önemlidir. Grafen nanomalzemesinin yüksek iletkenlik ve geniş yüzey alanına sahip olması gibi çeşitli fiziksel ve kimyasal özelliklerinden dolayı farklı materyallerle işlevselleştirilerek nanokompozit ve biyo-nanokompozit adsorbanlar sentezlenmeye başlanmıştır. Endüstriyel atıksulardan ağır metal giderimi üzerine yapılan araştırmalarda karbon bazlı nanomalzeme olan grafen ve türevlerinin kullanılması son zamanlarda çok dikkat çekmektedir. Grafen bilim dünyasında göstermiş olduğu fark edici özelliklerini adsorpsiyonda da göstermektedir. Grafen bazlı oluşturulan kompozit yapılar; hem fungus gibi mikroorganizmalarla oluşturulan biyokompozit yapılı adsorbanlar hem de Fe, Fe3O4, EDTA ve PVP gibi kimyasallar ile oluşturulan kompozit yapılı adsorbanlar diğer adsorbanlarla karşılaştırıldığında verimli bir şekilde ayrıcalık göstermektedir. Bu makalede son yıllarda dikkat çekici özellikleri ile ilgi odağı haline gelmiş grafenin, adsorpsiyon teknolojisindeki uygulama çalışmaları incelerek literatürde yer alan nanokompozit adsorbanların adsorpsiyon kapasiteleri değerlendirilmiştir.

Graphene Applications in Heavy Metal Removal: Adsorption Technology

Increasing population demands in the world have caused overproduction and consumption in industries. This situation causes the rapid development of industrialization and the change of the contents of industrial wastewater. Wastewater containing toxic substances is generated during industrial production and the discharge of these waters into nature poses a serious threat to the ecosystem. For this purpose, it is very important to efficiently recycle wastewater or to be treated and discharged in a way that does not threaten the nature. Due to the various physical and chemical properties of graphene nanomaterial, such as its high conductivity and large surface area, it has been functionalized with different materials and nanocomposite and bio-nanocomposite adsorbents have been synthesized. The use of graphene and its derivatives in studies on heavy metal removal from industrial wastewater has recently attracted much attention. Graphene also shows its distinctive properties in the scientific world in adsorption. Graphene-based composite structures; both biocomposite adsorbents formed by microorganisms such as fungi and composite adsorbents formed with chemicals such as Fe, Fe3O4, EDTA and PVP are efficiently distinguished compared to other adsorbents. In this article, the application studies of graphene in adsorption technology are examined and the adsorption capacities of nanocomposite adsorbents in the literature are evaluated.

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