Valorization of Wasted Black Tea as a Low-Cost Adsorbent for Nickel and Zinc Removal from Aqueous Solution

<div>Percentage of Ni<sup>2+</sup> (■) and Zn<sup>2+</sup> (▲) ions removal with varying pH in binary metal sorption.</div>

Journal of Chemistry

Figure 7: Valorization of Wasted Black Tea as a Low-Cost Adsorbent for Nickel and Zinc Removal from Aqueous Solution 