REMOVAL OF Cd(II) FROM AQUEOUS SOLUTIONS BY CRUMPLED GRAPHITE OXIDE

Ha Xuan Son

Abstract


In this study, crumpled graphite oxides (CGOs) were fabricated from graphite electrode of exhausted dry batteries (RG) by cathodic plasma electrolysis method (CPE) and applied for removing Cd(II) from aqueous solutions. The effects of pH, contact time, and initial concentrations on the removal of Cd(II) ions were studied. A removal efficiency of ∼98 % was obtained after 120 min, via the dispersion of 15 mg of CGO in Cd(II) solutions (40 mL, 1 ppm) at pH 6. The maximum adsorption capacity (qmax) was calculated to be 40.82 mg/g. Results showed that CGO is an effective adsorbent for the removal of Cd(II) from aqueous environment and acts as a promising adsorbent for the removal of other heavy metals from the polluted water.


Keywords


adsorption; cadmium, graphite oxides, plasma electrolysis.

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DOI: https://doi.org/10.15625/2525-2518/55/4C/12122 Display counter: Abstract : 159 views. PDF : 84 views.

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Published by Vietnam Academy of Science and Technology