Optimization of Preparation of Activated Carbon from Ricinus communis Leaves by Microwave-Assisted Zinc Chloride Chemical Activation: Competitive Adsorption of Ni2+ Ions from Aqueous Solution

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left">Ion</td><td align="center">Ionic radius (pm)</td><td align="center">Electronegativity (Pauling scale)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left">Ni2+</td><td align="center">83</td><td align="center">1.75 </td></tr><tr><td align="left">Cu2+</td><td align="center">73</td><td align="center">1.90 </td></tr><tr><td align="left">Cr3+</td><td align="center">75.5</td><td align="center">1.66 </td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Electronegativities and ionic radius of Ni2+, Cu2+, and Cr3+ ions.

Journal of Chemistry

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Table 3

Table 3: Optimization of Preparation of Activated Carbon from Ricinus communis Leaves by Microwave-Assisted Zinc Chloride Chemical Activation: Competitive Adsorption of Ni2+ Ions from Aqueous Solution

Table 3 | Optimization of Preparation of Activated Carbon from Ricinus communis Leaves by Microwave-Assisted Zinc Chloride Chemical Activation: Competitive Adsorption of Ni2+ Ions from Aqueous Solution 