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Corresponding Author

Mahmoud H. Mahmoud

Subject Area

Chemical Engineering

Article Type

Original Study

Abstract

The most toxic material to the environment is heavy metals. remove heavy metals from wastewater is done by adsorption. Many papers have been done using different materials to take off toxic dangerous ions from wastewater. Noval Nano-composites material (NNCM)as designated as J1, J2, and J3 the most used adsorbents in this study. To conduct the experiments, synthetic wastewater was generated in the lab. Batch experiments were conducted to create the best conditions for removing these ions from the wastewater. The optimum conditions obtained were 90 min optimum contact time, and pH equal seven, optimal NNCM dose was 0.5 g/L achieving a removal efficiency of lead, zinc, and mercury for J3 were about 95.01, 92.85, and 75.6 respectively at pH equal seven, temperature of 25oC, contact time of 90 min., and initial ion concentration of 25 mg/L.

Adsorption measurements suit the model of Langmuir for measured metals. The obtained R2value indicates in case adsorption of lead ions and zinc ions which the result of experiment shows better fit to pseudo-first order model but in case of adsorption of mercury ions show fit better to pseudo-second order model. The negative values of change in free energy and change in enthalpy shows that it was spontaneously thermodynamic process and endothermic in nature.

Keywords

Noval Nano-composites material (NNCM), Adsorption, removal efficiency, Adsorption Isotherm, Adsorption Kinetics

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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