Rapid decolorization of textile wastewater by green synthesized iron nanoparticles


Ozkan Z. , Cakirgoz M., Kaymak E. S. , Erdim E.

WATER SCIENCE AND TECHNOLOGY, cilt.77, sa.2, ss.511-517, 2018 (SCI İndekslerine Giren Dergi) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 77 Konu: 2
  • Basım Tarihi: 2018
  • Doi Numarası: 10.2166/wst.2017.559
  • Dergi Adı: WATER SCIENCE AND TECHNOLOGY
  • Sayfa Sayıları: ss.511-517

Özet

The effectiveness of green tea (Camellia sinensis) and pomegranate (Punica granatum) extracts for the production of iron nanoparticles and their application for color removal from a textile industry wastewater was investigated. Polyphenols in extracts act as reducing agents for iron ions in aqueous solutions, forming iron nanoparticles. Pomegranate extract was found to have almost a 10-fold higher polyphenolic content than the same amount of green tea extract on a mass basis. However, the size of the synthesized nanoparticles did not show a correlation with the polyphenolic content. 100 ppm and 300 ppm of iron nanoparticles were evaluated in terms of color removal efficiency from a real textile wastewater sample. 300 ppm of pomegranate nanoscale zero-valent iron particles showed more than 95% color removal and almost 80% dissolved organic carbon removal. The degradation mechanisms are is considered to be adsorption and precipitation to a major extent, and mineralization to a minor extent.