Synthesis and Characterization of Activated Carbon/ZnO Nanocomposite from Water Hyacinth for Heavy Metals Adsorption and its Antimicrobial Activity

Shivakumar Lakshmipurada1,, Kankara Ramakrishna Reddy2,*, and Sureshkumar Sundaravel3,

1Research & Development Centre, Bharathiar University, Coimbatore-641046, India

2Government Science College (Autonomous), Bangalore-560001, India

3Department of Chemistry, Rajalakshmi Engineering College, Chennai-600010, India

*Corresponding author: E-mail:


In present work, the activated carbon was prepared from water hyacinth (Eichhornia crassipes) and ZnO nanoparticles synthesized by chemical process. Nanocomposites were formed using activated carbon and ZnO nanoparticles to get improved electrostatic interactions for the successful adsorption of heavy metal ions such as nickel, cadmium, lead and chromium from aqueous solution. The prepared nanocomposites were further characterized using XRD, SEM and EDAX techniques. The heavy metal ions removal efficacy was evaluated through ICP-OES. The result showed that the prepared nanocomposite efficiently adsorbed 76.75-92.40% nickel, 75.80-92.25% cadmium, 86.25-96.30% lead and 76.37-95.26% chromium. Nanocomposites showed a significant antimicrobial activity against Streptococci and B. subtilis.


Water hyacinth, ZnO/Activated carbon, Waste water effluent, adsorption, Heavy metals, Antimicrobial.

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