MgO Nanoparticles for the Removal of Reactive dyes from Wastewater

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The quality of water reservoirs are under threat due to over exploitation and disposal of untreated wastewater. Throughout the world, diverse industrial operations and processes are contaminating all the spheres of environment. Amongst these, textile industry is one that caters the basic needs of clothing for mankind and it needs colossal quantity of water for sizing, bleaching, washing, synthetic dyeing and printing.In textile wastewater, besides other contaminants, unfixed dyes are released that deteriorate the environment. Nanotechnology is an emerging technique for wastewater treatment. The present study introduces magnesium oxide (MgO) as a suitable, effective and economical nano-adsorbent for removal of reactive dyes from textile wastewater. Nanoparticles of MgO, with a crystalline size of 19 nm, were successfully synthesized by co-precipitation method and characterized through FTIR and XRD techniques. The adsorption behavior of the MgO nanoparticles was evaluated in batch set up for the removal of Reactive Black 5 (RB5) and Reactive Orange 122 (RO122) from synthetic dye solution. The adsorption data best fitted to Langmuir and Freundlich isotherms indicating the feasibility of adsorption process for both the dyes.

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Journal: TechConnect Briefs
Volume: 1, Advanced Materials: TechConnect Briefs 2015
Published: June 14, 2015
Pages: 353 - 356
Industry sector: Advanced Materials & Manufacturing
Topics: Nanoparticle Synthesis & Applications
ISBN: 978-1-4987-4727-1