Optimization of Preparation of Activated Carbon from <i>Ricinus communis</i> Leaves by Microwave-Assisted Zinc Chloride Chemical Activation: Competitive Adsorption of Ni<sup>2+</sup> Ions from Aqueous Solution

<table>Effect of pH on the adsorption, desorption, and recycling adsorption of Ni<sup>2+</sup> ion. [Ni] = 1000 mg/L; contact time = 2 h; adsorbent dose = 0.2 g/50 mL.</table>

Journal of Chemistry

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Figure 5

Figure 5: Optimization of Preparation of Activated Carbon from <i>Ricinus communis</i> Leaves by Microwave-Assisted Zinc Chloride Chemical Activation: Competitive Adsorption of Ni<sup>2+</sup> Ions from Aqueous Solution 

Figure 5 | 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 