Production of Cellulose Nanocrystalline Additive Alginate Adsorbent for the Removal of Organic Dyes from Aqueous Solutions and Investigation of Dye Removal Efficiency

Year 2022, Volume: 10 Issue: 1, 300 - 308, 31.01.2022

Çiğdem Balçık , Bahar Özbey Ünal

https://doi.org/10.29130/dubited.801179

Cited By: 2

Abstract

Considering increasing water demand with rapid population growth and industrialization and the damage caused by wastewater to water resources, it is of great importance to treat industrial wastewater before discharge. The textile industry with high water consumption and dye concentration is one of these industrial wastewaters. Various physical, chemical, and biological treatment methods are used to treat dyes from wastewater. Among these methods, the easiest and most efficient method in terms of both operation and performance is known as adsorption. However, since the production and regeneration of the adsorbent requires high cost and energy, it is of great importance to develop alternative low-cost adsorbents based on sustainable materials in the adsorption process. In this study, the production of an innovative and environmentally friendly cellulose nanocrystal (CNC) blended with alginate adsorbent and its use in methylene blue removal were investigated. For this purpose, batch adsorption experiments at different adsorbent concentrations and different dye concentrations were performed to determine the methylene blue removal performance of CNC-added alginate beads. The highest methylene blue removal efficiency was found to be 35% with the study performed under 100 mg/L dye concentration and 0.5 g adsorbent/50 mL dye solution. In addition, a series of adsorption-desorption studies were carried out to investigate the reusability of the adsorbent and the regeneration of the adsorbent was investigated.

Keywords

Dye Removal, Adsorbent, Cellulose Nanocrstyal, Alginat

Sulu Çözeltilerden Organik Boyaların Giderimi İçin Selüloz Nanokristal Katkılı Aljinat Adsorbanın Üretilmesi ve Boya Giderim Veriminin Araştırılması

Abstract

Hızlı nüfus artışı ve endüstriyelleşme ile her geçen gün artan su ihtiyacı ve atıksuların su kaynaklarına verdiği zararlar göz önüne alındığında, özellikle endüstriyel atıksuların deşarj öncesi arıtılması büyük önem taşımaktadır. Bu endüstriyel atıksuların başında yüksek su tüketimi ve boyar madde konsantrasyonu ile tekstil endüstrisi gelmektedir. Boyar maddelerin atıksulardan uzaklaştırılması için çeşitli fiziksel, kimyasal ve biyolojik arıtma yöntemleri kullanılmaktadır. Bu yöntemler arasında hem işletme hem performans açısından en kolay ve verimli yöntem adsorpsiyon olarak bilinmektedir. Ancak adsorbanın üretilmesi ve rejenerasyonu, yüksek maliyet ve enerji gerektirdiğinden, adsorpsiyon prosesinde sürdürülebilir malzemeye dayalı alternatif düşük maliyetli adsorbanların geliştirilmesi büyük önem taşımaktadır. Bu çalışmada yenilikçi ve çevre dostu selüloz nanokristal (SNK) katkılı aljinat adsorbanının üretilmesi ve metilen mavisi gideriminde kullanılması araştırılmıştır. Bu amaçla SNK katkılı aljinat bilyelerin metilen mavisi giderim performansının belirlenmesi için farklı adsorban konsantrasyonu ve farklı boyar madde konsantrasyonlarında kesikli adsorpsiyon deneyleri gerçekleştirilmiştir. En yüksek metilen mavisi giderim verimi, 100 mg/L boyar madde konsantrasyonu ve 0,5 g adsorban/50 mL boyar madde çözeltisi şartlarında gerçekleştirilen çalışma ile %35 olarak bulunmuştur. Ayrıca üretilen adsorbanın yeniden kullanılabilirliğinin araştırılması için bir seri adsorpsiyon-desorpsiyon çalışması gerçekleştirilmiş ve adsorbanın rejenerasyonu incelenmiştir.

Keywords

Boya Giderimi, Adsorban, Selüloz Nanokristal, Aljinat

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