The goal of this study is to ascertain the abilities of different agroforestry wastes as alternative low-cost biosorbents for the removal of wastewater streams containing different metals. First, the adsorption potentials of the agroforestry wastes were investigated. Then, the performance of the combination of the biosorbents were evaluated, and the composition of the mixed biosorbents was optimised using response surface methodology. Isotherms and kinetic data were also obtained. Finally, the adsorption mechanism was studied, and biosorbent recovery was evaluated.