Fig. 11
A bar chart with the standard error represents sorption-desorption cycles of the adsorbed Cu(II) onto \(\:\text{P}\text{m}\text{A}\text{P}/\text{A}\text{P}\text{T}\text{E}\text{S}{/\text{G}\text{O}}_{\left(6.6\right)}\). [Cu(II)]o =150 mg/L, adsorbent dosage 0.01 g, pH = 7, and stirring speed 120 rpm.
