5 years ago

Using recyclable magnetic carbon nanotube to remove micropollutants from aqueous solutions

Using recyclable magnetic carbon nanotube to remove micropollutants from aqueous solutions
Magnetic carbon nanotubes (MCNs) were synthesized using a new hydrothermal method. The new developed MCNs were evaluated for removal of Metolachlor, Bisphenol-A, Tonalide, Triclosan, Ketoprofen and Estriol from aqueous solutions. Using response surface methodology, a predicting removal model was developed based on solution pH, contact time, adsorbate concentration and adsorbent dose. Experimental results showed high agreement with the predicted ones at optimum conditions. In addition, experimental results were modeled by Freundlich and Langmuir isotherms, which directed a better fit to the Langmuir isotherm. MCN presented good adsorption capacity in which Bisphenol-A, Ketoprofen and Tonalide were the most effectively removed micropollutants, with 98, 96 and 96% removal within 47min, respectively. Thermodynamic studies showed that the adsorption process was endothermic and spontaneous for the micropollutants. Adsorbate regeneration studies were done with methanol, ethanol, HCl, NaOH and hydrogen peroxide in five regenerating cycles. Methanol had the highest level of adsorbent recovery. MCN can be used as a sustainable adsorbent for adsorption of the studied micropollutants.

Publisher URL: www.sciencedirect.com/science

DOI: S0167732217343982

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.