Nickel and Zinc Removal from Acid Mine Drainage: Roles of Sludge Surface Area and Neutralising Agents

<table>Acid mine drainage Zn concentration (initial = 4.42 mg L<sup>−1</sup>) and concentration after neutralisation by NaOH, Ca(OH)<sub>2</sub>, and CaCO<sub>3</sub>.</table>

Journal of Mining

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Figure 4

Figure 4: Nickel and Zinc Removal from Acid Mine Drainage: Roles of Sludge Surface Area and Neutralising Agents 