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Nanotechnology

Nanoparticles Show Promise in Removing and Degradating Wastewater Pollutants

Strategic Insights

— 1 min read

New research conducted by scientists at the University of Sao Paulo has demonstrated the potential of a novel, biodegradable superabsorbent polymer (SAP) hydrogel composite in efficiently removing and degrading methylene blue (MB) dye from wastewater. The composite, which incorporates activated charcoal (AC) and TiO2 nanoparticles, has shown remarkable adsorption and photocatalytic activity in treating water pollution.

Key Takeaways:

  • The novel SAP composite hydrogel was found to have a high adsorption capacity, with 198.99 mg g for SAP-TiO and 203.97 mg g for SAP-AC/TiO after 24 hours of adsorption.
  • The integration of TiO2 nanoparticles increased the photocatalytic activity of the composite hydrogel, with maximum MB degradation percentages under UV-A irradiation reaching 77.11 ± 1.9 using SAP-TiO and 87.77 ± 2.9 using SAP-AC/TiO.
  • The research demonstrated the potential of the SAP composite hydrogel in efficiently removing and degrading MB dye from wastewater, with promising applications in wastewater treatment.
  • The study's authors, Bruno Ramos et al., concluded that the SAP composite hydrogel is a promising material for removing and degrading pollutants in wastewater.
  • The research was published in ACS Omega, a peer-reviewed journal published by the American Chemical Society, and is available online at [DOI: 10.1021/acsomega.5b02431](https://dx.doi.org/10.1021/acsomega.5b02431).
  • The study's findings have significant implications for the development of sustainable and effective wastewater treatment technologies.

Statistics:

  • 198.99 mg g: adsorption capacity of SAP-TiO after 24 hours of adsorption
  • 203.97 mg g: adsorption capacity of SAP-AC/TiO after 24 hours of adsorption
  • 77.11 ± 1.9: maximum MB degradation percentage under UV-A irradiation using SAP-TiO
  • 87.77 ± 2.9: maximum MB degradation percentage under UV-A irradiation using SAP-AC/TiO

Sources:

  • Deep Removal and Photodegradation of Methylene Blue Dye Using Superabsorbent Polymer Hydrogel Composite with Activated Charcoal and TiO2 Nanoparticles. ACS Omega, 2025;10(25):26441-26457.
  • NewsRx. University of Sao Paulo Reports Findings in Nanoparticles (Deep Removal and Photodegradation of Methylene Blue Dye Using Superabsorbent Polymer Hydrogel Composite with Activated Charcoal and TiO2 Nanoparticles). Nanotechnology Weekly. July 21, 2025; p 4437.

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