ADSORPTION OF ARSENIC (V) ONTO METAL LOADED CELLULOSE NANOCOMPOSITE BEAD (MCNB)-ISOTHERM AND THERMODYNAMIC STUDY

Dhiman Santra Santra, Rubi Ghosh Ghosh, Mridula Das Das, Parshati Majumdar Majumdar, Mitali Sarkar Sarkar

Abstract


Metal loaded cellulose nanocomposite bead, batch study, arsenic adsorption, isotherm, water analysis

Cellulose nanocomposite bead modified with metal (MCNB) such as Ce, Al and Fe is synthesized for selective adsorption of arsenate anions As(V) from drinking water in batch system. The adsorbent was characterized by FTIR, FESEM, EDS and EPR studies. In the present report arsenic (v) adsorption performance on cerium modified cellulose bead was described. The maximum adsorption of As(V) is near about 100 percent up to an initial arsenic load of 5.0 mg L-1 at the acidic pH of 3.0 and the equilibrium reached in 5hr. The much higher adsorption extent and quick equilibrium time compared to the other reported adsorbents makes the present one as efficient one. Among the three adsorption isotherm models used, Langmuir model fitted the experimental data best and the adsorption is found to be exothermic, spontaneous and random in nature. The process was applied for removal of arsenic from some real sample.


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DOI: http://dx.doi.org/10.17628/ecb.2014.3.692-698

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